(2E)-2-hydroxypenta-2,4-dienoate + fumarate + H(+) => (2E,4Z,7E)-2-hydroxy-6-oxonona-2,4,7-trienedioate + H2O
(2e)-2-hydroxypenta-2,4-dienoate + fumarate + h(+) => (2e,4z,7e)-2-hydroxy-6-oxonona-2,4,7-trienedioate + h2o
(2E)-2-hydroxypenta-2,4-dienoate + fumarate + H(+) => (2E,4Z,7E)-2-hydroxy-6-oxonona-2,4,7-trienedioate + H2O
(2e)-2-hydroxypenta-2,4-dienoate + fumarate + h(+) => (2e,4z,7e)-2-hydroxy-6-oxonona-2,4,7-trienedioate + h2o