Acetylornithine deacetylase () is an enzyme that catalyzes the chemical reaction
The enzyme characterised from Escherichia coli hydrolyses N(2)-acetyl-L-ornithine to the amino acid, ornithine, and acetic acid. The reaction is the final step in the biosynthesis of ornithine in plants such as Arabidopsis thaliana. The presence of this enzyme has been shown to be one factor in enhancing the aroma of basmati rice.
This enzyme is a hydrolase, one acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amides. The systematic name of this enzyme class is N2-acetyl-L-ornithine amidohydrolase. Other names in use include acetylornithinase, N-acetylornithinase, and 2-N-acetyl-L-ornithine amidohydrolase.
Structural studies As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes and .
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