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SCOP hierarchy

Search the SCOP hierarchy:
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Root:   SCOP 1.75 Hierarchy in SUPERFAMILY [ 0]
Class Folds Superfamilies Families
All alpha proteins [ 46456] 284 507 871
All beta proteins [ 48724] 174 354 742
Alpha and beta proteins (a/b) [ 51349] 147 244 803
Alpha and beta proteins (a+b) [ 53931] 376 552 1055
Multi-domain proteins (alpha and beta) [ 56572] 66 66 89
Membrane and cell surface proteins and peptides [ 56835] 58 110 123
Small proteins [ 56992] 90 129 219
Coiled coil proteins [ 57942] 7 58 62
Totals 1202 2020 3964

All superfamilies in alphabetic order (A to Z Index)

A

SuperfamilyDescription [Sunid] (#Children)
Prefixed with A   alpha/beta-Hydrolases [ 53474]  (41)
  ARM repeat [ 48371]  (23)
  ACT-like [ 55021]  (14)
  Actin-like ATPase domain [ 53067]  (14)
  Acyl-CoA N-acyltransferases (Nat) [ 55729]  (10)
  Aldolase [ 51569]  (8)
  Antimicrobial beta-hairpin [ 58252]  (8)
  alpha/beta knot [ 75217]  (8)
  ADP-ribosylation [ 56399]  (7)
  Adenine nucleotide alpha hydrolases-like [ 52402]  (6)
  Alkaline phosphatase-like [ 53649]  (5)
  Alpha-L RNA-binding motif [ 55174]  (5)
  Aminoacid dehydrogenase-like, N-terminal domain [ 53223]  (5)
  Antimicrobial helix [ 58269]  (5)
  Arabinanase/levansucrase/invertase [ 75005]  (5)
  ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase [ 55874]  (4)
  AhpD-like [ 69118]  (4)
  all-alpha NTP pyrophosphatases [ 101386]  (4)
  A virus capsid protein alpha-helical domain [ 48345]  (3)
  ACP-like [ 47336]  (3)
  ADC-like [ 50692]  (3)
  AF0104/ALDC/Ptd012-like [ 117856]  (3)
  AbrB/MazE/MraZ-like [ 89447]  (3)
  Acid phosphatase/Vanadium-dependent haloperoxidase [ 48317]  (3)
  Acid proteases [ 50630]  (3)
  AF2212/PG0164-like [ 141694]  (2)
  ALDH-like [ 53720]  (2)
  Actin depolymerizing proteins [ 55753]  (2)
  Actin-crosslinking proteins [ 50405]  (2)
  Activating enzymes of the ubiquitin-like proteins [ 69572]  (2)
  Acyl-CoA dehydrogenase C-terminal domain-like [ 47203]  (2)
  Acyl-CoA dehydrogenase NM domain-like [ 56645]  (2)
  Acylphosphatase/BLUF domain-like [ 54975]  (2)
  Aerolisin/ETX pore-forming domain [ 56973]  (2)
  Alanine racemase C-terminal domain-like [ 50621]  (2)
  AlbA-like [ 82704]  (2)
  An anticodon-binding domain of class I aminoacyl-tRNA synthetases [ 48163]  (2)
  ApbE-like [ 143631]  (2)
  AraD/HMP-PK domain-like [ 53639]  (2)
  ArfGap/RecO-like zinc finger [ 57863]  (2)
  Arginase/deacetylase [ 52768]  (2)
  alpha-catenin/vinculin-like [ 47220]  (2)
  alpha-helical ferredoxin [ 46548]  (2)
  A DNA-binding domain in eukaryotic transcription factors [ 47454]  (1)
  A heparin-binding domain [ 56491]  (1)
  A middle domain of Talin 1 [ 109880]  (1)
  ABC transporter involved in vitamin B12 uptake, BtuC [ 81345]  (1)
  ABC transporter transmembrane region [ 90123]  (1)
  ADC synthase [ 56322]  (1)
  ADP-ribosylglycohydrolase [ 101478]  (1)
  AF0625-like [ 142535]  (1)
  AF0941-like [ 140726]  (1)
  AF1104-like [ 111321]  (1)
  AF1531-like [ 160975]  (1)
  AF1782-like [ 158372]  (1)
  AF1862-like [ 158568]  (1)
  AF2331-like [ 143995]  (1)
  AFP III-like domain [ 51269]  (1)
  AGR C 984p-like [ 158837]  (1)
  AMMECR1-like [ 143447]  (1)
  AMPKBI-like [ 160219]  (1)
  AN1-like Zinc finger [ 118310]  (1)
  ARID-like [ 46774]  (1)
  ASF1-like [ 101546]  (1)
  ATP synthase [ 58141]  (1)
  ATP synthase (F1-ATPase), gamma subunit [ 52943]  (1)
  ATP synthase B chain-like [ 161060]  (1)
  ATP synthase D chain-like [ 161065]  (1)
  ATP synthase beta chain, mitochondrial prepeptide [ 103737]  (1)
  ATP-dependent DNA ligase DNA-binding domain [ 117018]  (1)
  ATP12-like [ 160909]  (1)
  AXH domain [ 102031]  (1)
  AbfB domain [ 110221]  (1)
  Accessory protein X4 (ORF8, ORF7a) [ 117066]  (1)
  Acetamidase/Formamidase-like [ 141130]  (1)
  Acetoacetate decarboxylase-like [ 160104]  (1)
  Acetyl-CoA synthetase-like [ 56801]  (1)
  Acetylcholine receptor fragment (residues alpha 67-76) [ 58615]  (1)
  Aconitase B, N-terminal domain [ 74778]  (1)
  Aconitase iron-sulfur domain [ 53732]  (1)
  Actin-binding peptides [ 70018]  (1)
  Actinoxanthin-like [ 49319]  (1)
  Activator of Hsp90 ATPase, Aha1 [ 103111]  (1)
  Acyl-CoA binding protein [ 47027]  (1)
  Ada DNA repair protein, N-terminal domain (N-Ada 10) [ 57884]  (1)
  Adenylylcyclase toxin (the edema factor) [ 81298]  (1)
  Adhesin YadA, collagen-binding domain [ 101967]  (1)
  Adsorption protein p2 [ 89428]  (1)
  Agglutinin [ 50382]  (1)
  Agglutinin HPA-like [ 141086]  (1)
  Agouti-related protein [ 57055]  (1)
  Aldehyde ferredoxin oxidoreductase, C-terminal domains [ 48310]  (1)
  Aldehyde ferredoxin oxidoreductase, N-terminal domain [ 56228]  (1)
  Allene oxide cyclase-like [ 141493]  (1)
  Allophycocyanin linker chain (domain) [ 54580]  (1)
  Alpha subunit of glutamate synthase, C-terminal domain [ 69336]  (1)
  Alpha-2,3/8-sialyltransferase CstII [ 102414]  (1)
  Alpha-hemoglobin stabilizing protein AHSP [ 109751]  (1)
  Alpha-lytic protease prodomain [ 54806]  (1)
  Alpha-macroglobulin receptor domain [ 49410]  (1)
  Amb V allergen [ 57296]  (1)
  Amidase signature (AS) enzymes [ 75304]  (1)
  Amine oxidase N-terminal region [ 54416]  (1)
  Amine oxidase catalytic domain [ 49998]  (1)
  Aminomethyltransferase beta-barrel domain [ 101790]  (1)
  Aminopeptidase/glucanase lid domain [ 101821]  (1)
  Ammonium transporter [ 111352]  (1)
  Amphiphilic (amphipathic) alpha helix [ 58799]  (1)
  Amyloid beta a4 protein copper binding domain (domain 2) [ 89811]  (1)
  Amyloid peptides [ 58605]  (1)
  An insect antifreeze protein [ 51177]  (1)
  Anaphylotoxins (complement system) [ 47686]  (1)
  Angiotensin [ 90270]  (1)
  Ankyrin repeat [ 48403]  (1)
  Annexin [ 47874]  (1)
  Antennapedia homeodomain fragments [ 70048]  (1)
  Anthrax protective antigen [ 56988]  (1)
  Anti-lipopolysaccharide factor [ 54757]  (1)
  Anti-sigma factor AsiA [ 69070]  (1)
  Anti-sigma factor FlgM [ 101498]  (1)
  Antibiotic binding domain of TipA-like multidrug resistance regulators [ 89082]  (1)
  Anticancer peptides [ 118391]  (1)
  Anticodon-binding domain of PheRS [ 54991]  (1)
  Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases [ 47323]  (1)
  Antifreeze polypeptide HPLC-6 [ 58410]  (1)
  Antifungal protein (AGAFP) [ 57598]  (1)
  Antigen MPT63/MPB63 (immunoprotective extracellular protein) [ 81982]  (1)
  Antimicrobial peptide HP(2-20) [ 90276]  (1)
  Antivirulence factor [ 103383]  (1)
  ApaG-like [ 110069]  (1)
  Api92-like [ 160940]  (1)
  Apical membrane antigen 1 [ 82910]  (1)
  Apolipophorin-III [ 47857]  (1)
  Apolipoprotein [ 47162]  (1)
  Apolipoprotein A-I [ 58113]  (1)
  Apolipoprotein A-II [ 82936]  (1)
  Apyrase [ 101887]  (1)
  Aquaporin-like [ 81338]  (1)
  Archaeal IMP cyclohydrolase PurO [ 75569]  (1)
  Argininosuccinate synthetase, C-terminal domain [ 69864]  (1)
  Arginyl-tRNA synthetase (ArgRS), N-terminal 'additional' domain [ 55190]  (1)
  Aromatic aminoacid monoxygenases, catalytic and oligomerization domains [ 56534]  (1)
  Aromatic compound dioxygenase [ 49482]  (1)
  Arp2/3 complex 16 kDa subunit ARPC5 [ 69103]  (1)
  Arp2/3 complex 21 kDa subunit ARPC3 [ 69060]  (1)
  Arp2/3 complex subunits [ 69645]  (1)
  Artificial ankyrin repeat proteins [ 83018]  (1)
  Aspartate carbamoyltransferase, Regulatory-chain, C-terminal domain [ 57825]  (1)
  Aspartate carbamoyltransferase, Regulatory-chain, N-terminal domain [ 54893]  (1)
  Aspartate receptor, ligand-binding domain [ 47170]  (1)
  Aspartate/glutamate racemase [ 53681]  (1)
  Aspartate/ornithine carbamoyltransferase [ 53671]  (1)
  Assembly domain of cartilage oligomeric matrix protein [ 58006]  (1)
  At5g01610-like [ 141562]  (1)
  AtpF-like [ 159468]  (1)
  Atrial natriuretic peptide [ 58433]  (1)
  AttH-like [ 159245]  (1)
  Atu1913-like [ 141099]  (1)
  Autotransporter [ 103515]  (1)
  Ava3019-like [ 160532]  (1)
  Avidin/streptavidin [ 50876]  (1)
  Avirulence protein AvrPto [ 116854]  (1)
  a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) [ 81648]  (1)
  alpha-2a adrenergic receptor pepride t3-i2 [ 75757]  (1)
  alpha-Amylase inhibitor tendamistat [ 49498]  (1)
  alpha-D-mannose-specific plant lectins [ 51110]  (1)
  alpha-helical hairpin of p8mtcp1 [ 58784]  (1)
  alpha-ketoacid dehydrogenase kinase, N-terminal domain [ 69012]  (1)
  alpha-lactalbumin peptide model [ 58683]  (1)
  alpha2d [ 58883]  (1)
  anthrax toxin protective antigen-receptor complex [ 111490]  (1)

B

SuperfamilyDescription [Sunid] (#Children)
Prefixed with B   Bet v1-like [ 55961]  (10)
  beta-beta-alpha zinc fingers [ 57667]  (7)
  Bacterial adhesins [ 49401]  (6)
  BRCT domain [ 52113]  (5)
  BAR/IMD domain-like [ 103657]  (4)
  Bacterial luciferase-like [ 51679]  (4)
  Barwin-like endoglucanases [ 50685]  (4)
  BPTI-like [ 57362]  (3)
  Bifunctional inhibitor/lipid-transfer protein/seed storage 2S albumin [ 47699]  (3)
  beta-N-acetylhexosaminidase-like domain [ 55545]  (3)
  beta-lactamase/transpeptidase-like [ 56601]  (3)
  B12-dependent dehydatase associated subunit [ 52968]  (2)
  Bacterial enterotoxins [ 50203]  (2)
  Bacterial hemolysins [ 58100]  (2)
  Bacterial immunoglobulin/albumin-binding domains [ 46997]  (2)
  Bacteriocin immunity protein-like [ 109797]  (2)
  Bacteriophage trimeric proteins domain [ 141658]  (2)
  beta and beta-prime subunits of DNA dependent RNA-polymerase [ 64484]  (2)
  beta-Barrel protease inhibitors [ 50882]  (2)
  2,3-Bisphosphoglycerate-independent phosphoglycerate mutase, substrate-binding domain [ 64158]  (1)
  B-box zinc-binding domain [ 57845]  (1)
  B-form DNA mimic Ocr [ 101059]  (1)
  BAG domain [ 63491]  (1)
  BAH domain [ 82061]  (1)
  BAS1536-like [ 140500]  (1)
  BB1717-like [ 143081]  (1)
  BB2672-like [ 160519]  (1)
  BC4932-like [ 159121]  (1)
  BEACH domain [ 81837]  (1)
  BH2638-like [ 158504]  (1)
  BH3618-like [ 141457]  (1)
  BH3703-like [ 160424]  (1)
  BH3980-like [ 158560]  (1)
  BLRF2-like [ 160459]  (1)
  BRCA2 BRC4 repeat [ 82986]  (1)
  BRCA2 helical domain [ 81872]  (1)
  BRCA2 tower domain [ 81878]  (1)
  BRK domain-like [ 160481]  (1)
  BSD domain-like [ 140383]  (1)
  BT0923-like [ 160574]  (1)
  BTG domain-like [ 160696]  (1)
  BTV NS2-like ssRNA-binding domain [ 110132]  (1)
  Bacillus cereus metalloprotein-like [ 158430]  (1)
  Bacillus phage protein [ 111074]  (1)
  Bacterial GAP domain [ 47233]  (1)
  Bacterial aa3 type cytochrome c oxidase subunit IV [ 81469]  (1)
  Bacterial ba3 type cytochrome c oxidase subunit IIa [ 81473]  (1)
  Bacterial exopeptidase dimerisation domain [ 55031]  (1)
  Bacterial fluorinating enzyme, C-terminal domain [ 101852]  (1)
  Bacterial fluorinating enzyme, N-terminal domain [ 102522]  (1)
  Bacterial muramidases [ 48435]  (1)
  Bacterial photosystem II reaction centre, L and M subunits [ 81483]  (1)
  Bacterial polysaccharide co-polymerase-like [ 160355]  (1)
  Bactericidal permeability-increasing protein, BPI [ 55394]  (1)
  Bacteriochlorophyll A protein [ 51081]  (1)
  Bacteriocin AS-48 [ 47869]  (1)
  Bacteriophage HK97 procapsid (prohead II) [ 64612]  (1)
  Bacteriophage T4 3D cryo-EM reconstruction [ 103675]  (1)
  Baculovirus p35 protein [ 49894]  (1)
  Band 7/SPFH domain [ 117892]  (1)
  Barrier-to-autointegration factor, BAF [ 47798]  (1)
  Barstar fragment [ 83003]  (1)
  Barstar-related [ 52038]  (1)
  Baseplate structural protein gp11 [ 56558]  (1)
  Baseplate structural protein gp8 [ 89433]  (1)
  Bcl-2 inhibitors of programmed cell death [ 56854]  (1)
  Bcr-Abl oncoprotein oligomerization domain [ 69036]  (1)
  Beta-D-glucan exohydrolase, C-terminal domain [ 52279]  (1)
  Beta-galactosidase LacA, domain 3 [ 117100]  (1)
  Beta-sheet designs [ 75790]  (1)
  Bhpbr3, the Baff-binding loop of br3 embedded in a beta-hairpin peptide [ 82993]  (1)
  Blood clotting [ 58188]  (1)
  Blood coagulation inhibitor (disintegrin) [ 57552]  (1)
  BolA-like [ 82657]  (1)
  Bowman-Birk inhibitor, BBI [ 57247]  (1)
  Box B RNA-binding N peptide [ 58339]  (1)
  Bradykinin [ 58513]  (1)
  Bromelain inhibitor VI (cysteine protease inhibitor) [ 57243]  (1)
  Bromodomain [ 47370]  (1)
  Bubble protein [ 103565]  (1)
  beta-Catenine bound non-globular protein regions [ 58754]  (1)
  beta-Galactosidase/glucuronidase domain [ 49303]  (1)
  beta-Roll [ 51120]  (1)
  beta-carbonic anhydrase, cab [ 53056]  (1)
  beta-catenin-interacting protein ICAT [ 81730]  (1)
  beta-hairpin design [ 64693]  (1)
  beta-lactamase-inhibitor protein, BLIP [ 55648]  (1)
  beta-sandwich domain of Sec23/24 [ 81995]  (1)

C

SuperfamilyDescription [Sunid] (#Children)
Prefixed with C   Concanavalin A-like lectins/glucanases [ 49899]  (25)
  Cysteine proteinases [ 54001]  (22)
  Clavaminate synthase-like [ 51197]  (13)
  Composite domain of metallo-dependent hydrolases [ 51338]  (11)
  Class I glutamine amidotransferase-like [ 52317]  (9)
  C-type lectin-like [ 56436]  (8)
  Cytochrome c [ 46626]  (8)
  CheY-like [ 52172]  (7)
  Conotoxins [ 58465]  (7)
  Cupredoxins [ 49503]  (7)
  Cystine-knot cytokines [ 57501]  (7)
  Cystatin/monellin [ 54403]  (6)
  Cytidine deaminase-like [ 53927]  (5)
  Chorismate mutase II [ 48600]  (4)
  Class II aaRS and biotin synthetases [ 55681]  (4)
  ClpP/crotonase [ 52096]  (4)
  Cobalamin (vitamin B12)-dependent enzymes [ 51703]  (4)
  Cyclophilin-like [ 50891]  (4)
  Cyclotides [ 57038]  (4)
  C-terminal domain of transcriptional repressors [ 50037]  (3)
  C-terminal effector domain of the bipartite response regulators [ 46894]  (3)
  CBD9-like [ 49344]  (3)
  CNF1/YfiH-like putative cysteine hydrolases [ 64438]  (3)
  Calcium-dependent phosphotriesterase [ 63829]  (3)
  Carbamate kinase-like [ 53633]  (3)
  Carbohydrate-binding domain [ 49384]  (3)
  Cell growth inhibitor/plasmid maintenance toxic component [ 50118]  (3)
  Chelatase [ 53800]  (3)
  Chorismate lyase-like [ 64288]  (3)
  Chromo domain-like [ 54160]  (3)
  Clathrin adaptor appendage domain [ 49348]  (3)
  CoA-dependent acyltransferases [ 52777]  (3)
  Cyclin-like [ 47954]  (3)
  Cysteine-rich domain [ 57889]  (3)
  cAMP-binding domain-like [ 51206]  (3)
  C2 domain (Calcium/lipid-binding domain, CaLB) [ 49562]  (2)
  CAD & PB1 domains [ 54277]  (2)
  CYTH-like phosphatases [ 55154]  (2)
  Cadherin-like [ 49313]  (2)
  Carbohydrate phosphatase [ 56655]  (2)
  Carbon-nitrogen hydrolase [ 56317]  (2)
  Carboxypeptidase regulatory domain-like [ 49464]  (2)
  Caspase-like [ 52129]  (2)
  Chondroitin AC/alginate lyase [ 48230]  (2)
  Class II aaRS ABD-related [ 52954]  (2)
  ClpS-like [ 54736]  (2)
  Cobalamin adenosyltransferase-like [ 89028]  (2)
  Colicin D/E5 nuclease domain [ 102824]  (2)
  Conantokin [ 58495]  (2)
  Crisp domain-like [ 57546]  (2)
  Cullin repeat-like [ 74788]  (2)
  Cysteine alpha-hairpin motif [ 47072]  (2)
  Cytochrome b5-like heme/steroid binding domain [ 55856]  (2)
  Cytochromes [ 47175]  (2)
  Cytokine [ 50353]  (2)
  Cytolysin/lectin [ 63724]  (2)
  3-carboxy-cis,cis-mucoante lactonizing enzyme [ 75011]  (1)
  C-terminal (heme d1) domain of cytochrome cd1-nitrite reductase [ 51004]  (1)
  C-terminal UvrC-binding domain of UvrB [ 46600]  (1)
  C-terminal autoproteolytic domain of nucleoporin nup98 [ 82215]  (1)
  C-terminal domain of B transposition protein [ 47681]  (1)
  C-terminal domain of DFF45/ICAD (DFF-C domain) [ 81783]  (1)
  C-terminal domain of Ku80 [ 101420]  (1)
  C-terminal domain of PLC-beta [ 69989]  (1)
  C-terminal domain of ProRS [ 64586]  (1)
  C-terminal domain of RNA polymerase alpha subunit [ 47789]  (1)
  C-terminal domain of adenylylcyclase associated protein [ 69340]  (1)
  C-terminal domain of alpha and beta subunits of F1 ATP synthase [ 47917]  (1)
  C-terminal domain of arginine repressor [ 55252]  (1)
  C-terminal domain of mollusc hemocyanin [ 81277]  (1)
  C-terminal fragment of thermolysin [ 63388]  (1)
  C-terminal, gelsolin-like domain of Sec23/24 [ 82754]  (1)
  CAC2185-like [ 142795]  (1)
  CAPPD, an extracellular domain of amyloid beta A4 protein [ 109843]  (1)
  CBS-domain pair [ 54631]  (1)
  CCCH zinc finger [ 90229]  (1)
  CCHHC domain [ 103637]  (1)
  CD4 and CD8 receptor regions [ 58636]  (1)
  CHY zinc finger-like [ 161219]  (1)
  CI-2 family of serine protease inhibitors [ 54654]  (1)
  CO dehydrogenase ISP C-domain like [ 47741]  (1)
  CO dehydrogenase flavoprotein C-terminal domain-like [ 55447]  (1)
  CO dehydrogenase molybdoprotein N-domain-like [ 54665]  (1)
  CPE0013-like [ 160148]  (1)
  CRAL/TRIO N-terminal domain [ 46938]  (1)
  CRAL/TRIO domain [ 52087]  (1)
  CRISPR-associated protein [ 117987]  (1)
  CSL zinc finger [ 144217]  (1)
  CV3147-like [ 160991]  (1)
  Cag-Z [ 109839]  (1)
  CalX-like [ 141072]  (1)
  Calcium ATPase, transduction domain A [ 81653]  (1)
  Calcium ATPase, transmembrane domain M [ 81665]  (1)
  Calcium-mediated lectin [ 82026]  (1)
  Calcyclin-binding protein-like [ 140106]  (1)
  Calmodulin [ 58908]  (1)
  Calpain large subunit, middle domain (domain III) [ 49758]  (1)
  Calponin-homology domain, CH-domain [ 47576]  (1)
  Cannabinoid receptor 1 (CB1) fragment [ 83008]  (1)
  Cap-Gly domain [ 74924]  (1)
  Capsid protein major homology region peptide analog [ 58630]  (1)
  CarD-like [ 141259]  (1)
  Carbamoyl phosphate synthetase, large subunit connection domain [ 48108]  (1)
  Carbamoyl phosphate synthetase, small subunit N-terminal domain [ 52021]  (1)
  Carbohydrate binding domain [ 51055]  (1)
  Carbonic anhydrase [ 51069]  (1)
  Carboxypeptidase A prodomain-based design [ 103790]  (1)
  Carboxypeptidase inhibitor [ 57620]  (1)
  Casein kinase II beta subunit [ 57798]  (1)
  Catestatin fragment from chromogranin A [ 75762]  (1)
  Cation efflux protein cytoplasmic domain-like [ 160240]  (1)
  Cation efflux protein transmembrane domain-like [ 161111]  (1)
  CbiD-like [ 111342]  (1)
  CbiG N-terminal domain-like [ 159672]  (1)
  CcmK-like [ 143414]  (1)
  CdCA1 repeat-like [ 159779]  (1)
  Cdc48 domain 2-like [ 54585]  (1)
  Cell cycle regulatory proteins [ 55637]  (1)
  Cell division protein MinE topological specificity domain [ 55229]  (1)
  Cell division protein ZapA-like [ 102829]  (1)
  Cell wall binding repeat [ 69360]  (1)
  Cell-division inhibitor MinC, C-terminal domain [ 63848]  (1)
  Cell-division inhibitor MinC, N-terminal domain [ 64043]  (1)
  Cell-division protein ZipA, C-terminal domain [ 64383]  (1)
  Cellulose docking domain, dockering [ 64571]  (1)
  Cellulose-binding domain [ 57180]  (1)
  Cgl1923-like [ 159659]  (1)
  ChaB-like [ 140376]  (1)
  Chalcone isomerase [ 54626]  (1)
  Chaperone J-domain [ 46565]  (1)
  CheC-like [ 103039]  (1)
  CheW-like [ 50341]  (1)
  CheY-binding domain of CheA [ 55052]  (1)
  Chemosensory protein Csp2 [ 100910]  (1)
  Chemotaxis phosphatase CheZ [ 75708]  (1)
  Chemotaxis receptor methyltransferase CheR, N-terminal domain [ 47757]  (1)
  Chicken cartilage matrix protein [ 58002]  (1)
  Chitinase insertion domain [ 54556]  (1)
  Chlorophyll a-b binding protein [ 103511]  (1)
  Cholecystokinin A receptor, N-domain [ 57642]  (1)
  Cholecystokinin receptor fragments [ 64649]  (1)
  Chorismate synthase, AroC [ 103263]  (1)
  Chromosomal protein MC1 [ 102875]  (1)
  CinA-like [ 142433]  (1)
  Citrate synthase [ 48256]  (1)
  Class II MHC-associated invariant chain ectoplasmic trimerization domain [ 48305]  (1)
  Clathrin heavy-chain terminal domain [ 50989]  (1)
  Clc chloride channel [ 81340]  (1)
  Cloacin translocation domain [ 69369]  (1)
  Cloroperoxidase [ 47571]  (1)
  Clostridium neurotoxins, "coiled-coil" domain [ 58091]  (1)
  Cna protein B-type domain [ 49478]  (1)
  CoA-transferase family III (CaiB/BaiF) [ 89796]  (1)
  CoaB-like [ 102645]  (1)
  Coagulation factor VIII, membrane-binding peptide [ 58369]  (1)
  Coat protein-binding domain of bacteriophage P22 scaffolding protein [ 58688]  (1)
  CobE/GbiG C-terminal domain-like [ 159664]  (1)
  Cobalamin (vitamin B12)-binding domain [ 52242]  (1)
  CofD-like [ 142338]  (1)
  CofE-like [ 144010]  (1)
  Coiled serine [ 58813]  (1)
  Coiled-coil dimerization domain from cortexillin I [ 58018]  (1)
  Coiled-coil domain of nucleotide exchange factor GrpE [ 58014]  (1)
  Colicin [ 56837]  (1)
  Colicin D immunity protein [ 101125]  (1)
  Colicin E immunity proteins [ 47345]  (1)
  Colicin E3 immunity protein [ 54552]  (1)
  Colicin E3 receptor domain [ 69985]  (1)
  Colicin Ia, N-terminal domain [ 58096]  (1)
  Colipase-like [ 57190]  (1)
  Collagen fibre [ 144297]  (1)
  Collagen-binding domain [ 89260]  (1)
  Collagen-like peptides [ 58806]  (1)
  ComB-like [ 142823]  (1)
  Complement control module/SCR domain [ 57535]  (1)
  Compstatin [ 58438]  (1)
  Computational models partly based on experimental data [ 58199]  (1)
  Connexin43 [ 118220]  (1)
  Conserved core of transcriptional regulatory protein vp16 [ 56548]  (1)
  Conserved domain common to transcription factors TFIIS, elongin A, CRSP70 [ 47676]  (1)
  Contryphan-R [ 58503]  (1)
  Copper amine oxidase, domain N [ 55383]  (1)
  Coproporphyrinogen III oxidase [ 102886]  (1)
  CorA soluble domain-like [ 143865]  (1)
  Core binding factor beta, CBF [ 50723]  (1)
  Coronavirus NSP10-like [ 144246]  (1)
  Coronavirus NSP7-like [ 140367]  (1)
  Coronavirus NSP8-like [ 143076]  (1)
  Coronavirus RNA-binding domain [ 110304]  (1)
  Coronavirus S2 glycoprotein [ 111474]  (1)
  Corticotropin releasing hormone [ 58385]  (1)
  Crambin-like [ 57429]  (1)
  Creatinase/aminopeptidase [ 55920]  (1)
  Creatinase/prolidase N-terminal domain [ 53092]  (1)
  Creatininase [ 102215]  (1)
  Cro lambda fold design [ 144350]  (1)
  Cross-reactive peptides from 60S acidic ribosomal protein p2 [ 103769]  (1)
  Crustacean CHH/MIH/GIH neurohormone [ 81778]  (1)
  Cryptochrome/photolyase FAD-binding domain [ 48173]  (1)
  Cryptochrome/photolyase, N-terminal domain [ 52425]  (1)
  CsrA-like [ 117130]  (1)
  Ctag/Cox11 [ 110111]  (1)
  Cu,Zn superoxide dismutase-like [ 49329]  (1)
  Cullin homology domain [ 75632]  (1)
  CutC-like [ 110395]  (1)
  Cyanase C-terminal domain [ 55234]  (1)
  Cyanovirin-N [ 51322]  (1)
  Cysteine-rich DNA binding domain, (DM domain) [ 82927]  (1)
  CytB endotoxin-like [ 55676]  (1)
  Cytochrome P450 [ 48264]  (1)
  Cytochrome b559 subunits [ 161045]  (1)
  Cytochrome c oxidase subunit E [ 48479]  (1)
  Cytochrome c oxidase subunit I-like [ 81442]  (1)
  Cytochrome c oxidase subunit II-like, transmembrane region [ 81464]  (1)
  Cytochrome c oxidase subunit III-like [ 81452]  (1)
  Cytochrome c oxidase subunit h [ 47694]  (1)
  Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor [ 81496]  (1)
  Cytochrome f subunit of the cytochrome b6f complex, transmembrane anchor [ 103431]  (1)
  Cytochrome f, large domain [ 49441]  (1)
  cAMP and cGMP phosphodiesterase (PDE) fragments [ 58651]  (1)
  clathrin assemblies [ 111485]  (1)

D

SuperfamilyDescription [Sunid] (#Children)
Prefixed with D   Dimeric alpha+beta barrel [ 54909]  (23)
  DHS-like NAD/FAD-binding domain [ 52467]  (6)
  DNA-glycosylase [ 48150]  (6)
  DNA/RNA polymerases [ 56672]  (6)
  DEATH domain [ 47986]  (4)
  DNA ligase/mRNA capping enzyme, catalytic domain [ 56091]  (4)
  DNA-binding domain [ 54171]  (4)
  Diaminopimelate epimerase-like [ 54506]  (4)
  DinB/YfiT-like putative metalloenzymes [ 109854]  (4)
  DNase I-like [ 56219]  (3)
  Defensin-like [ 57392]  (3)
  dsRNA-binding domain-like [ 54768]  (3)
  DAK1/DegV-like [ 82549]  (2)
  DHH phosphoesterases [ 64182]  (2)
  DNA breaking-rejoining enzymes [ 56349]  (2)
  DNA clamp [ 55979]  (2)
  DNA methylase specificity domain [ 116734]  (2)
  DNA primase core [ 56731]  (2)
  DNA-binding pseudobarrel domain [ 101936]  (2)
  Dehydroquinate synthase-like [ 56796]  (2)
  Di-copper centre-containing domain [ 48056]  (2)
  Dihydrofolate reductase-like [ 53597]  (2)
  Dihydropteroate synthetase-like [ 51717]  (2)
  DmpA/ArgJ-like [ 56266]  (2)
  DsrEFH-like [ 75169]  (2)
  Duplicated hybrid motif [ 51261]  (2)
  1-deoxy-D-xylulose-5-phosphate reductoisomerase, C-terminal domain [ 69055]  (1)
  D-aminoacid aminotransferase-like PLP-dependent enzymes [ 56752]  (1)
  D-aminopeptidase, middle and C-terminal domains [ 50886]  (1)
  D-lysine 5,6-aminomutase beta subunit KamE, N-terminal domain [ 117778]  (1)
  D-ribose-5-phosphate isomerase (RpiA), lid domain [ 75445]  (1)
  DBL homology domain (DH-domain) [ 48065]  (1)
  DEK C-terminal domain [ 109715]  (1)
  DLC [ 54648]  (1)
  DNA damage-inducible protein DinI [ 54857]  (1)
  DNA helicase RuvA subunit, C-terminal domain [ 46929]  (1)
  DNA mismatch repair protein MutL [ 118116]  (1)
  DNA polymerase III chi subunit [ 102400]  (1)
  DNA polymerase III psi subunit [ 102220]  (1)
  DNA polymerase III theta subunit-like [ 46575]  (1)
  DNA polymerase beta, N-terminal domain-like [ 47802]  (1)
  DNA primase DnaG, C-terminal domain [ 117023]  (1)
  DNA repair protein MutS, domain I [ 55271]  (1)
  DNA repair protein MutS, domain II [ 53150]  (1)
  DNA repair protein MutS, domain III [ 48334]  (1)
  DNA terminal protein [ 140919]  (1)
  DNA topoisomerase I domain [ 55869]  (1)
  DNA topoisomerase IV, alpha subunit [ 56726]  (1)
  DNA-binding C-terminal domain of the transcription factor MotA [ 69652]  (1)
  DNA-binding domain of EIN3-like [ 116768]  (1)
  DNA-binding domain of Mlu1-box binding protein MBP1 [ 54616]  (1)
  DNA-binding domain of intron-encoded endonucleases [ 64496]  (1)
  DNA-binding domain of retroviral integrase [ 50122]  (1)
  DNA-binding domains of HMG-I(Y) [ 58349]  (1)
  DNA-binding protein LAG-1 (CSL) [ 110217]  (1)
  DNA-binding protein Tfx [ 89915]  (1)
  DOPA-like [ 143410]  (1)
  DPP6 N-terminal domain-like [ 82171]  (1)
  DPY module [ 90148]  (1)
  DR1885-like metal-binding protein [ 110087]  (1)
  DTD-like [ 69500]  (1)
  DUSP-like [ 143791]  (1)
  Dcp2 domain-like [ 140586]  (1)
  Delta-sleep-inducing peptide immunoreactive peptide [ 58026]  (1)
  DeoB insert domain-like [ 143856]  (1)
  Designed EF-hand type cation-binding loop [ 111555]  (1)
  Designed four-helix bundle protein [ 58833]  (1)
  Designed heterodimeric coiled-coil [ 58823]  (1)
  Designed single chain three-helix bundle [ 58840]  (1)
  Designed trimeric coiled-coil [ 100904]  (1)
  Dextranase, N-terminal domain [ 101596]  (1)
  DhaL-like [ 101473]  (1)
  Dhaf3308-like [ 159713]  (1)
  Dimerisation domain of CENP-B [ 101160]  (1)
  Dimerization cofactor of HNF-1 alpha [ 100957]  (1)
  Dimerization motif of sir4 [ 90242]  (1)
  Dimerization-anchoring domain of cAMP-dependent PK regulatory subunit [ 47391]  (1)
  Diol dehydratase, gamma subunit [ 47148]  (1)
  Dipeptide transport protein [ 63992]  (1)
  Dipeptidyl peptidase I (cathepsin C), exclusion domain [ 75001]  (1)
  Diphtheria toxin, C-terminal domain [ 49380]  (1)
  Diphtheria toxin, middle domain [ 56845]  (1)
  DnaD domain-like [ 158499]  (1)
  DnaJ/Hsp40 cysteine-rich domain [ 57938]  (1)
  DnaK suppressor protein DksA, alpha-hairpin domain [ 109635]  (1)
  Docking domain A of the erythromycin polyketide synthase (DEBS) [ 101166]  (1)
  Docking domain B of the erythromycin polyketide synthase (DEBS) [ 101173]  (1)
  Dodecin-like [ 89807]  (1)
  Dom34/Pelota N-terminal domain-like [ 159065]  (1)
  Domain from hypothetical 2610208m17rik protein [ 109779]  (1)
  Domain of early E2A DNA-binding protein, ADDBP [ 47724]  (1)
  Domain of poly(ADP-ribose) polymerase [ 47587]  (1)
  Domain of the SRP/SRP receptor G-proteins [ 47364]  (1)
  Double Clp-N motif [ 81923]  (1)
  Double-stranded DNA-binding domain [ 46950]  (1)
  Doublecortin (DC) [ 89837]  (1)
  DsbB-like [ 158442]  (1)
  DsbC/DsbG N-terminal domain-like [ 54423]  (1)
  DsrC, the gamma subunit of dissimilatory sulfite reductase [ 69721]  (1)
  Duffy binding domain-like [ 140924]  (1)
  Dystroglycan, domain 2 [ 111006]  (1)
  dUTPase-like [ 51283]  (1)
  delta-Endotoxin (insectocide), N-terminal domain [ 56849]  (1)
  delta-Endotoxin (insectocide), middle domain [ 51096]  (1)
  delta-Toxin [ 58308]  (1)

E

SuperfamilyDescription [Sunid] (#Children)
Prefixed with E   E set domains [ 81296]  (23)
  EF-hand [ 47473]  (11)
  EGF/Laminin [ 57196]  (7)
  ENTH/VHS domain [ 48464]  (4)
  Electron transport accessory proteins [ 50090]  (4)
  EF-G C-terminal domain-like [ 54980]  (3)
  Endosomal sorting complex assembly domain [ 140111]  (3)
  EreA/ChaN-like [ 159501]  (3)
  E2F-DP heterodimerization region [ 144074]  (2)
  EPT/RTPC-like [ 55205]  (2)
  EndoU-like [ 142877]  (2)
  Enolase C-terminal domain-like [ 51604]  (2)
  EspA/CesA-like [ 116927]  (2)
  eIF4e-like [ 55418]  (2)
  E2 regulatory, transactivation domain [ 51332]  (1)
  E6 C-terminal domain-like [ 161229]  (1)
  E7 C-terminal domain-like [ 161234]  (1)
  EAL domain-like [ 141868]  (1)
  EB1 dimerisation domain-like [ 140612]  (1)
  EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain [ 50465]  (1)
  EF2458-like [ 140404]  (1)
  EF2947-like [ 140607]  (1)
  ENT-like [ 158639]  (1)
  ENV polyprotein, receptor-binding domain [ 49830]  (1)
  ERH-like [ 143875]  (1)
  ERO1-like [ 110019]  (1)
  ERP29 C domain-like [ 47933]  (1)
  EV matrix protein [ 50012]  (1)
  Ecotin, trypsin inhibitor [ 49772]  (1)
  Ectatomin subunits [ 47401]  (1)
  Eea1 homodimerisation domain [ 69979]  (1)
  Efb C-domain-like [ 158366]  (1)
  Eferin C-derminal domain-like [ 144270]  (1)
  Elafin-like [ 57256]  (1)
  Electron transport chains [ 58147]  (1)
  Elongation factor TFIIS domain 2 [ 46942]  (1)
  Elongation factor Ts (EF-Ts), dimerisation domain [ 54713]  (1)
  Endothelin-like [ 58450]  (1)
  Enolase N-terminal domain-like [ 54826]  (1)
  Enzyme I of the PEP:sugar phosphotransferase system HPr-binding (sub)domain [ 47831]  (1)
  Enzyme IIa from lactose specific PTS, IIa-lac [ 46973]  (1)
  Ep-cadherin [ 103682]  (1)
  Epsilon subunit of F1F0-ATP synthase C-terminal domain [ 46604]  (1)
  Epsilon subunit of F1F0-ATP synthase N-terminal domain [ 51344]  (1)
  Epsilon subunit of mitochondrial F1F0-ATP synthase [ 48690]  (1)
  Erythropoietin (EPO) mimetic peptides [ 58893]  (1)
  EscU C-terminal domain-like [ 160544]  (1)
  EspE N-terminal domain-like [ 160246]  (1)
  EsxAB dimer-like [ 140453]  (1)
  Eukaryotic DNA topoisomerase I, N-terminal DNA-binding fragment [ 56741]  (1)
  Eukaryotic DNA topoisomerase I, dispensable insert domain [ 46596]  (1)
  Eukaryotic RPB5 N-terminal domain [ 53036]  (1)
  Eukaryotic initiation factor 4f subunit eIF4g, eIF4e-binding domain [ 101489]  (1)
  Eukaryotic type KH-domain (KH-domain type I) [ 54791]  (1)
  EutN/CcmL-like [ 159133]  (1)
  Exotoxin A, middle domain [ 56864]  (1)
  Expressed protein At2g23090/F21P24.15 [ 118359]  (1)
  Extracellular hemoglobin linker subunit, receptor domain [ 141480]  (1)
  Ezrin-radixin-moesin binding phosphoprotein 50 (ebp50) fragments [ 111539]  (1)
  eEF-1beta-like [ 54984]  (1)
  eEF1-gamma domain [ 89942]  (1)
  eIF-2-alpha, C-terminal domain [ 110993]  (1)
  eIF1-like [ 55159]  (1)
  eIF2alpha middle domain-like [ 116742]  (1)

F

SuperfamilyDescription [Sunid] (#Children)
Prefixed with F   Ferritin-like [ 47240]  (9)
  FAD/NAD(P)-binding domain [ 51905]  (8)
  Flavoproteins [ 52218]  (8)
  FAD-linked reductases, C-terminal domain [ 54373]  (7)
  4Fe-4S ferredoxins [ 54862]  (6)
  Ferredoxin reductase-like, C-terminal NADP-linked domain [ 52343]  (5)
  FAD-binding/transporter-associated domain-like [ 56176]  (4)
  FAD-linked oxidases, C-terminal domain [ 55103]  (4)
  FMN-binding split barrel [ 50475]  (4)
  FKBP-like [ 54534]  (3)
  FYVE/PHD zinc finger [ 57903]  (3)
  FabD/lysophospholipase-like [ 52151]  (3)
  Families 57/38 glycoside transferase middle domain [ 88688]  (3)
  Formate/glycerate dehydrogenase catalytic domain-like [ 52283]  (3)
  2Fe-2S ferredoxin-like [ 54292]  (2)
  FAD-linked oxidoreductase [ 51730]  (2)
  FMN-dependent nitroreductase-like [ 55469]  (2)
  FMT C-terminal domain-like [ 50486]  (2)
  FYSH domain [ 89895]  (2)
  Family A G protein-coupled receptor-like [ 81321]  (2)
  Fe-S cluster assembly (FSCA) domain-like [ 117916]  (2)
  Fibre shaft of virus attachment proteins [ 51225]  (2)
  FnI-like domain [ 57603]  (2)
  Folate-binding domain [ 103025]  (2)
  Frataxin/Nqo15-like [ 55387]  (2)
  FucI/AraA C-terminal domain-like [ 50443]  (2)
  FucI/AraA N-terminal and middle domains [ 53743]  (2)
  Fumarate reductase respiratory complex transmembrane subunits [ 81343]  (2)
  F-box domain [ 81383]  (1)
  F1 ATPase inhibitor, IF1, C-terminal domain [ 64602]  (1)
  F1F0 ATP synthase subunit A [ 81336]  (1)
  F1F0 ATP synthase subunit B, membrane domain [ 81573]  (1)
  F1F0 ATP synthase subunit C [ 81333]  (1)
  F420-dependent methylenetetrahydromethanopterin dehydrogenase (MTD) [ 102324]  (1)
  FAD-dependent thiol oxidase [ 69000]  (1)
  FAD/NAD-linked reductases, dimerisation (C-terminal) domain [ 55424]  (1)
  FAH [ 56529]  (1)
  FAS1 domain [ 82153]  (1)
  FAT domain of focal adhesion kinase [ 68993]  (1)
  FF domain [ 81698]  (1)
  FGAM synthase PurL, linker domain [ 109736]  (1)
  FHV B2 protein-like [ 140506]  (1)
  FKBP12-rapamycin-binding domain of FKBP-rapamycin-associated protein (FRAP) [ 47212]  (1)
  FLJ32549 C-terminal domain-like [ 160651]  (1)
  FLJ32549 domain-like [ 158548]  (1)
  FMN-linked oxidoreductases [ 51395]  (1)
  Family 10 polysaccharide lyase [ 81853]  (1)
  Fatty acid synthase [ 144302]  (1)
  FdhE-like [ 144020]  (1)
  Fe,Mn superoxide dismutase (SOD), C-terminal domain [ 54719]  (1)
  Fe,Mn superoxide dismutase (SOD), N-terminal domain [ 46609]  (1)
  Fe-only hydrogenase [ 53920]  (1)
  Fe-only hydrogenase smaller subunit [ 48674]  (1)
  Ferredoxin chloroplastic transit peptide [ 58556]  (1)
  Ferredoxin thioredoxin reductase (FTR), catalytic beta chain [ 57662]  (1)
  Fertilization protein [ 47082]  (1)
  Fibrinogen C-terminal domain-like [ 56496]  (1)
  Fibrinogen coiled-coil and central regions [ 58010]  (1)
  Fibritin [ 58046]  (1)
  Fibronectin type III [ 49265]  (1)
  Fic-like [ 140931]  (1)
  FimD N-terminal domain-like [ 141729]  (1)
  FinO-like [ 48657]  (1)
  FlaG-like [ 160214]  (1)
  Flagellar export chaperone FliS [ 101116]  (1)
  Flagellar hook protein flgE [ 117143]  (1)
  Flagellar transcriptional activator FlhD [ 63592]  (1)
  Flavivirus capsid protein C [ 101257]  (1)
  FlgN-like [ 140566]  (1)
  FlhC-like [ 160930]  (1)
  FliG [ 48029]  (1)
  FomD-like [ 159234]  (1)
  Formate dehydrogenase/DMSO reductase, domains 1-3 [ 53706]  (1)
  Formiminotransferase domain of formiminotransferase-cyclodeaminase. [ 55116]  (1)
  Formin homology 2 domain (FH2 domain) [ 101447]  (1)
  Formylmethanofuran:tetrahydromethanopterin formyltransferase [ 55112]  (1)
  Formyltransferase [ 53328]  (1)
  Fragments of TNF receptors [ 111534]  (1)
  Fragments of apolipoproteins [ 58580]  (1)
  Fragments of bowman-birk inhibitor [ 58575]  (1)
  Fragments of the L-type calcium channel alpha subunit Cav.1 (dihydropyridine receptor) [ 58739]  (1)
  Frizzled cysteine-rich domain [ 63501]  (1)
  FtsH protease domain-like [ 140990]  (1)
  Fucose-specific lectin [ 89372]  (1)
  FumA C-terminal domain-like [ 117457]  (1)
  Fumarylacetoacetate hydrolase, FAH, N-terminal domain [ 63433]  (1)
  Functional domain of the splicing factor Prp18 [ 47938]  (1)
  Fungal elicitin [ 48647]  (1)
  Fungal immunomodulatory protein, FIP [ 101542]  (1)
  FwdE-like [ 143555]  (1)
  FxFG nucleoporin repeats [ 58749]  (1)
  Fzo-like conserved region [ 111479]  (1)
  flu NP-like [ 161003]  (1)

G

SuperfamilyDescription [Sunid] (#Children)
Prefixed with G   Galactose-binding domain-like [ 49785]  (32)
  Glucocorticoid receptor-like (DNA-binding domain) [ 57716]  (18)
  Galactose mutarotase-like [ 74650]  (11)
  Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase [ 54593]  (10)
  Glutathione synthetase ATP-binding domain-like [ 56059]  (9)
  Glycoside hydrolase/deacetylase [ 88713]  (8)
  GHMP Kinase, C-terminal domain [ 55060]  (7)
  gamma-Crystallin-like [ 49695]  (6)
  GlnB-like [ 54913]  (5)
  Glutamine synthetase/guanido kinase [ 55931]  (5)
  Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain [ 55347]  (5)
  Glycosyl hydrolase domain [ 51011]  (5)
  GAF domain-like [ 55781]  (4)
  GINS helical bundle-like [ 158573]  (4)
  Globin-like [ 46458]  (4)
  Group II dsDNA viruses VP [ 49749]  (3)
  G protein-binding domain [ 103652]  (2)
  GAD domain-like [ 55261]  (2)
  GAT-like domain [ 89009]  (2)
  GFP-like [ 54511]  (2)
  GST C-terminal domain-like [ 47616]  (2)
  GTPase activation domain, GAP [ 48350]  (2)
  GatB/YqeY motif [ 89095]  (2)
  GroEL apical domain-like [ 52029]  (2)
  GroEL equatorial domain-like [ 48592]  (2)
  GroEL-intermediate domain like [ 54849]  (2)
  GroES-like [ 50129]  (2)
  Gurmarin-like [ 57048]  (2)
  GAS2 domain-like [ 143575]  (1)
  GCM domain [ 90073]  (1)
  GDNF receptor-like [ 110035]  (1)
  GIY-YIG endonuclease [ 82771]  (1)
  GK1464-like [ 143579]  (1)
  GLA-domain [ 57630]  (1)
  GMP synthetase C-terminal dimerisation domain [ 54810]  (1)
  GRIP domain [ 101283]  (1)
  GTF2I-like repeat [ 117773]  (1)
  GTP cyclohydrolase I feedback regulatory protein, GFRP [ 69761]  (1)
  GUN4-like [ 140869]  (1)
  GYF domain [ 55277]  (1)
  Galactose oxidase, central domain [ 50965]  (1)
  Gam-like [ 161266]  (1)
  Gametocyte protein Pfg27 [ 89162]  (1)
  Gamma-glutamyl cyclotransferase-like [ 110857]  (1)
  Ganglioside M2 (gm2) activator [ 63707]  (1)
  GatD N-terminal domain-like [ 141300]  (1)
  Gated mechanosensitive channel [ 81330]  (1)
  GckA/TtuD-like [ 82544]  (1)
  Gelsolin fragment (residues 150-169) [ 58610]  (1)
  Geminin coiled-coil domain [ 111469]  (1)
  General secretion pathway protein M, EpsM [ 103054]  (1)
  Genome linked protein vpg [ 144331]  (1)
  GlcG-like [ 143744]  (1)
  GlpP-like [ 110391]  (1)
  Glu-tRNAGln amidotransferase C subunit [ 141000]  (1)
  Glucose permease domain IIB [ 55604]  (1)
  Glutaminase/Asparaginase [ 53774]  (1)
  Glutamine synthetase, N-terminal domain [ 54368]  (1)
  Glutamyl tRNA-reductase catalytic, N-terminal domain [ 69742]  (1)
  Glutamyl tRNA-reductase dimerization domain [ 69075]  (1)
  Glycerate kinase I [ 110738]  (1)
  Glycerol-3-phosphate (1)-acyltransferase [ 69593]  (1)
  Glycogen synthesis protein GlgS [ 109747]  (1)
  Glycolipid transfer protein, GLTP [ 110004]  (1)
  Glycosyl hydrolases family 6, cellulases [ 51989]  (1)
  Glytm1bzip [ 70054]  (1)
  GntR ligand-binding domain-like [ 48008]  (1)
  Granulin repeat [ 57277]  (1)
  GreA transcript cleavage protein, N-terminal domain [ 46557]  (1)
  GroE chaperon [ 69999]  (1)
  GroES fragments [ 58646]  (1)
  Group I dsDNA viruses [ 88648]  (1)
  Group V grass pollen allergen [ 81736]  (1)
  Growth factor receptor domain [ 57184]  (1)
  GspK insert domain-like [ 158544]  (1)
  Guanido kinase N-terminal domain [ 48034]  (1)
  Guanosine diphospho-D-mannose pyrophosphorylase/mannose-6-phosphate isomerase linker domain [ 159283]  (1)
  GyrA/ParC C-terminal domain-like [ 101904]  (1)
  gene 59 helicase assembly protein [ 48493]  (1)
  gp120 core [ 56502]  (1)
  gp5 N-terminal domain-like [ 69255]  (1)
  gp9 [ 50017]  (1)
  gpW/gp25-like [ 160719]  (1)

H

SuperfamilyDescription [Sunid] (#Children)
Prefixed with H   HAD-like [ 56784]  (25)
  Homeodomain-like [ 46689]  (19)
  His-Me finger endonucleases [ 54060]  (6)
  Histidine-containing phosphotransfer domain, HPT domain [ 47226]  (6)
  HD-domain/PDEase-like [ 109604]  (5)
  Hedgehog/DD-peptidase [ 55166]  (5)
  "Helical backbone" metal receptor [ 53807]  (4)
  HIT-like [ 54197]  (4)
  HRDC-like [ 47819]  (4)
  HSP20-like chaperones [ 49764]  (4)
  Heme oxygenase-like [ 48613]  (4)
  Histone-fold [ 47113]  (4)
  4-helical cytokines [ 47266]  (3)
  Hairpin loop containing domain-like [ 57414]  (3)
  Heme-dependent peroxidases [ 48113]  (3)
  HIT/MYND zinc finger-like [ 144232]  (2)
  Hedgehog/intein (Hint) domain [ 51294]  (2)
  Heme iron utilization protein-like [ 144064]  (2)
  Heme-dependent catalase-like [ 56634]  (2)
  Homing endonucleases [ 55608]  (2)
  HprK N-terminal domain-like [ 75138]  (2)
  HybD-like [ 53163]  (2)
  HydA/Nqo6-like [ 56770]  (2)
  HydB/Nqo4-like [ 56762]  (2)
  6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase, HPPK [ 55083]  (1)
  H-NS histone-like proteins [ 81273]  (1)
  HAMP domain-like [ 158472]  (1)
  HAND domain of the nucleosome remodeling ATPase ISWI [ 101224]  (1)
  HBS1-like domain [ 109732]  (1)
  HCP-like [ 81901]  (1)
  HI0933 insert domain-like [ 160996]  (1)
  HIN-2000 domain-like [ 159141]  (1)
  HIPIP (high potential iron protein) [ 57652]  (1)
  HIV integrase-binding domain [ 140576]  (1)
  HIV-1 Nef protein fragments [ 58658]  (1)
  HIV-1 REV fragments [ 58326]  (1)
  HIV-1 VPU cytoplasmic domain [ 57647]  (1)
  HIV-1 envelope gp120 protein fragments [ 58663]  (1)
  HIV-1 gp41 fragments [ 70011]  (1)
  HLH, helix-loop-helix DNA-binding domain [ 47459]  (1)
  HMA, heavy metal-associated domain [ 55008]  (1)
  HMG-box [ 47095]  (1)
  HMG-box transcription factor 1 fragments [ 111524]  (1)
  HP0062-like [ 158414]  (1)
  HP0242-like [ 158752]  (1)
  HP1531-like [ 140496]  (1)
  HPr-like [ 55594]  (1)
  HR1 repeat [ 46585]  (1)
  HSC20 (HSCB), C-terminal oligomerisation domain [ 47144]  (1)
  HSP33 redox switch-like [ 118352]  (1)
  HSP40/DnaJ peptide-binding domain [ 49493]  (1)
  HSP90 C-terminal domain [ 110942]  (1)
  HTLV-1 peptide [ 58344]  (1)
  Hcp1-like [ 141452]  (1)
  Head and neck region of the ectodomain of NDV fusion glycoprotein [ 69922]  (1)
  Head decoration protein D (gpD, major capsid protein D) [ 51274]  (1)
  Head domain of nucleotide exchange factor GrpE [ 51064]  (1)
  Head morphogenesis protein gp7 [ 90246]  (1)
  Head-binding domain of phage P22 tailspike protein [ 51327]  (1)
  Head-to-tail joining protein W, gpW [ 64210]  (1)
  Heat shock protein 70kD (HSP70), C-terminal subdomain [ 100934]  (1)
  Heat shock protein 70kD (HSP70), peptide-binding domain [ 100920]  (1)
  Heat-stable enterotoxin (HSE) [ 58458]  (1)
  Heat-stable enterotoxin B [ 57007]  (1)
  Hect, E3 ligase catalytic domain [ 56204]  (1)
  Helical domain of Sec23/24 [ 81811]  (1)
  Helical scaffold and wing domains of SecA [ 81886]  (1)
  Helicase [ 58136]  (1)
  HemD-like [ 69618]  (1)
  Heme chaperone CcmE [ 82093]  (1)
  Heme-binding protein A (HasA) [ 54621]  (1)
  Hemerythrin-like [ 47188]  (1)
  Hemocyanin, N-terminal domain [ 48050]  (1)
  Hemolysin expression modulating protein HHA [ 68989]  (1)
  Hemolytic lectin CEL-III, C-terminal domain [ 111265]  (1)
  Hemopexin-like domain [ 50923]  (1)
  Heparin binding site of non collagenous domain I (nc1) of collagen facit xiv [ 58641]  (1)
  Heparin-binding domain from vascular endothelial growth factor [ 57593]  (1)
  Hepatitis B viral capsid (hbcag) [ 47852]  (1)
  Hepatitis C virus N-terminal capsid protein fragment 2-45 [ 58668]  (1)
  Her-1 [ 110014]  (1)
  Hermes dimerisation domain [ 140996]  (1)
  Herpes virus serine proteinase, assemblin [ 50789]  (1)
  HesB-like domain [ 89360]  (1)
  Heterotrimerisation domain of extracellular hemoglobin linker subunits [ 144276]  (1)
  HisI-like [ 141734]  (1)
  Histone H3 C-terminal fragment 130-135 [ 58713]  (1)
  Histone H3 K4-specific methyltransferase SET7/9 N-terminal domain [ 82185]  (1)
  HlyD-like secretion proteins [ 111369]  (1)
  Holliday junction resolvase RusA [ 103084]  (1)
  Homo-oligomeric flavin-containing Cys decarboxylases, HFCD [ 52507]  (1)
  Homocysteine S-methyltransferase [ 82282]  (1)
  Homodimeric domain of signal transducing histidine kinase [ 47384]  (1)
  Hook domain [ 116907]  (1)
  Hormone receptor domain [ 111418]  (1)
  Hsp33 domain [ 64397]  (1)
  Hsp90 co-chaperone CDC37 [ 101391]  (1)
  Htr2 transmembrane domain-like [ 158212]  (1)
  Human glutathione reductase (HGR) inhibitor [ 58703]  (1)
  HupF/HypC-like [ 159127]  (1)
  Hut operon positive regulatory protein HutP [ 111064]  (1)
  Hyaluronate lyase-like, C-terminal domain [ 49863]  (1)
  Hyaluronidase post-catalytic domain-like [ 140657]  (1)
  Hybrid and chimeric proteins [ 58790]  (1)
  Hydrophobin II, HfbII [ 101751]  (1)
  Hypothetical membrane protein Ta0354, soluble domain [ 116858]  (1)
  Hypothetical protein AF0491, middle domain [ 109728]  (1)
  Hypothetical protein At3g22680 [ 109920]  (1)
  Hypothetical protein D-63 [ 109801]  (1)
  Hypothetical protein HI1480 [ 103277]  (1)
  Hypothetical protein MG354 [ 110009]  (1)
  Hypothetical protein MPN330 [ 116965]  (1)
  Hypothetical protein MTH1184 [ 57821]  (1)
  Hypothetical protein MTH1880 [ 75412]  (1)
  Hypothetical protein MTH393 [ 101332]  (1)
  Hypothetical protein MTH538 [ 52206]  (1)
  Hypothetical protein MTH677 [ 110783]  (1)
  Hypothetical protein MTH777 (MT0777) [ 75181]  (1)
  Hypothetical protein MTH865 [ 69025]  (1)
  Hypothetical protein PA1324 [ 117074]  (1)
  Hypothetical protein PF0899 [ 111057]  (1)
  Hypothetical protein PH1602 [ 103365]  (1)
  Hypothetical protein SAV1430 [ 110836]  (1)
  Hypothetical protein ST1625 [ 101424]  (1)
  Hypothetical protein TM0160 [ 103256]  (1)
  Hypothetical protein TM0875 [ 90064]  (1)
  Hypothetical protein TM1070 [ 89232]  (1)
  Hypothetical protein TT1725 [ 103007]  (1)
  Hypothetical protein Ta0289 C-terminal domain [ 103623]  (1)
  Hypothetical protein Ta1206 [ 102891]  (1)
  Hypothetical protein VC0424 [ 89946]  (1)
  Hypothetical protein YfhH [ 101697]  (1)
  Hypothetical protein YgiW [ 101756]  (1)
  Hypothetical protein YhaI [ 109915]  (1)
  Hypothetical protein YjbJ [ 69047]  (1)
  Hypothetical protein YjiA, C-terminal domain [ 90002]  (1)
  Hypothetical protein Yml108w [ 89975]  (1)
  Hypothetical protein YoaG [ 103063]  (1)
  Hypothetical protein YojF [ 89442]  (1)
  Hypothetical protein YqbG [ 116915]  (1)
  Hypothetical protein YwqG [ 103032]  (1)
  Hypothetical protein c14orf129, hspc210 [ 103107]  (1)
  Hypothetical protein yfbM [ 111069]  (1)
  helix-turn-helix motif [ 58878]  (1)

I

SuperfamilyDescription [Sunid] (#Children)
Prefixed with I   Isocitrate/Isopropylmalate dehydrogenase-like [ 53659]  (5)
  Immunoglobulin [ 48726]  (4)
  ISP domain [ 50022]  (3)
  ITPase-like [ 52972]  (3)
  IHF-like DNA-binding proteins [ 47729]  (2)
  Indolic compounds 2,3-dioxygenase-like [ 140959]  (2)
  Insect toxins [ 58400]  (2)
  Invertebrate chitin-binding proteins [ 57625]  (2)
  2-isopropylmalate synthase LeuA, allosteric (dimerisation) domain [ 110921]  (1)
  I/LWEQ domain [ 109885]  (1)
  ICP-like [ 141066]  (1)
  IFN mimetic syr6 [ 75780]  (1)
  IL-1 receptor type 1 antagonist peptide AF10847 [ 58898]  (1)
  IP3 receptor type 1 binding core, domain 2 [ 100909]  (1)
  ISP transmembrane anchor [ 81502]  (1)
  ISY1 domain-like [ 140102]  (1)
  IVS-encoded protein-like [ 158446]  (1)
  Ilarvirus coat protein N-terminal fragment [ 118396]  (1)
  IlvD/EDD N-terminal domain-like [ 143975]  (1)
  ImmE5-like [ 143469]  (1)
  Immunodominant region of protein G of BRSV [ 58508]  (1)
  Immunoglobulin-binding domains [ 54358]  (1)
  Immunoreceptor tyrosine kinase activation motif, ITAM [ 58693]  (1)
  ImpE-like [ 144059]  (1)
  In vitro evolution products [ 103780]  (1)
  Inactivation gate of potassium and sodium channels [ 58359]  (1)
  Indigoidine synthase A-like [ 110581]  (1)
  Influenza hemagglutinin (stalk) [ 58064]  (1)
  Influenza hemagglutinin fragments [ 64632]  (1)
  Influenza virus matrix protein M1 [ 48145]  (1)
  Inhibitor of apoptosis (IAP) repeat [ 57924]  (1)
  Inhibitor of mammalian ribonucleotide reductase [ 58926]  (1)
  Inhibitor of vertebrate lysozyme, Ivy [ 89872]  (1)
  Initiation factor IF2/eIF5b, domain 3 [ 52156]  (1)
  Inorganic pyrophosphatase [ 50324]  (1)
  Inosine monophosphate dehydrogenase (IMPDH) [ 51412]  (1)
  Inovirus (filamentous phage) major coat protein [ 57987]  (1)
  Insect cysteine-rich antifreeze protein [ 51156]  (1)
  Insect pheromone/odorant-binding proteins [ 47565]  (1)
  Insert subdomain of RNA polymerase alpha subunit [ 56553]  (1)
  Insulin-like [ 56994]  (1)
  Integrin alpha N-terminal domain [ 69318]  (1)
  Integrin beta tail domain [ 69687]  (1)
  Integrin domains [ 69179]  (1)
  Integrin fragments [ 58698]  (1)
  Integrin-binding RGD peptide [ 64683]  (1)
  Interferon-induced guanylate-binding protein 1 (GBP1), C-terminal domain [ 48340]  (1)
  Interleukin 8-like chemokines [ 54117]  (1)
  Intermediate filament protein, coiled coil region [ 64593]  (1)
  Invasin/intimin cell-adhesion fragments [ 49373]  (1)
  Invasion protein A (SipA) , C-terminal actin binding domain [ 101312]  (1)
  IpaD-like [ 140693]  (1)
  IpsF-like [ 69765]  (1)
  Iron-dependent repressor protein, dimerization domain [ 47979]  (1)
  Iron-sulfur subunit of formate dehydrogenase N, transmembrane anchor [ 81597]  (1)
  IscX-like [ 140319]  (1)
  Isochorismatase-like hydrolases [ 52499]  (1)
  Isolated insulin B-chain [ 58774]  (1)

J

SuperfamilyDescription [Sunid] (#Children)
Prefixed with J   JAB1/MPN domain [ 102712]  (1)
  Jann2411-like [ 160904]  (1)
  Jann4075-like [ 158587]  (1)

L

SuperfamilyDescription [Sunid] (#Children)
Prefixed with L   lambda repressor-like DNA-binding domains [ 47413]  (13)
  Lysozyme-like [ 53955]  (11)
  Lipocalins [ 50814]  (9)
  L domain-like [ 52058]  (8)
  LigT-like [ 55144]  (4)
  L30e-like [ 55315]  (3)
  Lantibiotic peptides [ 58244]  (3)
  LeuD/IlvD-like [ 52016]  (3)
  Ligand-binding domain in the NO signalling and Golgi transport [ 111126]  (3)
  Lipase/lipooxygenase domain (PLAT/LH2 domain) [ 49723]  (3)
  L-aspartase-like [ 48557]  (2)
  L28p-like [ 143800]  (2)
  L9 N-domain-like [ 55658]  (2)
  LDH C-terminal domain-like [ 56327]  (2)
  Leech antihemostatic proteins [ 57262]  (2)
  Leukocidin-like [ 56959]  (2)
  LexA/Signal peptidase [ 51306]  (2)
  Lipoxigenase [ 48484]  (2)
  LuxS/MPP-like metallohydrolase [ 63411]  (2)
  L,D-transpeptidase catalytic domain-like [ 141523]  (1)
  L,D-transpeptidase pre-catalytic domain-like [ 143985]  (1)
  L-A virus major coat protein [ 82856]  (1)
  L-sulfolactate dehydrogenase-like [ 89733]  (1)
  L21p-like [ 141091]  (1)
  L27 domain [ 101288]  (1)
  L35p-like [ 143034]  (1)
  LCCL domain [ 69848]  (1)
  LD-carboxypeptidase A C-terminal domain-like [ 141986]  (1)
  LDL receptor-like module [ 57424]  (1)
  LEA14-like [ 117070]  (1)
  LEM domain [ 63451]  (1)
  Lag-3 N-terminal region [ 158851]  (1)
  Lamin A/C globular tail domain [ 74853]  (1)
  LanC-like [ 158745]  (1)
  LemA-like [ 140478]  (1)
  Lesion bypass DNA polymerase (Y-family), little finger domain [ 100879]  (1)
  Leucine zipper domain [ 57959]  (1)
  Leucocin-like bacteriocin [ 100899]  (1)
  Leukotriene A4 hydrolase N-terminal domain [ 63737]  (1)
  LigA subunit of an aromatic-ring-opening dioxygenase LigAB [ 48076]  (1)
  LigB-like [ 53213]  (1)
  Light-harvesting complex subunits [ 56918]  (1)
  Lipase chaperone-like [ 158855]  (1)
  Liposaccharide-binding protein CAP18 (residues 106-137) [ 58390]  (1)
  Lipovitellin-phosvitin complex, superhelical domain [ 48431]  (1)
  Lipovitellin-phosvitin complex; beta-sheet shell regions [ 56968]  (1)
  Lissencephaly-1 protein (Lis-1, PAF-AH alpha) N-terminal domain [ 109925]  (1)
  LmbE-like [ 102588]  (1)
  Lp2179-like [ 160800]  (1)
  Lumazine synthase [ 52121]  (1)
  LysM domain [ 54106]  (1)
  lambda integrase-like, N-terminal domain [ 47823]  (1)

M

SuperfamilyDescription [Sunid] (#Children)
Prefixed with M   Metallo-dependent hydrolases [ 51556]  (18)
  Metalloproteases ("zincins"), catalytic domain [ 55486]  (17)
  Metallo-hydrolase/oxidoreductase [ 56281]  (14)
  Metallo-dependent phosphatases [ 56300]  (12)
  MoaD/ThiS [ 54285]  (4)
  Mog1p/PsbP-like [ 55724]  (4)
  Mss4-like [ 51316]  (4)
  MOP-like [ 50331]  (3)
  Methylglyoxal synthase-like [ 52335]  (3)
  Microbial ribonucleases [ 53933]  (3)
  Multiheme cytochromes [ 48695]  (3)
  MCP/YpsA-like [ 102405]  (2)
  MFS general substrate transporter [ 103473]  (2)
  MTH1187/YkoF-like [ 89957]  (2)
  Macro domain-like [ 52949]  (2)
  Macrocyclic bacteriocins [ 58279]  (2)
  Mediator hinge subcomplex-like [ 140718]  (2)
  Membrane ion channel-forming peptide antibiotics containing D-aminoacids [ 58233]  (2)
  Methionine synthase activation domain-like [ 56507]  (2)
  Methyl-coenzyme M reductase subunits [ 55088]  (2)
  Midkine [ 57288]  (2)
  Molybdenum cofactor biosynthesis proteins [ 53218]  (2)
  MurD-like peptide ligases, catalytic domain [ 53623]  (2)
  MurD-like peptide ligases, peptide-binding domain [ 53244]  (2)
  2-methylcitrate dehydratase PrpD [ 103378]  (1)
  MAD protein fragments [ 111529]  (1)
  MAL13P1.257-like [ 141678]  (1)
  MAPEG domain-like [ 161084]  (1)
  MAST3 pre-PK domain-like [ 140482]  (1)
  MFPT repeat-like [ 141739]  (1)
  MG296-like [ 158715]  (1)
  MHC antigen-recognition domain [ 54452]  (1)
  MIR domain [ 82109]  (1)
  MIT domain [ 116846]  (1)
  MIT domain-like [ 140361]  (1)
  MK0786-like [ 143560]  (1)
  MM3350-like [ 159941]  (1)
  MOSC N-terminal domain-like [ 141673]  (1)
  MPN010-like [ 144266]  (1)
  MTH1598-like [ 69819]  (1)
  MTH889-like [ 160363]  (1)
  MTH938-like [ 64076]  (1)
  MW0975(SA0943)-like [ 140423]  (1)
  Magnesium transport protein CorA, transmembrane region [ 144083]  (1)
  Mago nashi protein [ 89817]  (1)
  Major capsid protein VP5 [ 103417]  (1)
  Major capsid protein gp5 [ 56563]  (1)
  Major surface antigen p30, SAG1 [ 74877]  (1)
  MalF N-terminal region-like [ 160964]  (1)
  Malate synthase G [ 51645]  (1)
  Mannose 6-phosphate receptor domain [ 50911]  (1)
  Mannose-6-phosphate receptor binding protein 1 (Tip47), C-terminal domain [ 109775]  (1)
  Mannose-binding lectins [ 51101]  (1)
  Marinostatin, MstI [ 103764]  (1)
  MbtH-like [ 160582]  (1)
  Mechanosensitive channel protein MscS (YggB), C-terminal domain [ 82689]  (1)
  Mechanosensitive channel protein MscS (YggB), transmembrane region [ 82861]  (1)
  Membrane ion ATPase [ 82941]  (1)
  Membrane penetration protein mu1 [ 69908]  (1)
  Membrane-bound antimicrobial peptides [ 58443]  (1)
  MesJ substrate recognition domain-like [ 82829]  (1)
  MetI-like [ 161098]  (1)
  Metal cation-transporting ATPase, ATP-binding domain N [ 81660]  (1)
  Metal-binding peptide from MerP [ 103759]  (1)
  Metalloporphyrin-binding designed peptides [ 90315]  (1)
  Metallothionein [ 57868]  (1)
  Methane monooxygenase hydrolase, gamma subunit [ 47152]  (1)
  Methanol dehydrogenase subunit [ 48666]  (1)
  Methenyltetrahydrofolate cyclohydrolase-like [ 101262]  (1)
  Methenyltetrahydromethanopterin cyclohydrolase [ 56199]  (1)
  Methionine synthase domain [ 47644]  (1)
  Methionyl-tRNA synthetase (MetRS), Zn-domain [ 57770]  (1)
  Methuselah ectodomain [ 63877]  (1)
  Methyl-accepting chemotaxis protein (MCP) signaling domain [ 58104]  (1)
  Methyl-coenzyme M reductase alpha and beta chain C-terminal domain [ 48081]  (1)
  Methylamine dehydrogenase, L chain [ 57561]  (1)
  Methylated DNA-protein cysteine methyltransferase domain [ 53155]  (1)
  Methylated DNA-protein cysteine methyltransferase, C-terminal domain [ 46767]  (1)
  Methylesterase CheB, C-terminal domain [ 52738]  (1)
  MgtE N-terminal domain-like [ 158791]  (1)
  MgtE membrane domain-like [ 161093]  (1)
  Mib/herc2 domain-like [ 159034]  (1)
  Microbial and mitochondrial ADK, insert "zinc finger" domain [ 57774]  (1)
  Microcin leader peptide [ 58564]  (1)
  Microtubule complexes [ 58194]  (1)
  Mini-collagen I, C-terminal domain [ 103589]  (1)
  Mitochondrial ATP synthase coupling factor 6 [ 111357]  (1)
  Mitochondrial carrier [ 103506]  (1)
  Mitochondrial cytochrome c oxidase subunit IV [ 81406]  (1)
  Mitochondrial cytochrome c oxidase subunit VIIIb (aka IX) [ 81431]  (1)
  Mitochondrial cytochrome c oxidase subunit VIIa [ 81419]  (1)
  Mitochondrial cytochrome c oxidase subunit VIIb [ 81423]  (1)
  Mitochondrial cytochrome c oxidase subunit VIIc (aka VIIIa) [ 81427]  (1)
  Mitochondrial cytochrome c oxidase subunit VIa [ 81411]  (1)
  Mitochondrial cytochrome c oxidase subunit VIc [ 81415]  (1)
  Mitochondrial glycoprotein MAM33-like [ 54529]  (1)
  Mitochondrial import receptor subunit Tom20 [ 47157]  (1)
  Mitotic arrest deficient-like 1, Mad1 [ 75704]  (1)
  MoaD-related protein, C-terminal domain [ 103239]  (1)
  Mob1/phocein [ 101152]  (1)
  MoeA C-terminal domain-like [ 63867]  (1)
  MoeA N-terminal region -like [ 63882]  (1)
  Moesin tail domain [ 48678]  (1)
  Mollusk pheromone [ 90183]  (1)
  Molybdenum cofactor biosynthesis protein C, MoaC [ 55040]  (1)
  Molybdenum cofactor-binding domain [ 56003]  (1)
  Molybdopterin synthase subunit MoaE [ 54690]  (1)
  Monomethylamine methyltransferase MtmB [ 75098]  (1)
  Monooxygenase (hydroxylase) regulatory protein [ 56029]  (1)
  MtlR-like [ 158668]  (1)
  MukF C-terminal domain-like [ 140570]  (1)
  Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains [ 82714]  (1)
  Multidrug efflux transporter AcrB pore domain; PN1, PN2, PC1 and PC2 subdomains [ 82693]  (1)
  Multidrug efflux transporter AcrB transmembrane domain [ 82866]  (1)
  Multidrug resistance ABC transporter [ 64607]  (1)
  Multidrug resistance efflux transporter EmrE [ 103481]  (1)
  Multimerization domain of the phosphoprotein from sendai virus [ 58034]  (1)
  MurCD N-terminal domain [ 51984]  (1)
  MurE/MurF N-terminal domain [ 63418]  (1)
  Muscle protein complexes [ 64617]  (1)
  MxiH-like [ 140129]  (1)
  Myosin S1 fragment, N-terminal domain [ 50084]  (1)
  Myosin phosphatase inhibitor 17kDa protein, CPI-17 [ 81790]  (1)
  Myosin rod fragments [ 90257]  (1)
  mRNA decapping enzyme DcpS N-terminal domain [ 102860]  (1)
  mu transposase, C-terminal domain [ 50610]  (1)

N

SuperfamilyDescription [Sunid] (#Children)
Prefixed with N   NTF2-like [ 54427]  (30)
  Nucleotide-diphospho-sugar transferases [ 53448]  (19)
  Nucleic acid-binding proteins [ 50249]  (16)
  Nucleotidyltransferase [ 81301]  (14)
  NAD(P)-binding Rossmann-fold domains [ 51735]  (12)
  NagB/RpiA/CoA transferase-like [ 100950]  (8)
  N-terminal nucleophile aminohydrolases (Ntn hydrolases) [ 56235]  (7)
  Nudix [ 55811]  (7)
  Nucleotidylyl transferase [ 52374]  (5)
  Nucleotidyltransferase substrate binding subunit/domain [ 81593]  (4)
  N-(deoxy)ribosyltransferase-like [ 52309]  (3)
  Non-globular alpha+beta subunits of globular proteins [ 56568]  (3)
  Nucleotide-binding domain [ 51971]  (3)
  NusB-like [ 48013]  (3)
  NAD kinase/diacylglycerol kinase-like [ 111331]  (2)
  Nicotinate/Quinolinate PRTase C-terminal domain-like [ 51690]  (2)
  Nicotinate/Quinolinate PRTase N-terminal domain-like [ 54675]  (2)
  Nitrite/Sulfite reductase N-terminal domain-like [ 55124]  (2)
  Nitrogenase accessory factor-like [ 53146]  (2)
  NosL/MerB-like [ 160387]  (2)
  Nucleocapsid protein dimerization domain [ 103068]  (2)
  Nucleotide cyclase [ 55073]  (2)
  5'-nucleotidase (syn. UDP-sugar hydrolase), C-terminal domain [ 55816]  (1)
  N-acetylmuramoyl-L-alanine amidase-like [ 55846]  (1)
  N-terminal Zn binding domain of HIV integrase [ 46919]  (1)
  N-terminal coiled coil domain from apc [ 58050]  (1)
  N-terminal domain of DnaB helicase [ 48024]  (1)
  N-terminal domain of MutM-like DNA repair proteins [ 81624]  (1)
  N-terminal domain of adenylylcyclase associated protein, CAP [ 101278]  (1)
  N-terminal domain of alpha and beta subunits of F1 ATP synthase [ 50615]  (1)
  N-terminal domain of bifunctional PutA protein [ 81935]  (1)
  N-terminal domain of cbl (N-cbl) [ 47668]  (1)
  N-terminal domain of eukaryotic peptide chain release factor subunit 1, ERF1 [ 55481]  (1)
  N-terminal domain of the delta subunit of the F1F0-ATP synthase [ 47928]  (1)
  N-terminal domains of the minor coat protein g3p [ 50176]  (1)
  N-terminal fragment of gastric H/K-ATPase [ 82998]  (1)
  N-terminal hairpin of ubiquitin (residues 1-17) [ 58779]  (1)
  N-terminal, cytoplasmic domain of anti-sigmaE factor RseA [ 89069]  (1)
  N-terminal, heterodimerisation domain of RBP7 (RpoE) [ 88798]  (1)
  N-utilization substance G protein NusG, N-terminal domain [ 82679]  (1)
  N-utilization substance G protein NusG, insert domain [ 82004]  (1)
  N5-CAIR mutase (phosphoribosylaminoimidazole carboxylase, PurE) [ 52255]  (1)
  NAC domain [ 101941]  (1)
  NAD(P)-linked oxidoreductase [ 51430]  (1)
  NAD-binding domain of HMG-CoA reductase [ 55035]  (1)
  NADH pyrophosphatase intervening domain [ 116738]  (1)
  NAP-like [ 143113]  (1)
  NE0471 N-terminal domain-like [ 143880]  (1)
  NE1680-like [ 160766]  (1)
  NEAT domain-like [ 158911]  (1)
  NHL repeat [ 101898]  (1)
  NIF3 (NGG1p interacting factor 3)-like [ 102705]  (1)
  NMB0488-like [ 160207]  (1)
  NMB0513-like [ 160472]  (1)
  NOB1 zinc finger-like [ 144206]  (1)
  NRDP1 C-terminal domain-like [ 160088]  (1)
  NSFL1 (p97 ATPase) cofactor p47, SEP domain [ 102848]  (1)
  NSP3 homodimer [ 69903]  (1)
  NSP3A-like [ 159936]  (1)
  NTR, cyclotide processing element [ 111517]  (1)
  NadA-like [ 142754]  (1)
  NblA-like [ 109859]  (1)
  Necrosis inducing protein 1, NIP1 [ 103580]  (1)
  Neurophysin II [ 49606]  (1)
  Neurotoxin B-IV [ 57011]  (1)
  Neurotoxin III (ATX III) [ 57419]  (1)
  Neurotransmitter-gated ion-channel transmembrane pore [ 90112]  (1)
  New fold designs [ 103775]  (1)
  NfeD domain-like [ 141322]  (1)
  Nickel-containing superoxide dismutase, NiSOD [ 109770]  (1)
  Nicotinate mononucleotide:5,6-dimethylbenzimidazole phosphoribosyltransferase (CobT) [ 52733]  (1)
  Nicotinic receptor ligand binding domain-like [ 63712]  (1)
  NifT/FixU-like [ 159203]  (1)
  NinB [ 103370]  (1)
  Nitric oxide (NO) synthase oxygenase domain [ 56512]  (1)
  Nitrile hydratase alpha chain [ 56209]  (1)
  Nitrite and sulphite reductase 4Fe-4S domain-like [ 56014]  (1)
  Nitrous oxide reductase, N-terminal domain [ 50974]  (1)
  Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) [ 81531]  (1)
  Nonstructural protein ns2, Nep, M1-binding domain [ 101156]  (1)
  Nop domain [ 89124]  (1)
  Nop10-like SnoRNP [ 144210]  (1)
  Notch domain [ 90193]  (1)
  Nqo1 FMN-binding domain-like [ 142019]  (1)
  Nqo1 middle domain-like [ 142984]  (1)
  Nqo1C-terminal domain-like [ 140490]  (1)
  Nqo5-like [ 143243]  (1)
  Ns1 effector domain-like [ 143021]  (1)
  Nuclear receptor coactivator Src-1 [ 48682]  (1)
  Nuclear receptor coactivator interlocking domain [ 69125]  (1)
  Nuclear receptor ligand-binding domain [ 48508]  (1)
  Nuclease A inhibitor (NuiA) [ 82602]  (1)
  Nucleoplasmin-like core domain [ 69203]  (1)
  Nucleoporin domain [ 117289]  (1)
  Nucleoside diphosphate kinase, NDK [ 54919]  (1)
  Nucleoside hydrolase [ 53590]  (1)
  Nucleoside phosphorylase/phosphoribosyltransferase N-terminal domain [ 47648]  (1)
  Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain [ 52418]  (1)

O

SuperfamilyDescription [Sunid] (#Children)
Prefixed with O   Origin of replication-binding domain, RBD-like [ 55464]  (5)
  omega toxin-like [ 57059]  (5)
  OMPA-like [ 56925]  (4)
  OMPT-like [ 69917]  (2)
  OsmC-like [ 82784]  (2)
  ORC1-binding domain [ 144005]  (1)
  Obg GTP-binding protein C-terminal domain [ 102741]  (1)
  Obg GTP-binding protein N-terminal domain [ 82051]  (1)
  Octreotide (Sandostatine), a somatostatine analogue [ 58903]  (1)
  Olfactory marker protein [ 63697]  (1)
  Oligomerization domain of hepatitis delta antigen [ 58108]  (1)
  Oligosaccharyltransferase subunit ost4p [ 103464]  (1)
  Oligoxyloglucan reducing end-specific cellobiohydrolase [ 110296]  (1)
  OmpA-like [ 103088]  (1)
  OmpH-like [ 111384]  (1)
  Oncogene products [ 50904]  (1)
  Orange carotenoid protein, N-terminal domain [ 81930]  (1)
  Orange domain-like [ 158457]  (1)
  Ornithine decarboxylase C-terminal domain [ 55904]  (1)
  Osmotin, thaumatin-like protein [ 49870]  (1)
  Outer arm dynein light chain 1 [ 52075]  (1)
  Outer capsid protein sigma 3 [ 64465]  (1)
  Outer membrane efflux proteins (OEP) [ 56954]  (1)
  Outer membrane lipoprotein [ 58042]  (1)
  Outer membrane phospholipase A (OMPLA) [ 56931]  (1)
  Outer surface protein [ 51087]  (1)
  Outer surface protein C (OspC) [ 63515]  (1)
  Oxidoreductase molybdopterin-binding domain [ 56524]  (1)
  Oxygen-evolving enhancer protein 3, [ 101112]  (1)
  Oxysterol-binding protein-like [ 144000]  (1)
  occludin/ELL-like [ 144292]  (1)

P

SuperfamilyDescription [Sunid] (#Children)
Prefixed with P   P-loop containing nucleoside triphosphate hydrolases [ 52540]  (24)
  PH domain-like [ 50729]  (13)
  PUA domain-like [ 88697]  (13)
  6-phosphogluconate dehydrogenase C-terminal domain-like [ 48179]  (12)
  Pectin lyase-like [ 51126]  (11)
  PLP-dependent transferases [ 53383]  (9)
  Positive stranded ssRNA viruses [ 88633]  (9)
  PreATP-grasp domain [ 52440]  (8)
  PYP-like sensor domain (PAS domain) [ 55785]  (7)
  Pentein [ 55909]  (7)
  Phosphoenolpyruvate/pyruvate domain [ 51621]  (7)
  Pili subunits [ 54523]  (7)
  Protein kinase-like (PK-like) [ 56112]  (7)
  Putative DNA-binding domain [ 46955]  (7)
  p53-like transcription factors [ 49417]  (7)
  PDZ domain-like [ 50156]  (6)
  (Phosphotyrosine protein) phosphatases II [ 52799]  (5)
  PAP/OAS1 substrate-binding domain [ 81631]  (5)
  PFL-like glycyl radical enzymes [ 51998]  (5)
  Phage fibre proteins [ 69349]  (5)
  Phospholipase D/nuclease [ 56024]  (5)
  Pre-PUA domain [ 88802]  (5)
  PRC-barrel domain [ 50346]  (4)
  ParB/Sulfiredoxin [ 110849]  (4)
  Porins [ 56935]  (4)
  PriA/YqbF domain [ 160059]  (4)
  Probable bacterial effector-binding domain [ 55136]  (4)
  Prokaryotic SH3-related domain [ 82057]  (4)
  Pseudouridine synthase [ 55120]  (4)
  PLC-like phosphodiesterases [ 51695]  (3)
  Periplasmic binding protein-like II [ 53850]  (3)
  Phage tail proteins [ 69279]  (3)
  Phosphoglycerate mutase-like [ 53254]  (3)
  Phospholipase A2, PLA2 [ 48619]  (3)
  Prim-pol domain [ 56747]  (3)
  Prismane protein-like [ 56821]  (3)
  Prokaryotic lipoproteins and lipoprotein localization factors [ 89392]  (3)
  Protease propeptides/inhibitors [ 54897]  (3)
  4'-phosphopantetheinyl transferase [ 56214]  (2)
  PAP/Archaeal CCA-adding enzyme, C-terminal domain [ 55003]  (2)
  PE/PPE dimer-like [ 140459]  (2)
  PEBP-like [ 49777]  (2)
  PEP carboxykinase-like [ 53795]  (2)
  PGBD-like [ 47090]  (2)
  PHM/PNGase F [ 49742]  (2)
  PHP domain-like [ 89550]  (2)
  PHP14-like [ 143724]  (2)
  PIN domain-like [ 88723]  (2)
  PK C-terminal domain-like [ 52935]  (2)
  PK beta-barrel domain-like [ 50800]  (2)
  PLP-binding barrel [ 51419]  (2)
  POZ domain [ 54695]  (2)
  PRTase-like [ 53271]  (2)
  PTS system IIB component-like [ 52794]  (2)
  PTS system fructose IIA component-like [ 53062]  (2)
  PapD-like [ 49354]  (2)
  Penicillin-binding protein associated domain [ 69189]  (2)
  Peptidase/esterase 'gauge' domain [ 50993]  (2)
  Phage tail protein-like [ 143749]  (2)
  PheT/TilS domain [ 56037]  (2)
  Phoshotransferase/anion transport protein [ 55804]  (2)
  Phosphohistidine domain [ 52009]  (2)
  Phospholipase C/P1 nuclease [ 48537]  (2)
  PilZ domain-like [ 141371]  (2)
  Plant lectins/antimicrobial peptides [ 57016]  (2)
  Polo-box domain [ 82615]  (2)
  PsbU/PolX domain-like [ 81585]  (2)
  PurS-like [ 82697]  (2)
  Pyruvoyl-dependent histidine and arginine decarboxylases [ 56271]  (2)
  post-AAA+ oligomerization domain-like [ 48019]  (2)
  post-HMGL domain-like [ 89000]  (2)
  14-3-3 protein [ 48445]  (1)
  P-domain of calnexin/calreticulin [ 63887]  (1)
  P27(KIP1) fragment 22-106 [ 58673]  (1)
  P40 nucleoprotein [ 101399]  (1)
  PA domain [ 52025]  (1)
  PA1123-like [ 160477]  (1)
  PA1994-like [ 159275]  (1)
  PA2021-like [ 141447]  (1)
  PA2201 C-terminal domain-like [ 140731]  (1)
  PA2201 N-terminal domain-like [ 140486]  (1)
  PABC (PABP) domain [ 63570]  (1)
  PAH2 domain [ 47762]  (1)
  PAZ domain [ 101690]  (1)
  PB2 C-terminal domain-like [ 160453]  (1)
  PCD-like [ 55248]  (1)
  PEP carboxykinase N-terminal domain [ 68923]  (1)
  PF0523-like [ 143870]  (1)
  PG0775 C-terminal domain-like [ 158494]  (1)
  PG0816-like [ 140753]  (1)
  PG1388-like [ 160925]  (1)
  PG1857-like [ 160448]  (1)
  PH0156-like [ 160945]  (1)
  PH0987 N-terminal domain-like [ 160467]  (1)
  PH1570-like [ 159902]  (1)
  PHL pollen allergen [ 49590]  (1)
  PKD domain [ 49299]  (1)
  PMP inhibitors [ 57283]  (1)
  PMT central region-like [ 158842]  (1)
  PP2C-like [ 81606]  (1)
  PPK N-terminal domain-like [ 140356]  (1)
  PR-1-like [ 55797]  (1)
  PRP4-like [ 158230]  (1)
  PSP1-like [ 58313]  (1)
  PSPTO4464-like [ 158710]  (1)
  PSTPO5379-like [ 160920]  (1)
  PTPA-like [ 140984]  (1)
  PTS IIb component [ 52728]  (1)
  PTS-regulatory domain, PRD [ 63520]  (1)
  PTSIIA/GutA-like [ 141530]  (1)
  PUG domain-like [ 143503]  (1)
  PW2, a tryptophan-rich anticocidial peptide [ 75797]  (1)
  PWI domain [ 101233]  (1)
  PX domain [ 64268]  (1)
  Papillomavirus e6-interacting peptide of e6ap [ 58769]  (1)
  Parathyroid hormone fragments (residues between 1 and 39) [ 58379]  (1)
  Penaeidin-3a [ 103727]  (1)
  Penicillin binding protein dimerisation domain [ 56519]  (1)
  Penicillin-binding protein 2x (pbp-2x), c-terminal domain [ 54184]  (1)
  Pentapeptide repeat-like [ 141571]  (1)
  Pepsin inhibitor-3 [ 55149]  (1)
  Peptide antagonists of IGF-1 [ 64688]  (1)
  Peptide deformylase [ 56420]  (1)
  Peptide derived from p-21 activated kinase [ 58723]  (1)
  Peptide f (amphiphilic octadecapeptide) [ 58847]  (1)
  Peptide hormones [ 58284]  (1)
  Peptide methionine sulfoxide reductase [ 55068]  (1)
  Peptidoglycan deacetylase N-terminal noncatalytic region [ 144015]  (1)
  Peptidyl-tRNA hydrolase II [ 102462]  (1)
  Peptidyl-tRNA hydrolase domain-like [ 110916]  (1)
  Peptidyl-tRNA hydrolase-like [ 53178]  (1)
  Peptidylarginine deiminase Pad4, middle domain [ 110083]  (1)
  Perfringolysin [ 56978]  (1)
  Peridinin-chlorophyll protein [ 48608]  (1)
  Peripheral subunit-binding domain of 2-oxo acid dehydrogenase complex [ 47005]  (1)
  Periplasmic binding protein-like I [ 53822]  (1)
  Periplasmic chaperone C-domain [ 49584]  (1)
  PetG subunit of the cytochrome b6f complex [ 103446]  (1)
  PetL subunit of the cytochrome b6f complex [ 103436]  (1)
  PetM subunit of the cytochrome b6f complex [ 103441]  (1)
  PetN subunit of the cytochrome b6f complex [ 103451]  (1)
  Phage replication organizer domain [ 140713]  (1)
  Phase 1 flagellin [ 64518]  (1)
  Phenylalanine zipper [ 109805]  (1)
  Pheromone ER-23 [ 69964]  (1)
  Pheromone-binding domain of LuxR-like quorum-sensing transcription factors [ 75516]  (1)
  PhnH-like [ 159709]  (1)
  PhoU-like [ 109755]  (1)
  Phosphocholine cytidylyltransferase membrane-binding peptides [ 58374]  (1)
  Phosphofructokinase [ 53784]  (1)
  Phosphoglucomutase, C-terminal domain [ 55957]  (1)
  Phosphoglucomutase, first 3 domains [ 53738]  (1)
  Phosphoglycerate kinase [ 53748]  (1)
  Phospholamban fragments [ 58569]  (1)
  Phosphoprotein M1, C-terminal domain [ 118173]  (1)
  Phosphoprotein XD domain [ 101089]  (1)
  Phosphoprotein oligomerization domain-like [ 160892]  (1)
  Phosphotyrosine protein phosphatases I [ 52788]  (1)
  Photosystem I reaction center subunit X, PsaK [ 81563]  (1)
  Photosystem I reaction center subunit XI, PsaL [ 81568]  (1)
  Photosystem I subunit PsaD [ 64234]  (1)
  Photosystem I subunits PsaA/PsaB [ 81558]  (1)
  Photosystem II 10 kDa phosphoprotein PsbH [ 161025]  (1)
  Photosystem II antenna protein-like [ 161077]  (1)
  Photosystem II reaction center protein I, PsbI [ 161041]  (1)
  Photosystem II reaction center protein J, PsbJ [ 161021]  (1)
  Photosystem II reaction center protein K, PsbK [ 161037]  (1)
  Photosystem II reaction center protein L, PsbL [ 161017]  (1)
  Photosystem II reaction center protein M, PsbM [ 161033]  (1)
  Photosystem II reaction center protein T, PsbT [ 161029]  (1)
  Photosystem II reaction centre subunit H, transmembrane region [ 81490]  (1)
  Photosystems [ 58156]  (1)
  PhtA domain-like [ 142887]  (1)
  Pilin fragments [ 58421]  (1)
  Pituitary adenylate cyclase activating polypeptide, pacap21 [ 64644]  (1)
  Plakin repeat [ 75399]  (1)
  Plant inhibitors of proteinases and amylases [ 57027]  (1)
  Plant invertase/pectin methylesterase inhibitor [ 101148]  (1)
  Plant proteinase inhibitors [ 100897]  (1)
  Plasmid maintenance system epsilon/zeta, antidote epsilon subunit [ 81710]  (1)
  Plexin repeat [ 103575]  (1)
  Plus3-like [ 159042]  (1)
  Pollen allergen ole e 6 [ 111388]  (1)
  Poly A polymerase C-terminal region-like [ 81891]  (1)
  Poly(A) polymerase catalytic subunit-like [ 160957]  (1)
  Polymorphic antigen SPAM-H1 (residues 90-127) [ 58395]  (1)
  Polynucleotide phosphorylase/guanosine pentaphosphate synthase (PNPase/GPSI), domain 3 [ 46915]  (1)
  Porphobilinogen deaminase (hydroxymethylbilane synthase), C-terminal domain [ 54782]  (1)
  Potassium channel toxins [ 75739]  (1)
  Pre-protein crosslinking domain of SecA [ 81767]  (1)
  Precorrin-8X methylmutase CbiC/CobH [ 63965]  (1)
  Prefoldin [ 46579]  (1)
  Prenyltransferase-like [ 143492]  (1)
  Prepeptide of 5-ALAS [ 70028]  (1)
  Preprotein translocase SecE subunit [ 103456]  (1)
  Preprotein translocase SecY subunit [ 103491]  (1)
  PriB N-terminal domain-like [ 140914]  (1)
  Prion protein fragments [ 70038]  (1)
  Prion-like [ 54098]  (1)
  Probable ACP-binding domain of malonyl-CoA ACP transacylase [ 55048]  (1)
  Probable GTPase Der, C-terminal domain [ 82653]  (1)
  Profilin (actin-binding protein) [ 55770]  (1)
  Programmed cell death protein 5 fragments [ 144336]  (1)
  Proguanylin [ 89890]  (1)
  Prokaryotic ribosomal protein L17 [ 64263]  (1)
  Prokaryotic type I DNA topoisomerase [ 56712]  (1)
  Prokaryotic type KH domain (KH-domain type II) [ 54814]  (1)
  Proline pipe [ 58600]  (1)
  Proline/betaine transporter ProP, C-terminal cytoplasmic domain [ 103661]  (1)
  Proteasome activator [ 47216]  (1)
  Protein A Ig(Fc)-binding domain mimics [ 58864]  (1)
  Protein HNS-dependent expression A; HdeA [ 47752]  (1)
  Protein prenylyltransferase [ 48439]  (1)
  Protein serine/threonine phosphatase 2C, C-terminal domain [ 81601]  (1)
  Protein-L-isoaspartyl O-methyltransferase, C-terminal domain [ 68930]  (1)
  Proteinase A inhibitor IA3 [ 48686]  (1)
  Proteins of incorrect, partial and unknown sequence [ 58208]  (1)
  Proto-oncogene tyrosine-protein kinase lck CD4/CD8 interacting region [ 103749]  (1)
  Proton glutamate symport protein [ 118215]  (1)
  Protozoan pheromone proteins [ 47014]  (1)
  PrpR receptor domain-like [ 159800]  (1)
  PsbZ-like [ 161055]  (1)
  Pseudo ankyrin repeat-like [ 140860]  (1)
  PspA lactotransferrin-binding region [ 161270]  (1)
  PurM C-terminal domain-like [ 56042]  (1)
  PurM N-terminal domain-like [ 55326]  (1)
  Purine and uridine phosphorylases [ 53167]  (1)
  Purple acid phosphatase, N-terminal domain [ 49363]  (1)
  Putative anticodon-binding domain of alanyl-tRNA synthetase (AlaRS) [ 101353]  (1)
  Putative cyclase [ 102198]  (1)
  Putative dsDNA mimic [ 102816]  (1)
  Putative glucosidase YicI, C-terminal domain [ 117125]  (1)
  Putative isomerase YbhE [ 101908]  (1)
  Putative methyltransferase TM0872, insert domain [ 81799]  (1)
  Putative modulator of DNA gyrase, PmbA/TldD [ 111283]  (1)
  Putative transcriptional regulator TM1602, C-terminal domain [ 75500]  (1)
  Pym (Within the bgcn gene intron protein, WIBG), N-terminal domain [ 101931]  (1)
  Pyridoxine 5'-phosphate synthase [ 63892]  (1)
  Pyrimidine nucleoside phosphorylase C-terminal domain [ 54680]  (1)
  Pyrrolidone carboxyl peptidase (pyroglutamate aminopeptidase) [ 53182]  (1)
  Pyruvate-ferredoxin oxidoreductase, PFOR, domain III [ 53323]  (1)
  p53 tetramerization domain [ 47719]  (1)
  pak1 autoregulatory domain [ 58729]  (1)

R

SuperfamilyDescription [Sunid] (#Children)
Prefixed with R   Restriction endonuclease-like [ 52980]  (33)
  RmlC-like cupins [ 51182]  (24)
  Ribonuclease H-like [ 53098]  (14)
  Ribosomal protein S5 domain 2-like [ 54211]  (12)
  Ribbon-helix-helix [ 47598]  (11)
  RuvA domain 2-like [ 47781]  (7)
  RING/U-box [ 57850]  (6)
  Retroviral matrix proteins [ 47836]  (6)
  Ribulose-phoshate binding barrel [ 51366]  (6)
  RNA-binding domain, RBD [ 54928]  (5)
  Ribokinase-like [ 53613]  (5)
  Rhodanese/Cell cycle control phosphatase [ 52821]  (4)
  RNI-like [ 52047]  (3)
  Rad51 N-terminal domain-like [ 47794]  (3)
  Radical SAM enzymes [ 102114]  (3)
  Riboflavin synthase domain-like [ 63380]  (3)
  Ribosomal proteins S24e, L23 and L15e [ 54189]  (3)
  Ribosome and ribosomal fragments [ 58119]  (3)
  Ricin B-like lectins [ 50370]  (3)
  Rubredoxin-like [ 57802]  (3)
  RBP11-like subunits of RNA polymerase [ 55257]  (2)
  RCC1/BLIP-II [ 50985]  (2)
  RL5-like [ 55282]  (2)
  RNA polymerase subunits [ 63393]  (2)
  RNase III domain-like [ 69065]  (2)
  RPB6/omega subunit-like [ 63562]  (2)
  RelE-like [ 143011]  (2)
  Reovirus inner layer core protein p3 [ 56831]  (2)
  Retrovirus capsid dimerization domain-like [ 47353]  (2)
  Rho N-terminal domain-like [ 68912]  (2)
  Riboflavin kinase-like [ 82114]  (2)
  Ribosomal L27 protein-like [ 110324]  (2)
  Ribosomal protein L16p/L10e [ 54686]  (2)
  Ribosomal protein L25-like [ 50715]  (2)
  Ribosome inactivating proteins (RIP) [ 56371]  (2)
  Rof/RNase P subunit-like [ 101744]  (2)
  Rotavirus nonstructural proteins [ 58030]  (2)
  Rudiment single hybrid motif [ 51246]  (2)
  (2r)-phospho-3-sulfolactate synthase ComA [ 102110]  (1)
  R1 subunit of ribonucleotide reductase, N-terminal domain [ 48168]  (1)
  R3H domain [ 82708]  (1)
  RAP domain-like [ 47045]  (1)
  RGC domain-like [ 143885]  (1)
  RILP dimerisation region [ 161256]  (1)
  RNA 3'-terminal phosphate cyclase, RPTC, insert domain [ 52913]  (1)
  RNA bacteriophage capsid protein [ 55405]  (1)
  RNA polymerase [ 58181]  (1)
  RNA polymerase subunit RPB10 [ 46924]  (1)
  RNA-binding protein She2p [ 116942]  (1)
  RNase A-like [ 54076]  (1)
  ROP protein [ 47380]  (1)
  RP71935 [ 58428]  (1)
  RPA2825-like [ 158634]  (1)
  RPB5-like RNA polymerase subunit [ 55287]  (1)
  RSG-1.2 peptide [ 58330]  (1)
  RUN domain-like [ 140741]  (1)
  Rab geranylgeranyltransferase alpha-subunit, insert domain [ 49594]  (1)
  Rabenosyn-5 Rab-binding domain-like [ 140125]  (1)
  Rack1 interaction site of the CAMP-specific phosphodiesterase pde4d5. [ 70023]  (1)
  Rad50 coiled-coil Zn hook [ 75712]  (1)
  RalF, C-terminal domain [ 118104]  (1)
  Ran binding protein zinc finger-like [ 90209]  (1)
  Ran-GTPase activating protein 1 (RanGAP1), C-terminal domain [ 69099]  (1)
  Rap/Ran-GAP [ 111347]  (1)
  Rap30/74 interaction domains [ 50916]  (1)
  Ras GEF [ 48366]  (1)
  RbcX-like [ 158615]  (1)
  RbsD-like [ 102546]  (1)
  Rbstp2229 protein [ 111171]  (1)
  RecA protein, C-terminal domain [ 54752]  (1)
  RecG, N-terminal domain [ 69008]  (1)
  Receptor-binding domain of short tail fibre protein gp12 [ 88874]  (1)
  Recombination endonuclease VII, C-terminal and dimerization domains [ 68918]  (1)
  Recombination protein RecR [ 111304]  (1)
  Regulator of G-protein signaling, RGS [ 48097]  (1)
  Regulatory factor Nef [ 55671]  (1)
  Regulatory protein AraC [ 51215]  (1)
  RelB-like [ 141004]  (1)
  Release factor [ 75620]  (1)
  Reovirus components [ 58176]  (1)
  Replicase NSP9 [ 101816]  (1)
  Replication modulator SeqA, C-terminal DNA-binding domain [ 82808]  (1)
  Replication terminator protein (Tus) [ 56596]  (1)
  Replisome organizer (g39p helicase loader/inhibitor protein) [ 89064]  (1)
  Resistin [ 111423]  (1)
  Resolvase-like [ 53041]  (1)
  Respiratory nitrate reductase 1 gamma chain [ 103501]  (1)
  Retinoblastoma-associated protein RB1 fragments [ 144326]  (1)
  Retro-GCN4 leucine zipper [ 58852]  (1)
  Retrovirus capsid protein, N-terminal core domain [ 47943]  (1)
  Retrovirus zinc finger-like domains [ 57756]  (1)
  Rhabdovirus nucleoprotein-like [ 140809]  (1)
  Rhomboid-like [ 144091]  (1)
  RibA-like [ 142695]  (1)
  Ribonuclease PH domain 2-like [ 55666]  (1)
  Ribonuclease Rh-like [ 55895]  (1)
  Ribonuclease domain of colicin E3 [ 63840]  (1)
  Ribose/Galactose isomerase RpiB/AlsB [ 89623]  (1)
  Ribosomal L11/L12e N-terminal domain [ 54747]  (1)
  Ribosomal protein L1 [ 56808]  (1)
  Ribosomal protein L10 [ 64659]  (1)
  Ribosomal protein L10-like [ 160369]  (1)
  Ribosomal protein L11, C-terminal domain [ 46906]  (1)
  Ribosomal protein L13 [ 52161]  (1)
  Ribosomal protein L14 [ 50193]  (1)
  Ribosomal protein L19 (L19e) [ 48140]  (1)
  Ribosomal protein L20 [ 74731]  (1)
  Ribosomal protein L22 [ 54843]  (1)
  Ribosomal protein L29 (L29p) [ 46561]  (1)
  Ribosomal protein L30p/L7e [ 55129]  (1)
  Ribosomal protein L31e [ 54575]  (1)
  Ribosomal protein L32e [ 52042]  (1)
  Ribosomal protein L34p [ 144321]  (1)
  Ribosomal protein L36 [ 57840]  (1)
  Ribosomal protein L39e [ 48662]  (1)
  Ribosomal protein L4 [ 52166]  (1)
  Ribosomal protein L6 [ 56053]  (1)
  Ribosomal protein L7/12, oligomerisation (N-terminal) domain [ 48300]  (1)
  Ribosomal protein L9 C-domain [ 55653]  (1)
  Ribosomal protein S10 [ 54999]  (1)
  Ribosomal protein S16 [ 54565]  (1)
  Ribosomal protein S18 [ 46911]  (1)
  Ribosomal protein S19 [ 54570]  (1)
  Ribosomal protein S2 [ 52313]  (1)
  Ribosomal protein S20 [ 46992]  (1)
  Ribosomal protein S21p [ 161308]  (1)
  Ribosomal protein S3 C-terminal domain [ 54821]  (1)
  Ribosomal protein S6 [ 54995]  (1)
  Ribosomal protein S7 [ 47973]  (1)
  Ribosomal protein S8 [ 56047]  (1)
  Ribosomal proteins L15p and L18e [ 52080]  (1)
  Ribosome binding protein Y (YfiA homologue) [ 69754]  (1)
  Ribosome recycling factor, RRF [ 55194]  (1)
  Ribosome-binding factor A, RbfA [ 89919]  (1)
  Right-handed coiled coil [ 58888]  (1)
  Rnp2-like [ 160350]  (1)
  Roadblock/LC7 domain [ 103196]  (1)
  Rotavirus NSP2 fragment, C-terminal domain [ 75347]  (1)
  Rotavirus NSP2 fragment, N-terminal domain [ 75574]  (1)
  RplX-like [ 160374]  (1)
  Rps17e-like [ 116820]  (1)
  RraA-like [ 89562]  (1)
  RuBisCO, large subunit, small (N-terminal) domain [ 54966]  (1)
  RuBisCO, small subunit [ 55239]  (1)
  RuBisCo LSMT C-terminal, substrate-binding domain [ 81822]  (1)
  RuBisCo, C-terminal domain [ 51649]  (1)
  Rv1873-like [ 140736]  (1)
  Rv2632c-like [ 143212]  (1)
  Rv2827c C-terminal domain-like [ 160887]  (1)

S

SuperfamilyDescription [Sunid] (#Children)
Prefixed with S   S-adenosyl-L-methionine-dependent methyltransferases [ 53335]  (57)
  SGNH hydrolase [ 52266]  (9)
  Six-hairpin glycosidases [ 48208]  (9)
  Sm-like ribonucleoproteins [ 50182]  (6)
  Scorpion toxin-like [ 57095]  (5)
  SCP-like [ 55718]  (4)
  SMAD/FHA domain [ 49879]  (4)
  SNARE-like [ 64356]  (4)
  Saposin [ 47862]  (4)
  ssDNA-binding transcriptional regulator domain [ 54447]  (4)
  S13-like H2TH domain [ 46946]  (3)
  S15/NS1 RNA-binding domain [ 47060]  (3)
  SAICAR synthase-like [ 56104]  (3)
  SAM/Pointed domain [ 47769]  (3)
  SET domain [ 82199]  (3)
  SIS domain [ 53697]  (3)
  SPOC domain-like [ 100939]  (3)
  Sensory domain-like [ 103190]  (3)
  Sigma3 and sigma4 domains of RNA polymerase sigma factors [ 88659]  (3)
  Snake toxin-like [ 57302]  (3)
  Starch-binding domain-like [ 49452]  (3)
  SufE/NifU [ 82649]  (3)
  ssDNA viruses [ 88645]  (3)
  S-adenosylmethionine decarboxylase [ 56276]  (2)
  SAND domain-like [ 63763]  (2)
  SRCR-like [ 56487]  (2)
  STI-like [ 50386]  (2)
  Scorpion toxin-based designs [ 58918]  (2)
  Sec63 N-terminal domain-like [ 158702]  (2)
  SecB-like [ 54611]  (2)
  Serine metabolism enzymes domain [ 143548]  (2)
  Serine protease inhibitors [ 57567]  (2)
  Sialidases [ 50939]  (2)
  SpoIIaa-like [ 52091]  (2)
  SspB-like [ 101738]  (2)
  Subdomain of clathrin and coatomer appendage domain [ 55711]  (2)
  Subtilisin-like [ 52743]  (2)
  Subunits of heterodimeric actin filament capping protein Capz [ 90096]  (2)
  Synthetic high affinity IgE receptor antagonists [ 64704]  (2)
  'SARS ORF9b-like [ 141666]  (1)
  30S ribosomal protein THX [ 58322]  (1)
  S-adenosylmethionine synthetase [ 55973]  (1)
  SAP domain [ 68906]  (1)
  SARS Nsp1-like [ 160099]  (1)
  SARS receptor-binding domain-like [ 143587]  (1)
  SBT domain [ 103612]  (1)
  SEA domain [ 82671]  (1)
  SH2 domain [ 55550]  (1)
  SH3-domain [ 50044]  (1)
  SMAD MH1 domain [ 56366]  (1)
  SMI1/KNR4-like [ 160631]  (1)
  SMR domain-like [ 160443]  (1)
  SMc04008-like [ 158757]  (1)
  SNARE fusion complex [ 58038]  (1)
  SNF-like [ 161070]  (1)
  SO1590-like [ 159238]  (1)
  SO2669-like [ 158418]  (1)
  SOCS box-like [ 158235]  (1)
  SP0561-like [ 140683]  (1)
  SP0830-like [ 160379]  (1)
  SPy1572-like [ 140121]  (1)
  SRF-like [ 55455]  (1)
  SRP19 [ 69695]  (1)
  SSO1389-like [ 160980]  (1)
  SSo0622-like [ 111278]  (1)
  STAT [ 47655]  (1)
  STIV B116-like [ 143602]  (1)
  SWIB/MDM2 domain [ 47592]  (1)
  SacY-like RNA-binding domain [ 50151]  (1)
  Sama2622-like [ 158675]  (1)
  Satellite viruses [ 88650]  (1)
  Satiety factor CART (cocaine and amphetamine regulated transcript) [ 64546]  (1)
  Scaffolding protein gpD of bacteriophage procapsid [ 48045]  (1)
  Sec-C motif [ 103642]  (1)
  Sec-beta subunit [ 103460]  (1)
  Sec1/munc18-like (SM) proteins [ 56815]  (1)
  Sec2 N-terminal region [ 144284]  (1)
  Sec7 domain [ 48425]  (1)
  Second domain of FERM [ 47031]  (1)
  Second domain of Mu2 adaptin subunit (ap50) of ap2 adaptor [ 49447]  (1)
  Sema domain [ 101912]  (1)
  Serpins [ 56574]  (1)
  Serum albumin-like [ 48552]  (1)
  Seven-hairpin glycosidases [ 48225]  (1)
  Sheep myeloid antimicrobial peptide SMAP29 based peptides [ 75752]  (1)
  Shew3726-like [ 160272]  (1)
  Sigma2 domain of RNA polymerase sigma factors [ 88946]  (1)
  Signal peptide-binding domain [ 47446]  (1)
  Signal recognition particle (SRP) complex [ 103692]  (1)
  Signal recognition particle alu RNA binding heterodimer, SRP9/14 [ 54762]  (1)
  SinR repressor dimerisation domain-like [ 47406]  (1)
  Single hybrid motif [ 51230]  (1)
  SipA N-terminal domain-like [ 140746]  (1)
  SirA-like [ 64307]  (1)
  Siroheme synthase middle domains-like [ 75615]  (1)
  Skp1 dimerisation domain-like [ 81382]  (1)
  Smac/diablo [ 46984]  (1)
  Smad-binding domain of Sara [ 58718]  (1)
  Small protein B (SmpB) [ 74982]  (1)
  Small subunit C-terminal inhibitory peptide of ribonucleotide reductase [ 58708]  (1)
  Small-conductance potassium channel [ 81327]  (1)
  Smc hinge domain [ 75553]  (1)
  Smp-1-like [ 101601]  (1)
  Smr-associated domain-like [ 158949]  (1)
  Soluble domain of poliovirus core protein 3a [ 89043]  (1)
  Soluble quinoprotein glucose dehydrogenase [ 50952]  (1)
  Soluble secreted chemokine inhibitor, VCCI [ 49889]  (1)
  Somatomedin B domain [ 90188]  (1)
  SopE-like GEF domain [ 81832]  (1)
  Sortase [ 63817]  (1)
  Spectrin repeat [ 46966]  (1)
  Spermadhesin, CUB domain [ 49854]  (1)
  SpoVG-like [ 160537]  (1)
  Sporulation inhibitor Sda [ 100985]  (1)
  Sporulation related repeat [ 110997]  (1)
  Sporulation response regulatory protein Spo0B [ 55890]  (1)
  Stabilizer of iron transporter SufD [ 101960]  (1)
  Staphylocoagulase [ 101094]  (1)
  Staphylococcal nuclease [ 50199]  (1)
  Staphylokinase/streptokinase [ 54328]  (1)
  Stathmin [ 101494]  (1)
  Substrate-binding domain of HMG-CoA reductase [ 56542]  (1)
  Subtilisin inhibitor [ 55399]  (1)
  Subunit III of photosystem I reaction centre, PsaF [ 81536]  (1)
  Subunit IX of photosystem I reaction centre, PsaJ [ 81544]  (1)
  Subunit PsaX of photosystem I reaction centre [ 81552]  (1)
  Subunit VIII of photosystem I reaction centre, PsaI [ 81540]  (1)
  Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) [ 81514]  (1)
  Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) [ 81518]  (1)
  Subunit XII of photosystem I reaction centre, PsaM [ 81548]  (1)
  Succinate dehydrogenase/fumarate reductase flavoprotein C-terminal domain [ 46977]  (1)
  Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain [ 56425]  (1)
  Succinyl-CoA synthetase domains [ 52210]  (1)
  Sulfolobus fructose-1,6-bisphosphatase-like [ 111249]  (1)
  Superantigen (mitogen) Ypm [ 101606]  (1)
  Superantigen MAM [ 101344]  (1)
  Superantigen toxins, C-terminal domain [ 54334]  (1)
  Supernatant protein factor (SPF), C-terminal domain [ 101576]  (1)
  Superoxide reductase-like [ 49367]  (1)
  Suppressor of Fused, N-terminal domain [ 103359]  (1)
  SurE-like [ 64167]  (1)
  Surface presentation of antigens (SPOA) [ 101801]  (1)
  Surp module (SWAP domain) [ 109905]  (1)
  Swiveling domain of dehydratase reactivase alpha subunit [ 82317]  (1)
  Synaptobrevin-II fragments [ 58759]  (1)
  Syndecan-4 cytoplasmic domain [ 64639]  (1)
  Synuclein [ 118375]  (1)

T

SuperfamilyDescription [Sunid] (#Children)
Prefixed with T   Thioredoxin-like [ 52833]  (23)
  (Trans)glycosidases [ 51445]  (14)
  TPR-like [ 48452]  (8)
  Thiamin diphosphate-binding fold (THDP-binding) [ 52518]  (8)
  Thioesterase/thiol ester dehydrase-isomerase [ 54637]  (8)
  Trimeric LpxA-like enzymes [ 51161]  (8)
  Translation proteins SH3-like domain [ 50104]  (7)
  Tautomerase/MIF [ 55331]  (6)
  Translation proteins [ 50447]  (6)
  Terpenoid synthases [ 48576]  (5)
  Terpenoid cyclases/Protein prenyltransferases [ 48239]  (4)
  Tetrahydrobiopterin biosynthesis enzymes-like [ 55620]  (4)
  Trypsin-like serine proteases [ 50494]  (4)
  Tudor/PWWP/MBT [ 63748]  (4)
  tRNA-binding arm [ 46589]  (4)
  THUMP domain-like [ 143437]  (3)
  TIMP-like [ 50242]  (3)
  TK C-terminal domain-like [ 52922]  (3)
  TrpR-like [ 48295]  (3)
  Type III secretion system domain [ 140591]  (3)
  TATA-box binding protein-like [ 55945]  (2)
  TGS-like [ 81271]  (2)
  TNF receptor-like [ 57586]  (2)
  TRAF domain-like [ 49599]  (2)
  TRAP-like [ 51219]  (2)
  TTHA0583/YokD-like [ 110710]  (2)
  TTHA1013/TTHA0281-like [ 143100]  (2)
  TerB-like [ 158682]  (2)
  Thiolase-like [ 53901]  (2)
  ThrRS/AlaRS common domain [ 55186]  (2)
  TolA/TonB C-terminal domain [ 74653]  (2)
  Translational machinery components [ 53137]  (2)
  Transmembrane di-heme cytochromes [ 81342]  (2)
  Triger factor/SurA peptide-binding domain-like [ 109998]  (2)
  Troponin coil-coiled subunits [ 90250]  (2)
  Tubby C-terminal domain-like [ 54518]  (2)
  Type III secretory system chaperone-like [ 69635]  (2)
  5' to 3' exonuclease, C-terminal subdomain [ 47807]  (1)
  T-antigen specific domain-like [ 161240]  (1)
  T4 endonuclease V [ 47077]  (1)
  TAF(II)230 TBP-binding fragment [ 47055]  (1)
  TAFH domain-like [ 158553]  (1)
  TAT peptides [ 58334]  (1)
  TAZ (CH) Zn-binding domain based design [ 75785]  (1)
  TAZ domain [ 57933]  (1)
  TB module/8-cys domain [ 57581]  (1)
  TBP-binding domain of the transcription factor IIIb Brf1 subunit [ 90298]  (1)
  TBP-interacting protein-like [ 159612]  (1)
  TFB5-like [ 142897]  (1)
  TH (toxin hand)-motif beta-sheet mini-protein designs [ 64674]  (1)
  TM0693-like [ 140560]  (1)
  TM0957-like [ 141318]  (1)
  TM1457-like [ 118010]  (1)
  TM1622-like [ 143477]  (1)
  TM1631-like [ 117396]  (1)
  TM1646-like [ 158397]  (1)
  TMV-like viral coat proteins [ 47195]  (1)
  TNF-like [ 49842]  (1)
  TPR domain-based design [ 90308]  (1)
  TRADD, N-terminal domain [ 55044]  (1)
  TRCF domain-like [ 143517]  (1)
  TROVE domain-like [ 140864]  (1)
  TSP type-3 repeat [ 103647]  (1)
  TSP-1 type 1 repeat [ 82895]  (1)
  TSP9-like [ 144256]  (1)
  TT1751-like [ 103247]  (1)
  TTHA0068-like [ 140663]  (1)
  TTHA1528-like [ 143592]  (1)
  TTHC002-like [ 160761]  (1)
  TTP0101/SSO1404-like [ 143430]  (1)
  Ta0600-like [ 158436]  (1)
  Ta1353-like [ 103165]  (1)
  Tachylectin-2 [ 50934]  (1)
  Taf5 N-terminal domain-like [ 160897]  (1)
  Telomeric repeat binding factor (TRF) dimerisation domain [ 63600]  (1)
  Tertiapin [ 58405]  (1)
  Tetrabrachion [ 58054]  (1)
  Tetracyclin repressor-like, C-terminal domain [ 48498]  (1)
  Tetramerization domain of the Mnt repressor [ 58059]  (1)
  Tetrapyrrole methylase [ 53790]  (1)
  Tetraspanin [ 48652]  (1)
  Tex N-terminal region-like [ 158832]  (1)
  The spindle assembly checkpoint protein mad2 [ 56019]  (1)
  Thermophilic metalloprotease-like [ 144052]  (1)
  Thermostable heterotrimeric coiled coil [ 58828]  (1)
  Thermostable phytase (3-phytase) [ 50956]  (1)
  ThiG-like [ 110399]  (1)
  Thiamin phosphate synthase [ 51391]  (1)
  Thiamin pyrophosphokinase, catalytic domain [ 63999]  (1)
  Thiamin pyrophosphokinase, substrate-binding domain [ 63862]  (1)
  Thiol:disulfide interchange protein DsbD, N-terminal domain (DsbD-alpha) [ 74863]  (1)
  Thrombomodulin EGF domain fragment (residues 409-426) [ 58620]  (1)
  Thymidylate synthase-complementing protein Thy1 [ 69796]  (1)
  Thymidylate synthase/dCMP hydroxymethylase [ 55831]  (1)
  Thyroglobulin type-1 domain [ 57610]  (1)
  Tim10-like [ 144122]  (1)
  Tlp20, baculovirus telokin-like protein [ 51289]  (1)
  TmoB-like [ 110814]  (1)
  TolB, C-terminal domain [ 50960]  (1)
  TolB, N-terminal domain [ 52964]  (1)
  Toll/Interleukin receptor TIR domain [ 52200]  (1)
  Tombusvirus P19 core protein, VP19 [ 103145]  (1)
  Topoisomerase V catalytic domain-like [ 140979]  (1)
  Toprim domain [ 110455]  (1)
  TorD-like [ 89155]  (1)
  Tp47 lipoprotein, N-terminal domain [ 82220]  (1)
  Tp47 lipoprotein, middle and C-terminal domains [ 81986]  (1)
  TraM-like [ 140581]  (1)
  Transactivation domain [ 74800]  (1)
  Transactivation protein TAT [ 58594]  (1)
  Transcription factor IIA (TFIIA), alpha-helical domain [ 47396]  (1)
  Transcription factor IIA (TFIIA), beta-barrel domain [ 50784]  (1)
  Transcription factor NusA, N-terminal domain [ 69705]  (1)
  Transcription factor STAT-4 N-domain [ 48092]  (1)
  Transcriptional repressor TraM [ 109631]  (1)
  Transducin (alpha subunit), insertion domain [ 47895]  (1)
  Transducin (heterotrimeric G protein), gamma chain [ 48670]  (1)
  Transducin alpha-1 subunit rhodopsin binding domain (res. 340-350) [ 58678]  (1)
  Transducin gamma-t1 subunit rhodopsin bound fragment (res. 60-71) [ 90291]  (1)
  Transferrin receptor-like dimerisation domain [ 47672]  (1)
  Transferrin receptor-transferrin complex [ 103687]  (1)
  Transglutaminase, two C-terminal domains [ 49309]  (1)
  Translation initiation factor 2 beta, aIF2beta, N-terminal domain [ 100966]  (1)
  Translation initiation factor IF3, C-terminal domain [ 55200]  (1)
  Translation initiation factor IF3, N-terminal domain [ 54364]  (1)
  Translational regulator protein regA [ 55064]  (1)
  Translin [ 74784]  (1)
  Translocated intimin receptor (tir) intimin-binding domain [ 58734]  (1)
  Transmembrane helical fragments [ 58518]  (1)
  Transposase IS200-like [ 143422]  (1)
  Transthyretin (synonym: prealbumin) [ 49472]  (1)
  Trefoil [ 57492]  (1)
  Tricorn protease N-terminal domain [ 69304]  (1)
  Tricorn protease domain 2 [ 69322]  (1)
  Trigger factor ribosome-binding domain [ 102735]  (1)
  Trimeric adhesin [ 101999]  (1)
  Trimerization domain of TRAF [ 57953]  (1)
  Triosephosphate isomerase (TIM) [ 51351]  (1)
  Triple coiled coil domain of C-type lectins [ 57944]  (1)
  TrkA C-terminal domain-like [ 116726]  (1)
  Trm112p-like [ 158997]  (1)
  TrmB C-terminal domain-like [ 159071]  (1)
  TrmE connector domain [ 116878]  (1)
  Tropomyosin [ 57997]  (1)
  Troponin I fragments [ 58415]  (1)
  Trp-cage miniprotein [ 75770]  (1)
  Trypsin inhibitor SFTIf-1 [ 64654]  (1)
  Tryptophan synthase beta subunit-like PLP-dependent enzymes [ 53686]  (1)
  Tsx-like channel [ 111364]  (1)
  Tubulin C-terminal domain-like [ 55307]  (1)
  Tubulin chaperone cofactor A [ 46988]  (1)
  Tubulin nucleotide-binding domain-like [ 52490]  (1)
  Tumor suppressor gene product Apc [ 82931]  (1)
  Tumor suppressor p53 fragments [ 58744]  (1)
  Tumor suppressor protein p19-ARF fragment [ 70043]  (1)
  Type I dockerin domain [ 63446]  (1)
  Type II 3-dehydroquinate dehydratase [ 52304]  (1)
  Type II DNA topoisomerase [ 56719]  (1)
  Type X cellulose binding domain, CBDX [ 57615]  (1)
  Typo IV secretion system protein TraC [ 101082]  (1)
  t-snare proteins [ 47661]  (1)
  tRNA-guanine transglycosylase [ 51713]  (1)
  tRNA-intron endonuclease N-terminal domain-like [ 55267]  (1)
  tRNA-intron endonuclease catalytic domain-like [ 53032]  (1)
  the cytoplasmic N-terminus of the bk beta-subunit kcnmb2 [ 70033]  (1)

V

SuperfamilyDescription [Sunid] (#Children)
Prefixed with V   vWA-like [ 53300]  (5)
  Viral protein domain [ 49818]  (3)
  Virus attachment protein globular domain [ 49835]  (3)
  Viral glycoprotein ectodomain-like [ 161008]  (2)
  V-region of surface antigen I/II (SA I/II, PAC) [ 74914]  (1)
  V-type ATP synthase subunit C [ 103486]  (1)
  V-type ATPase subunit E-like [ 160527]  (1)
  VC0467-like [ 143456]  (1)
  VHL [ 49468]  (1)
  VHP, Villin headpiece domain [ 47050]  (1)
  VMIP-II fragment [ 58764]  (1)
  VP4 membrane interaction domain [ 111379]  (1)
  VPA0735-like [ 160935]  (1)
  VPR protein fragments [ 58354]  (1)
  VPS28 C-terminal domain-like [ 140427]  (1)
  VPS9 domain [ 109993]  (1)
  VSV matrix protein [ 75404]  (1)
  Vacuolar ATP synthase subunit C [ 118203]  (1)
  Vacuolar targeting peptide from NA-PROPI (residues 29-54) [ 58560]  (1)
  ValRS/IleRS/LeuRS editing domain [ 50677]  (1)
  Vanabin-like [ 144129]  (1)
  Variable surface antigen VlsE [ 74748]  (1)
  Variant surface glycoprotein (N-terminal domain) [ 58087]  (1)
  Variant surface glycoprotein MITAT 1.2, VSG 221, C-terminal domain [ 118251]  (1)
  Vasodilator-stimulated phosphoprotein, VASP, tetramerisation domain [ 118370]  (1)
  VhTI-like [ 161148]  (1)
  Viral DNA-binding domain [ 54957]  (1)
  Viral chemokine binding protein m3 [ 82046]  (1)
  Viral glycoprotein, central and dimerisation domains [ 56983]  (1)
  Viral leader polypeptide zinc finger [ 144251]  (1)
  Viral ssDNA binding protein [ 118208]  (1)
  Virulence-associated V antigen [ 103388]  (1)
  Virus ectodomain [ 58069]  (1)
  Virus envelope proteins [ 75719]  (1)
  Viruses and virus-receptor complexes [ 58163]  (1)
  Vitelline membrane outer protein-I (VMO-I) [ 51092]  (1)
  Vng1086c-like [ 140371]  (1)
  Voltage-gated potassium channels [ 81324]  (1)

Y

SuperfamilyDescription [Sunid] (#Children)
Prefixed with Y   YVTN repeat-like/Quinoprotein amine dehydrogenase [ 50969]  (3)
  YcfA/nrd intein domain [ 54786]  (3)
  YbeD/HP0495-like [ 117991]  (2)
  Yeast killer toxins [ 55221]  (2)
  YgaC/TfoX-N like [ 159894]  (2)
  YheA/YmcA-like [ 158622]  (2)
  YjgF-like [ 55298]  (2)
  YktB/PF0168-like [ 142913]  (2)
  YrdC/RibB [ 55821]  (2)
  YAP1 redox domain [ 111430]  (1)
  YNR034W-A-like [ 160683]  (1)
  YWTD domain [ 63825]  (1)
  YacF-like [ 160950]  (1)
  YaeB-like [ 118196]  (1)
  YajQ-like [ 89963]  (1)
  YbaB-like [ 82607]  (1)
  YbaK/ProRS associated domain [ 55826]  (1)
  YbiA-like [ 143990]  (1)
  YbjQ-like [ 117782]  (1)
  YccV-like [ 141255]  (1)
  YceI-like [ 101874]  (1)
  YcfC-like [ 101322]  (1)
  YcgL-like [ 160191]  (1)
  YdfO-like [ 160419]  (1)
  YdgH-like [ 159871]  (1)
  YdhA-like [ 141488]  (1)
  YdhG-like [ 159888]  (1)
  YebC-like [ 75625]  (1)
  YeeU-like [ 143737]  (1)
  YefM-like [ 143120]  (1)
  YegP-like [ 160113]  (1)
  YehR-like [ 160704]  (1)
  YehU-like [ 118001]  (1)
  YejL-like [ 158651]  (1)
  YerB-like [ 159774]  (1)
  YfbU-like [ 116960]  (1)
  YfgJ-like [ 161187]  (1)
  YfmB-like [ 140688]  (1)
  YgbK-like [ 142764]  (1)
  YgfB-like [ 101327]  (1)
  YgfY-like [ 109910]  (1)
  YggU-like [ 69786]  (1)
  YggX-like [ 111148]  (1)
  YhbC-like, C-terminal domain [ 74942]  (1)
  YhbC-like, N-terminal domain [ 75420]  (1)
  YhbY-like [ 75471]  (1)
  YidB-like [ 140804]  (1)
  YjbQ-like [ 111038]  (1)
  YjbR-like [ 142906]  (1)
  YjeF N-terminal domain-like [ 64153]  (1)
  YkuJ-like [ 143567]  (1)
  YkvR-like [ 159173]  (1)
  YlxR-like [ 64376]  (1)
  YmcC-like [ 159270]  (1)
  YnzC-like [ 158221]  (1)
  YoaC-like [ 140670]  (1)
  YojJ-like [ 143597]  (1)
  YonK-like [ 160570]  (1)
  YopH tyrosine phosphatase N-terminal domain [ 64449]  (1)
  YopT-like [ 159222]  (1)
  YopX-like [ 159006]  (1)
  YorP-like [ 159038]  (1)
  YozE-like [ 140652]  (1)
  YppE-like [ 140415]  (1)
  Ypt/Rab-GAP domain of gyp1p [ 47923]  (1)
  YqaI-like [ 160713]  (1)
  YqcC-like [ 158452]  (1)
  YqgQ-like [ 158379]  (1)
  YueI-like [ 160515]  (1)
  YugE-like [ 116922]  (1)
  YugN-like [ 160755]  (1)
  YutG-like [ 101307]  (1)
  YvfG-like [ 158388]  (1)
  YwmB-like [ 143842]  (1)