. "Catalysis of the reaction: carbamoyl phosphate + L-ornithine = phosphate + L-citrulline." . . "ornithine carbamoyltransferase activity" . "carbamoyl-phosphate:L-ornithine carbamoyltransferase activity" . "carbamylphosphate-ornithine transcarbamylase activity" . "citrulline phosphorylase activity" . "L-ornithine carbamoyltransferase activity" . "L-ornithine carbamyltransferase activity" . "L-ornithine transcarbamylase activity" . "ornithine carbamyltransferase activity" . "ornithine transcarbamylase activity" . "OTC activity" . "OTCase activity" . . .