ID 1.3.8.4 DE isovaleryl-CoA dehydrogenase. CA 3-methylbutanoyl-CoA + H(+) + oxidized [electron-transfer flavoprotein] = CA 3-methyl-(2E)-butenoyl-CoA + reduced [electron-transfer flavoprotein]. CC -!- Contains a tightly-bound FAD cofactor. CC -!- Pentanoate can act as donor. CC -!- Formerly EC 1.3.99.10. DR Q9SWG0, IVD_ARATH ; Q3SZI8, IVD_BOVIN ; P34275, IVD_CAEEL ; DR P26440, IVD_HUMAN ; Q9JHI5, IVD_MOUSE ; Q75IM9, IVD_ORYSJ ; DR Q5RBD5, IVD_PONAB ; P12007, IVD_RAT ; Q9FS87, IVD_SOLTU ; //