Catalysis of the reactions: a 3alpha-hydroxy bile acid CoA + NAD+ = a 3-oxo bile acid CoA + H+ + NADH.
Source:PMID:23836456,
RHEA:55380
Comment
Formerly EC:1.17.99.5. Was originally descibed as bile acid 7-dehydroxylase (PubMed:3549693). In fact, the 7-dehydroxylation process is catalyzed by multiple enzymes.