label: 2-methylpropanoyl-CoA + oxidized [electron-transfer flavoprotein] + H(+) = (2E)-2-methylpropenoyl-CoA + reduced [electron-transfer flavoprotein]
label_lc: 2-methylpropanoyl-coa + oxidized [electron-transfer flavoprotein] + h(+) = (2e)-2-methylpropenoyl-coa + reduced [electron-transfer flavoprotein]