obsolete pelargonidin 3-O-glucoside 7-O-glucosyltransferase (feruloyl-glucose dependent) activity (obsolete GO:0102515)
OBSOLETE. Catalysis of the reaction: pelargonidin 3-O-beta-D-glucoside + 1-O-feruloyl-beta-D-glucose = pelargonidin 3,7-di-O-beta-D-glucoside + ferulate + H+.