ID 1.2.1.40 DE 3-alpha,7-alpha,12-alpha-trihydroxycholestan-26-al 26-oxidoreductase. AN 3-alpha,7-alpha,12-alpha-trihydroxycholestan-26-al 26-dehydrogenase. CA (25R)-3-alpha,7-alpha,12-alpha-trihydroxy-5-beta-cholestan-26-al + NAD(+) CA + H(2)O = (25R)-3-alpha,7-alpha,12-alpha-trihydroxy-5-beta-cholestan-26- CA oate + NADH. //