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Spermadhesin, CUB domain superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   All beta proteins [ 48724] (174)
Fold:   CUB-like [ 49853] (3)
Superfamily:   Spermadhesin, CUB domain [ 49854]
Families:   Spermadhesin, CUB domain [ 49855] (5)


Superfamily statistics
Genomes (217) Uniprot 2018_03 genome PDB chains (SCOP 1.75)
Domains 20,924 58,517 8
Proteins 8,330 26,023 7


Functional annotation
General category General
Detailed category General

Document:
Function annotation of SCOP domain superfamilies

Enzyme Commission (EC)

(show details)
EC termFDR (all)SDEO levelAnnotation (direct or inherited)
Enzyme Commission (EC)Acting on peptide bonds (peptide hydrolases)0Least InformativeDirect
Enzyme Commission (EC)Serine endopeptidases0.0003183Moderately InformativeDirect
Enzyme Commission (EC)Metalloendopeptidases0.000000000008539InformativeDirect
Enzyme Commission (EC)Complement subcomponent C1s0.000000000003399Highly InformativeDirect
Enzyme Commission (EC)Complement subcomponent C1r0.000000000003399Highly InformativeDirect

Document: EC annotation of SCOP domains

Human Phenotype (HP)

(show details)
HP termFDR (all)SDHP levelAnnotation (direct or inherited)
Phenotypic Abnormality (PA)Abnormality of immune system physiology0.5178Moderately InformativeInherited

Document: HP annotation of SCOP domains

Mouse Phenotype (MP)

(show details)
MP termFDR (all)SDMP levelAnnotation (direct or inherited)
Mammalian Phenotype (MP)nervous system phenotype0.4874Least InformativeInherited
Mammalian Phenotype (MP)abnormal nervous system physiology0.3758Moderately InformativeInherited
Mammalian Phenotype (MP)abnormal muscle morphology0.4512Moderately InformativeInherited
Mammalian Phenotype (MP)abnormal skeleton morphology0.6573Moderately InformativeInherited
Mammalian Phenotype (MP)abnormal innervation0.03906InformativeInherited
Mammalian Phenotype (MP)abnormal bone ossification0.2825InformativeInherited
Mammalian Phenotype (MP)biphasic excitatory postsynaptic current amplitude0.0000001263Highly InformativeDirect
Mammalian Phenotype (MP)short excitatory postsynaptic current rise time0.00005817Highly InformativeDirect
Mammalian Phenotype (MP)abnormal osteoblast cell number0.00008307Highly InformativeDirect
Mammalian Phenotype (MP)abnormal Purkinje cell innervation0.0002133Highly InformativeDirect
Mammalian Phenotype (MP)decreased excitatory postsynaptic current amplitude0.0002728Highly InformativeDirect
Mammalian Phenotype (MP)abnormal tendon morphology0.0009892Highly InformativeDirect
Mammalian Phenotype (MP)abnormal bone volume0.0009979Highly InformativeDirect

Document: MP annotation of SCOP domains

Worm Phenotype (WP)

(show details)
WP termFDR (all)SDWP levelAnnotation (direct or inherited)
Worm Phenotype (WP)pericellular component development variant0.000004206Moderately InformativeDirect
Worm Phenotype (WP)basement membrane remodeling variant0.000000445InformativeDirect

Document: WP annotation of SCOP domains

Fly Anatomy (FA)

(show details) Document: FA annotation of SCOP domains

Zebrafish Anatomy (ZA)

(show details) Document: ZA annotation of SCOP domains

Xenopus Anatomy (XA)

(show details) Document: XA annotation of SCOP domains

Enzyme Commission (EC)

(show details)
EC termFDR (all)SDEC levelAnnotation (direct or inherited)
Enzyme Commission (EC)Hydrolases0Least InformativeDirect
Enzyme Commission (EC)Acting on peptide bonds (peptidases)0Moderately InformativeDirect
Enzyme Commission (EC)Serine endopeptidases0.0000000004282InformativeDirect

Document: EC annotation of SCOP domains

InterPro annotation
Cross references IPR000859 SSF49854 Protein matches
Abstract

The CUB domain (for complement C1r/C1s, Uegf, Bmp1) is a structural motif of approximately 110 residues found almost exclusively in extracellular and plasma membrane-associated proteins, many of which are developmentally regulated [PubMed8510165, PubMed2026272]. These proteins are involved in a diverse range of functions, including complement activation, developmental patterning, tissue repair, axon guidance and angiogenesis, cell signalling, fertilisation, haemostasis, inflammation, neurotransmission, receptor-mediated endocytosis, and tumour suppression [PubMed17335815, PubMed17051152]. Many CUB-containing proteins are peptidases belonging to MEROPS peptidase families M12A (astacin) and S1A (chymotrypsin). Proteins containing a CUB domain include:

  • Mammalian complement subcomponents C1s/C1r, which form the calcium-dependent complex C1, the first component of the classical pathway of the complement system.
  • Cricetidae sp. (Hamster) serine protease Casp, which degrades type I and IV collagen and fibronectin in the presence of calcium.
  • Mammalian complement-activating component of Ra-reactive factor (RARF), a protease that cleaves the C4 component of complement.
  • Vertebrate enteropeptidase , a type II membrane protein of the intestinal brush border, which activates trypsinogen.
  • Vertebrate bone morphogenic protein 1 (BMP-1), a protein which induces cartilage and bone formation and expresses metalloendopeptidase activity.
  • Sea urchin blastula proteins BP10 and SpAN.
  • Caenorhabditis elegans hypothetical proteins F42A10.8 and R151.5.
  • Neuropilin (A5 antigen), a calcium-independent cell adhesion molecule that functions during the formation of certain neuronal circuits.
  • Fibropellins I and III from Strongylocentrotus purpuratus (Purple sea urchin).
  • Mammalian hyaluronate-binding protein TSG-6 (or PS4), a serum and growth factor induced protein.
  • Mammalian spermadhesins.
  • Xenopus laevis embryonic protein UVS.2, which is expressed during dorsoanterior development.

Several of the above proteins consist of a catalytic domain together with several CUB domains interspersed by calcium-binding EGF domains. Some CUB domains appear to be involved in oligomerisation and/or recognition of substrates and binding partners. For example, in the complement proteases, the CUB domains mediate dimerisation and binding to collagen-like regions of target proteins (e.g. C1q for C1r/C1s). The structure of CUB domains consists of a beta-sandwich with a jelly-roll fold. Almost all CUB domains contain four conserved cysteines that probably form two disulphide bridges (C1-C2, C3-C4). The CUB1 domains of C1s and Map19 have calcium-binding sites [PubMed17446170].


InterPro database


PDBeMotif information about ligands, sequence and structure motifs
Cross references PDB entries
Ligand binding statistics
Nucleic-acid binding statistics
Occurrence of secondary structure elements
Occurrence of small 3D structural motifs

PDBeMotif resource

Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Enzyme Commission (EC) · Human Phenotype (HP) · Mouse Phenotype (MP) · Worm Phenotype (WP) · Fly Anatomy (FA) · Zebrafish Anatomy (ZA) · Xenopus Anatomy (XA) · Enzyme Commission (EC) ]

Internal database links

Browse genome assignments for this superfamily. The SUPERFAMILY hidden Markov model library has been used to carry out SCOP domain assignments to all genomes at the superfamily level.


Alignments of sequences to 8 models in this superfamily are available by clicking on the 'Alignments' icon above. PDB sequences less than 40% identical are shown by default, but any other sequence(s) may be aligned. Select PDB sequences, genome sequences, or paste in or upload your own sequences.


Browse and view proteins in genomes which have different domain combinations including a Spermadhesin, CUB domain domain.


Examine the distribution of domain superfamilies, or families, across the major taxonomic kingdoms or genomes within a kingdom. This gives an immediate impression of how superfamilies, or families, are restricted to certain kingdoms of life.


Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.

There are 8 hidden Markov models representing the Spermadhesin, CUB domain superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.


Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Enzyme Commission (EC) · Human Phenotype (HP) · Mouse Phenotype (MP) · Worm Phenotype (WP) · Fly Anatomy (FA) · Zebrafish Anatomy (ZA) · Xenopus Anatomy (XA) · Enzyme Commission (EC) · Internal database links ]