label: 3-methylbutanoyl-CoA dehydrogenase activity
label_lc: 3-methylbutanoyl-coa dehydrogenase activity
description: "Catalysis of the reaction: 3-methylbutanoyl-CoA + H+ + oxidized [electron-transfer flavoprotein] = 3-methyl-(2E)-butenoyl-CoA + reduced [electron-transfer flavoprotein]."