Adenosylcobinamide GDP ribazoletransferase

Adenosylcobinamide-GDP ribazoletransferase (EC 2.7.8.26, CobS, cobalamin synthase, cobalamin-5'-phosphate synthase, cobalamin (5'-phosphate) synthase) is an enzyme with systematic name adenosylcobinamide-GDP:alpha-ribazole ribazoletransferase. This enzyme catalyses the following chemical reaction

(1) adenosylcobinamide-GDP + alpha-ribazole ⇌ GMP + adenosylcobalamin (2) adenosylcobinamide-GDP + alpha-ribazole 5'-phosphate ⇌ GMP + adenosylcobalamin 5'-phosphate