Biology:Citrullinase

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Short description: Enzyme
citrullinase
Identifiers
EC number3.5.1.20
CAS number59088-17-4
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO

In enzymology, a citrullinase (EC 3.5.1.20) is an enzyme that catalyzes the chemical reaction

L-citrulline + H2O [math]\displaystyle{ \rightleftharpoons }[/math] L-ornithine + CO2 + NH3

Thus, the two substrates of this enzyme are L-citrulline and H2O, whereas its 3 products are L-ornithine, CO2, and NH3.

This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amides. The systematic name of this enzyme class is L-citrulline N5-carbamoyldihydrolase. Other names in common use include citrulline ureidase, citrulline hydrolase, and L-citrulline 5-N-carbamoyldihydrolase.

References