label: 3-methylbutanoyl-CoA + oxidized [electron-transfer flavoprotein] + H(+) => 3-methyl-(2E)-butenoyl-CoA + reduced [electron-transfer flavoprotein]
label_lc: 3-methylbutanoyl-coa + oxidized [electron-transfer flavoprotein] + h(+) => 3-methyl-(2e)-butenoyl-coa + reduced [electron-transfer flavoprotein]