ID 1.1.1.178 DE 3-hydroxy-2-methylbutyryl-CoA dehydrogenase. AN 2-methyl-3-hydroxybutyryl-CoA dehydrogenase. CA (2S,3S)-3-hydroxy-2-methylbutanoyl-CoA + NAD(+) = 2-methyl-3-oxobutanoyl- CA CoA + H(+) + NADH. CC -!- Also acts, more slowly, on (2S,3S)-2-hydroxy-3-methylpentanoyl-CoA. DR O02691, HCD2_BOVIN ; Q99714, HCD2_HUMAN ; O08756, HCD2_MOUSE ; DR O70351, HCD2_RAT ; //