apigenin + UDP-alpha-D-glucose = isovitexin + UDP + H(+)
apigenin + udp-alpha-d-glucose = isovitexin + udp + h(+)
apigenin + UDP-alpha-D-glucose = isovitexin + UDP + H(+)
apigenin + udp-alpha-d-glucose = isovitexin + udp + h(+)