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In enzymology, an ornithine cyclodeaminase () is an enzyme that catalyzes the chemical reaction L-ornithine L-proline + NH4 Hence, this enzyme has one substrate, L-ornithine, and two products, L-proline and NH4. This enzyme belongs to the family of lyases, specifically ammonia lyases, which cleave carbon-nitrogen bonds. The systematic name of this enzyme class is L-ornithine ammonia-lyase (cyclizing; L-proline-forming). Other names in common use include ornithine cyclase, ornithine cyclase (deaminating), and L-ornithine ammonia-lyase (cyclizing). This enzyme participates in arginine and proline biosynthesis. It employs one cofactor, NAD+. ==Structural studies== As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes and . 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ornithine cyclodeaminase」の詳細全文を読む スポンサード リンク
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