EC 2 - Transferases
EC 2.7 - Transferring phosphorus-containing groups
EC 2.7.2 - Phosphotransferases with a carboxy group as acceptor
EC 2.7.2.2 - Carbamate kinase
IntEnz view
ENZYME view
IntEnz Enzyme Nomenclature
EC 2.7.2.2
Names
Accepted name:
carbamate kinase
Other
names:
CKase
carbamoyl phosphokinase
carbamyl phosphokinase
carbamoyl phosphokinase
carbamyl phosphokinase
Systematic name:
ATP:carbamate phosphotransferase
Reactions
- (1) ATP + NH3 + hydrogen carbonate = ADP + carbamoyl phosphate + H2O
- (1a) ATP + carbamate = ADP + carbamoyl phosphate
- (1b) NH3 + hydrogen carbonate = carbamate + H2O (spontaneous)
Comments:
The enzyme catalyses the reversible conversion of carbamoyl phosphate and ADP to ATP and carbamate, which hydrolyses to ammonia and hydrogen carbonate. The physiological role of the enzyme is to generate ATP.
Links to other databases
Enzymes and pathways:
NC-IUBMB
,
BRENDA
,
DIAGRAM
,
ERGO
,
ExplorEnz
,
ENZYME@ExPASy
,
KEGG
,
MetaCyc
,
NIST 74
,
UniPathway
Gene Ontology:
GO:0008804
CAS Registry Number:
9026-69-1
References
-
Crystalline carbamate kinase.Biochim. Biophys. Acta 118 : 211-215 (1966). [PMID: 4959296]
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Carbamyl phosphate synthesis in Neurospora crassa. I. Preliminary characterization of arginine-specific carbamyl phosphokinase.Biochim. Biophys. Acta 107 : 44-53 (1965). [PMID: 5857367]
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The metabolism of arginine in Serratia marcescens. II. Carbamyladenosine diphosphate phosphoferase.Aust. J. Biol. Sci. 9 : 253-262 (1956).
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Carbamyl phosphate, the carbamyl donor in enzymatic citrulline synthesis.J. Am. Chem. Soc. 77 : 819-820 (1955).
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Enzymic conversion of agmatine to putrescine in Lathyrus sativus seedlings. Purification and properties of a multifunctional enzyme (putrescine synthase).J. Biol. Chem. 256 : 9532-9541 (1981). [PMID: 6895223]
[EC 2.7.2.2 created 1961, modified 2018]