all-trans-4-oxoretinoate 1-O-(beta-D-glucuronate) + UDP => all-trans-4-oxoretinoate + UDP-alpha-D-glucuronate
all-trans-4-oxoretinoate 1-o-(beta-d-glucuronate) + udp => all-trans-4-oxoretinoate + udp-alpha-d-glucuronate