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BRENDA KEGG MetaCyc

urea cycle (BRENDA)

:= BRENDA, := KEGG, := MetaCyc, := SABIO-RK
:= amino acid sequences := show the reaction diagram
EC Number
Reaction
Pathways
Reaction IDs
Stoichiometry Check
Missing Substrate
Missing Product
Commentary
Remark
carbamate kinase
ATP + NH3 + hydrogencarbonate = ADP + carbamoyl phosphate + H2O
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: two-step reaction (see R01395+R12185)
natural substrates
citrullinase
L-citrulline + H2O = L-ornithine + CO2 + NH3
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natural substrates
beta-ureidopropionase
L-citrulline + H2O = L-ornithine + CO2 + NH3
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natural substrates
allophanate hydrolase
urea-1-carboxylate + H2O = 2 CO2 + 2 NH3
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: The yeast enzyme (but not that from green algae) also catalyses the reaction of EC 6.3.4.6 urea carboxylase, thus bringing about the hydrolysis of urea to CO2 and NH3 in the presence of ATP and bicarbonate. R00774 (6.3.4.6)
natural substrates
urea carboxylase
ATP + urea + HCO3- + H+ = ADP + phosphate + urea-1-carboxylate
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natural substrates