obsolete trans-4-(1'-hydroxynaphth-2'-yl)-2-oxobut-3-enoate hydratase-aldolase activity (obsolete GO:0018808)
OBSOLETE. Catalysis of the reaction: trans-4-(1'-hydroxynaphth-2'-yl)-2-oxobut-3-enoate + H2O = pyruvate + 1-hydroxy-2-naphthaldehyde.