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6.3.5.5: carbamoyl-phosphate synthase (glutamine-hydrolysing)

This is an abbreviated version!
For detailed information about carbamoyl-phosphate synthase (glutamine-hydrolysing), go to the full flat file.

Word Map on EC 6.3.5.5

Reaction

2 ATP +

L-glutamine
+
hydrogencarbonate
+
H2O
=
2 ADP
+
phosphate
+
L-glutamate
+
Carbamoyl phosphate

Synonyms

CAD, CAD carbamoyl-phosphate synthetase, CAD protein, Carbamoyl phosphate synthase (glutamine), carbamoyl phosphate synthetase, Carbamoyl phosphate synthetase (glutamine-hydrolyzing), carbamoyl phosphate synthetase 1, carbamoyl phosphate synthetase II, carbamoyl phosphate synthetase III, carbamoyl-phosphate synthetase, Carbamoyl-phosphate synthetase (glutamine-hydrolysing), carbamoyl-phosphate synthetase 2, Carbamoylphosphate synthase, Carbamoylphosphate synthetase, Carbamoylphosphate synthetase II, Carbamyl phosphate synthetase (glutamine), Carbamyl phosphate sythetase II, carbamylphosphate synthetase - aspartate transcarbamylase, CPA2, CPS, CPS II (glutamine-dependent), CPS III, CPS III (glutamine- and N-acetyl-L-glutamine-dependent), CPS1, CPSase, CPSase type II, CPSase-A, CPSase-P, CPSII, EC 2.7.2.9, Glutamine-dependent carbamyl phosphate synthetase, glutamine-hydrolyzing CPSase, MGG_04503, More, MtCPSs1, MtCPSs2, Synthase, carbamoylphosphate (glutamine), Synthetase, carbamoylphosphate (glutamine-hydrolyzing)

ECTree

     6 Ligases
         6.3 Forming carbon-nitrogen bonds
             6.3.5 Carbon-nitrogen ligases with glutamine as amido-N-donor
                6.3.5.5 carbamoyl-phosphate synthase (glutamine-hydrolysing)

Natural Substrates Products

Natural Substrates Products on EC 6.3.5.5 - carbamoyl-phosphate synthase (glutamine-hydrolysing)

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NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
2 ATP + L-Gln + HCO3-
2 ADP + phosphate + L-Glu + carbamoyl phosphate
show the reaction diagram
2 ATP + L-Gln + HCO3- + H+ + H2O
2 ADP + phosphate + L-glutamate + carbamoyl phosphate
show the reaction diagram
-
the product carbamoyl phosphate is utilized in the pyrimidine and arginine biosynthetic pathways
-
?
2 ATP + L-glutamine + HCO3- + H2O
2 ADP + phosphate + L-glutamate + carbamoyl phosphate
show the reaction diagram
2 ATP + L-glutamine + HCO3- + H2O + H+
2 ADP + phosphate + L-glutamate + carbamoyl phosphate
show the reaction diagram
ATP + L-Gln + HCO3-
?
show the reaction diagram
ATP + L-glutamine + HCO3- + H2O
2 ADP + phosphate + L-glutamate + carbamoyl phosphate
show the reaction diagram
-
there is no preferential partitioning of carbamoyl phosphate between the arginine and pyrimidine biosynthetic pathways. Channeling must occur during the dynamic association of coupled enzymes pairs. The interaction of carbamoyl-phosphate synthetase/aspartate transcarbamoylase is demonstrated by the unexpectedly weak inhibition of the coupled reaction by the bisubstrate analog, N-(phosphonacetyl)-L-aspartate. In the coupled reaction, the effective concentration of carbamoyl phosphate in the vicinity of the aspartate transcarbamoylase active site is 96fold higher than the concentration in the bulk phase. Channeling probably plays an essential role in protecting this very unstable intermediate of metabolic pathways performing at extreme temperatures
-
-
?
ATP + L-glutamine + HCO3- + H2O
ADP + phosphate + L-glutamate + carbamoyl phosphate
show the reaction diagram
additional information
?
-