(2E)-glutaconyl-CoA + H(+) <=> (2E)-butenoyl-CoA + CO2
(2e)-glutaconyl-coa + h(+) <=> (2e)-butenoyl-coa + co2
(2E)-glutaconyl-CoA + H(+) <=> (2E)-butenoyl-CoA + CO2
(2e)-glutaconyl-coa + h(+) <=> (2e)-butenoyl-coa + co2