Reaction catalyzed by 1,3-beta-oligoglucan phosphorylase (2.4.1.30), 1,3-beta-D-glucan phosphorylase (2.4.1.97)

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