ID   1.2.1.25
DE   2-oxoisovalerate dehydrogenase (acylating).
CA   3-methyl-2-oxobutanoate + CoA + NAD(+) = 2-methylpropanoyl-CoA + CO(2) +
CA   NADH.
CC   -!- Also acts on (S)-3-methyl-2-oxopentanoate and 4-methyl-2-
CC       oxopentanoate.
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