KEGG   ENZYME: 3.5.4.30Help
Entry
EC 3.5.4.30                 Enzyme                                 
Name
dCTP deaminase (dUMP-forming)
Class
Hydrolases;
Acting on carbon-nitrogen bonds, other than peptide bonds;
In cyclic amidines
BRITE hierarchy
Sysname
dCTP aminohydrolase (dUMP-forming)
Reaction(IUBMB)
dCTP + 2 H2O = dUMP + diphosphate + NH3 [RN:R07307]
Reaction(KEGG)
Substrate
dCTP [CPD:C00458];
H2O [CPD:C00001]
Product
dUMP [CPD:C00365];
diphosphate [CPD:C00013];
NH3 [CPD:C00014]
Comment
Requires Mg2+. Is highly specific for dCTP as substrate as dCMP, CTP, CDP, CMP, cytosine or deoxycytosine are not deaminated. While most bacteria require two enzymes to form dUMP from dCTP (EC 3.5.4.13, dCTP deaminase and EC 3.6.1.23, dUTP diphosphatase), the archaeon Methanocaldococcus jannaschii uses a single enzyme to carry out both functions. This enzyme can also act as a dUTP diphosphatase, but more slowly.
Pathway
Pyrimidine metabolism
Orthology
K09887  
dCTP deaminase (dUMP-forming)
Genes
MJA: 
MFE: 
MVU: 
MFS: 
MMX: 
Taxonomy
Reference
1  [PMID:12538648]
  Authors
Li H, Xu H, Graham DE, White RH.
  Title
The Methanococcus jannaschii dCTP deaminase is a bifunctional deaminase and diphosphatase.
  Journal
J. Biol. Chem. 278 (2003) 11100-6.
  Organism
Methanococcus jannaschii [GN:mja]
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
DBGET integrated database retrieval system