[(1->3)-beta-D-glucosyl](n) + UDP-alpha-D-glucose => [(1->3)-beta-D-glucosyl](n+1) + UDP + H(+)
[(1->3)-beta-d-glucosyl](n) + udp-alpha-d-glucose => [(1->3)-beta-d-glucosyl](n+1) + udp + h(+)
[(1->3)-beta-D-glucosyl](n) + UDP-alpha-D-glucose => [(1->3)-beta-D-glucosyl](n+1) + UDP + H(+)
[(1->3)-beta-d-glucosyl](n) + udp-alpha-d-glucose => [(1->3)-beta-d-glucosyl](n+1) + udp + h(+)