GCA_000020025.1 Npun_F0489 definition Orn/Lys/Arg decarboxylase, major region GCA_000020025.1 Npun_R1852 definition Orn/DAP/Arg decarboxylase 2 GCA_000020025.1 Npun_F4480 definition ornithine carbamoyltransferase GCA_000020025.1 Npun_R4958 definition acetylornithine and succinylornithine aminotransferase