label: isoursodeoxycholate 7-beta-dehydrogenase (NAD+) activity
label_lc: isoursodeoxycholate 7-beta-dehydrogenase (nad+) activity
description: "Catalysis of the reaction: 3beta,7beta-dihydroxy-5beta-cholan-24-oate + NAD+ = 3beta-hydroxy-7-oxo-5beta-cholan-24-oate + H+ + NADH."