hexosyltransferase activity 1,3-beta-oligoglucan phosphorylase activity https://github.com/geneontology/go-ontology/issues/30193 MetaCyc:13-BETA-OLIGOGLUCAN-PHOSPHORYLASE-RXN beta-1,3-oligoglucan phosphorylase activity RHEA:16041 Catalysis of the reaction: [oligomeric (1->3)-beta-D-glucosyl](n) + phosphate = [(1->3)-beta-D-glucosyl](n-1) + alpha-D-glucose 1-phosphate. beta-1,3-oligoglucan:orthophosphate glucosyltransferase II activity GO:0047515 molecular_function 1,3-beta-D-oligoglucan:phosphate alpha-D-glucosyltransferase activity EC:2.4.1.30