dCTP deaminase

dCTP deaminase
dCTP deaminase
Identifiers
EC number 3.5.4.13
CAS number 37289-18-2
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / EGO

In enzymology, a dCTP deaminase (EC 3.5.4.13) is an enzyme that catalyzes the chemical reaction

dCTP + H2O \rightleftharpoons dUTP + NH3

Thus, the two substrates of this enzyme are dCTP and H2O, whereas its two products are dUTP and NH3.

This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in cyclic amidines. The systematic name of this enzyme class is dCTP aminohydrolase. Other names in common use include deoxycytidine triphosphate deaminase, and 5-methyl-dCTP deaminase. This enzyme participates in pyrimidine metabolism.

Structural studies

As of late 2007, 9 structures have been solved for this class of enzymes, with PDB accession codes 1OGH, 1PKH, 1PKJ, 1PKK, 1XS1, 1XS4, 1XS6, 2J4H, and 2J4Q.

References

  • Tomita F, Takahashi I (1969). "A novel enzyme, dCTP deaminase, found in Bacillus subtilis infected with phage PBS I". Biochim. Biophys. Acta. 179 (1): 18–27. PMID 4976547. 
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