(3E,5R)-5-carboxy-2-oxohept-3-enedioate + H(+) => (4Z)-2-oxohept-4-enedioate + CO2
(3e,5r)-5-carboxy-2-oxohept-3-enedioate + h(+) => (4z)-2-oxohept-4-enedioate + co2
(3E,5R)-5-carboxy-2-oxohept-3-enedioate + H(+) => (4Z)-2-oxohept-4-enedioate + CO2
(3e,5r)-5-carboxy-2-oxohept-3-enedioate + h(+) => (4z)-2-oxohept-4-enedioate + co2