In enzymology, a N-acetylornithine carbamoyltransferase (EC 2.1.3.9) is an enzyme that catalyzes the chemical reaction
Thus, the two substrates of this enzyme are carbamoyl phosphate and N2-acetyl-L-ornithine, whereas its two products are phosphate and N-acetyl-L-citrulline.
This enzyme belongs to the family of transferases that transfer one-carbon groups, specifically the carboxy- and carbamoyltransferases. The systematic name of this enzyme class is carbamoyl-phosphate:N2-acetyl-L-ornithine carbamoyltransferase. Other names in common use include acetylornithine transcarbamylase, N-acetylornithine transcarbamylase, AOTC, and carbamoyl-phosphate:2-N-acetyl-L-ornithine carbamoyltransferase.
As of late 2007, 4 structures have been solved for this class of enzymes, with PDB accession codes 2G65, 2G68, 2G6A, and 2G6C.
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