N-succinylornithine carbamoyltransferase (, succinylornithine transcarbamylase, N-succinyl-L-ornithine transcarbamylase, SOTCase) is an enzyme with systematic name carbamoyl phosphate:N2-succinyl-L-ornithine carbamoyltransferase. It catalyses the following chemical reaction
The enzyme converts N(2)-succinyl-L-ornithine to N(2)-succinyl-L-citrulline by transferring a carbamoyl group from carbamoyl phosphate. It is specific for N-succinyl-L-ornithine and was characterised from Bacteroides fragilis. It differs in structure from the enzyme N-acetylornithine carbamoyltransferase in only one amino acid at the active site.
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