label: (E)-3-(indol-3-yl)acrylate + reduced [electron-transfer flavoprotein] => indole-3-propanoate + oxidized [electron-transfer flavoprotein] + H(+)
label_lc: (e)-3-(indol-3-yl)acrylate + reduced [electron-transfer flavoprotein] => indole-3-propanoate + oxidized [electron-transfer flavoprotein] + h(+)