prunetin + UDP-alpha-D-glucuronate => prunetin-4'-O-beta-D-glucuronide + UDP
prunetin + udp-alpha-d-glucuronate => prunetin-4'-o-beta-d-glucuronide + udp
prunetin + UDP-alpha-D-glucuronate => prunetin-4'-O-beta-D-glucuronide + UDP
prunetin + udp-alpha-d-glucuronate => prunetin-4'-o-beta-d-glucuronide + udp