3-oxo-5beta-cholan-24-oate + NADH + H(+) = isolithocholate + NAD(+)
3-oxo-5beta-cholan-24-oate + nadh + h(+) = isolithocholate + nad(+)
3-oxo-5beta-cholan-24-oate + NADH + H(+) = isolithocholate + NAD(+)
3-oxo-5beta-cholan-24-oate + nadh + h(+) = isolithocholate + nad(+)