Enzymatic reactions [BR:br08201]
1. Oxidoreductase reactions
1.3 Acting on the CH-CH group of donors
1.3.1 With NAD+ or NADP+ as acceptor
1.3.1.114
R12107 12alpha-Hydroxy-3-oxocholan-24-oyl-CoA + NAD+ <=> 12alpha-Hydroxy-3-oxochol-4-en-24-oyl-CoA + NADH + H+