Term Name:	precorrin-3B synthase activity
Synonyms:	CobG, precorrin-3A,NADH:oxygen oxidoreductase (20-hydroxylating), precorrin-3X synthase activity
Definition:	Catalysis of the reaction: H+ + NADH + O2 + precorrin-3A = H2O + NAD+ + precorrin-3B.
Ontology:	GO: Molecular Function [GO:0043818]    QuickGO    AmiGO