[(1->3)-beta-D-glucosyl](n-1) + alpha-D-glucose 1-phosphate => [(1->3)-beta-D-glucosyl](n) + phosphate
[(1->3)-beta-d-glucosyl](n-1) + alpha-d-glucose 1-phosphate => [(1->3)-beta-d-glucosyl](n) + phosphate
[(1->3)-beta-D-glucosyl](n-1) + alpha-D-glucose 1-phosphate => [(1->3)-beta-D-glucosyl](n) + phosphate
[(1->3)-beta-d-glucosyl](n-1) + alpha-d-glucose 1-phosphate => [(1->3)-beta-d-glucosyl](n) + phosphate