ENTRY EC 6.3.4.2
NAME CTP synthase
UTP--ammonia ligase
CLASS Ligases
Forming carbon-nitrogen bonds
Other carbon--nitrogen ligases
SYSNAME UTP:ammonia ligase(ADP-forming)
REACTION ATP + UTP + NH3 = ADP + Orthophosphate + CTP
SUBSTRATE ATP
UTP
NH3
Glutamine
PRODUCT ADP
Orthophosphate
CTP
Glutamate
COMMENT Glutamine can replace NH3.
Glutamine amidotransferase domian (type G) has SH protease-
like catalytic residues.
PATHWAY PATH: MAP00240 Pyrimidine metabolism
DISEASE MIM: 123860 Cytidine 5'-triphosphate synthetase
MOTIF PS: PS00442 [PAS]-[LIVMFYT]-[LIVMFY]-G-[LIVMFY]-C-[LIVMFYN]-G-x-
[QE]-x-[LIVMFA]
GENES MJA: MJ1174(pyrG)
MTH: MTH419
ECO: b2780(pyrG)
HIN: HI1077(pyrG)
HPY: HP0349(pyrG)
BSU: ctrA(pyrG)
SYN: sll1443(pyrG)
SCE: YBL039C(URA7) YJR103W(URA8)
HSA: CTPS(Hs.84112)
DBLINKS University of Geneva ENZYME DATA BANK: 6.3.4.2
WIT (What Is There) Metabolic Reconstruction: 6.3.4.2
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