Arginine deiminase

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arginine deiminase
Identifiers
EC no. 3.5.3.6
CAS no. 9027-98-9
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IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
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PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / QuickGO
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NCBI proteins

In enzymology, an arginine deiminase (EC 3.5.3.6) is an enzyme that catalyzes the chemical reaction

L-arginine + H2O L-citrulline + NH3

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

This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amidines. The systematic name of this enzyme class is L-arginine iminohydrolase. Other names in common use include arginine dihydrolase, citrulline iminase, and L-arginine deiminase. This enzyme participates in arginine and proline metabolism. This enzyme is widely expressed in bacteria, including streptococcus and actinomyces. The bacterial arginine deiminase expression could be regulated by various environmental factors.

Recently, a new enzyme that catalyzes the chemical reaction

L-arginine + 2H2O L-ornithine + 2NH3 + CO2 was identified in cyanobacteria [1] which should be named as arginine dihydrolase.

Structural studies

As of late 2007, 7 structures have been solved for this class of enzymes, with PDB accession codes 1LXY, 1RXX, 1S9R, 2A9G, 2AAF, 2ABR, and 2ACI.

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References

  1. Zhang H, Liu YJ, Nie XQ, Liu LX, Hua Q, Zhao GP, Yang C (April 2018). "The cyanobacterial ornithine-ammonia cycle involves an arginine dihydrolase". Nature Chemical Biology. 14 (6): 575–581. doi:10.1038/s41589-018-0038-z. PMID   29632414. S2CID   4937151.