Trans-o-hydroxybenzylidenepyruvate hydratase-aldolase

Trans-o-hydroxybenzylidenepyruvate hydratase-aldolase (EC4.1.2.45, 2'-hydroxybenzalpyruvate aldolase, NsaE, tHBPA hydratase-aldolase) is an enzyme with systematic name (3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate hydro-lyase. This enzyme catalyses the following chemical reaction