ID 1.1.1.181 DE cholest-5-ene-3beta,7alpha-diol 3beta-dehydrogenase. AN 3beta-hydroxy-Delta(5)-C27-steroid oxidoreductase. CA 7alpha-hydroxycholesterol + NAD(+) = 7alpha-hydroxycholest-4-en-3-one + CA H(+) + NADH. CC -!- Highly specific for 3beta-hydroxy-C27-steroids with Delta(5)-double CC bond. DR Q9H2F3, 3BHS7_HUMAN; Q9EQC1, 3BHS7_MOUSE; O35048, 3BHS7_RAT ; //