Adenosylcobinamide phosphate synthase

Adenosylcobinamide-phosphate synthase (EC 6.3.1.10, CbiB) is an enzyme with systematic name adenosylcobyric acid:(R)-1-aminopropan-2-yl phosphate ligase (ADP-forming). This enzyme catalyses the following chemical reaction

(1) ATP + adenosylcobyric acid + (R)-1-aminopropan-2-yl phosphate ⇌ ADP + phosphate + adenosylcobinamide phosphate (2) ATP + adenosylcobyric acid + (R)-1-aminopropan-2-ol ⇌ ADP + phosphate + adenosylcobinamide

One of the substrates, (R)-1-aminopropan-2-yl phosphate, is produced by CobD (EC 4.1.1.81).