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Thymidylate synthase/dCMP hydroxymethylase superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   Alpha and beta proteins (a+b) [ 53931] (376)
Fold:   Thymidylate synthase/dCMP hydroxymethylase [ 55830]
Superfamily:   Thymidylate synthase/dCMP hydroxymethylase [ 55831]
Families:   Thymidylate synthase/dCMP hydroxymethylase [ 55832] (3)


Superfamily statistics
Genomes (2,355) Uniprot 2018_03 genome PDB chains (SCOP 1.75)
Domains 2,716 22,560 48
Proteins 2,693 22,435 48


Functional annotation
General category Metabolism
Detailed category Nucleotide metabolism and transport

Document:
Function annotation of SCOP domain superfamilies

Enzyme Commission (EC)

(show details)
EC termFDR (all)SDEO levelAnnotation (direct or inherited)
Enzyme Commission (EC)Transferring one-carbon groups0Least InformativeDirect
Enzyme Commission (EC)Oxidoreductases1Least InformativeInherited
Enzyme Commission (EC)Methyltransferases0Moderately InformativeDirect
Enzyme Commission (EC)Acting on the CH-NH group of donors0.00000000002717Moderately InformativeDirect
Enzyme Commission (EC)With NAD(+) or NADP(+) as acceptor0.000000000004276InformativeDirect

Document: EC annotation of SCOP domains

Arabidopsis Plant Ontology (AP)

(show details)
AP termFDR (all)SDAP levelAnnotation (direct or inherited)
Plant ANatomical entity (PAN)guard cell0Least InformativeDirect

Document: AP annotation of SCOP domains

Enzyme Commission (EC)

(show details)
EC termFDR (all)SDEC levelAnnotation (direct or inherited)
Enzyme Commission (EC)Oxidoreductases1Least InformativeInherited
Enzyme Commission (EC)Transferring one-carbon groups0Moderately InformativeDirect
Enzyme Commission (EC)Acting on the CH-NH group of donors0.00000000001115InformativeDirect
Enzyme Commission (EC)Hydroxymethyl-, formyl- and related transferases1InformativeInherited

Document: EC annotation of SCOP domains

InterPro annotation
Cross references IPR000398 SSF55831 Protein matches
Abstract Thymidylate synthase [PubMed6996564, PubMed2117882] catalyzes the reductive methylation of dUMP to dTMP with concomitant conversion of 5,10-methylenetetrahydrofolate to dihydrofolate: 5,10-methylenetetrahydrofolate + dUMP = dihydrofolate + dTMP This provides the sole de novo pathway for production of dTMP and is the only enzyme in folate metabolism in which the 5,10-methylenetetrahydrofolate is oxidised during one-carbon transfer [PubMed3099389]. The enzyme is essential for regulating the balanced supply of the 4 DNA precursors in normal DNA replication: defects in the enzyme activity affecting the regulation process cause various biological and genetic abnormalities, such as thymineless death [PubMed2243092]. The enzyme is an important target for certain chemotherapeutic drugs. Thymidylate synthase is an enzyme of about 30 to 35 Kd in most species except in protozoan and plants where it exists as a bifunctional enzyme that includes a dihydrofolate reductase domain [PubMed3099389]. A cysteine residue is involved in the catalytic mechanism (it covalently binds the 5,6-dihydro-dUMP intermediate). The sequence around the active site of this enzyme is conserved from phages to vertebrates.

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) · Arabidopsis Plant Ontology (AP) · 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 10 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 Thymidylate synthase/dCMP hydroxymethylase 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 10 hidden Markov models representing the Thymidylate synthase/dCMP hydroxymethylase 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) · Arabidopsis Plant Ontology (AP) · Enzyme Commission (EC) · Internal database links ]