(E)-caffeate + UDP-alpha-D-glucose => 1-O-[(E)-caffeoyl]-beta-D-glucose + UDP
(e)-caffeate + udp-alpha-d-glucose => 1-o-[(e)-caffeoyl]-beta-d-glucose + udp
(E)-caffeate + UDP-alpha-D-glucose => 1-O-[(E)-caffeoyl]-beta-D-glucose + UDP
(e)-caffeate + udp-alpha-d-glucose => 1-o-[(e)-caffeoyl]-beta-d-glucose + udp