Reaction: [(1→3)-β-D-glucosyl]n + phosphate = [(1→3)-β-D-glucosyl]n-1 + α-D-glucose 1-phosphate
Other name(s): laminarin phosphoryltransferase; 1,3-β-D-glucan:orthophosphate glucosyltransferase
Systematic name: (1→3)-β-D-glucan:phosphate α-D-glucosyltransferase
Comments: Acts on a range of β-1,3-oligoglucans, and on glucans of laminarin type. Different from EC 2.4.1.30 (1,3-β-oligoglucan phosphorylase) and EC 2.4.1.31 (laminaribiose phosphorylase).
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 37340-31-1
References:
1. Albrecht, G.J. and Kauss, H. Purification, crystallization and properties of a β-(1→3)-glucan phosphorylase from Ochromonas malhamensis. Phytochemistry 10 (1971) 1293-1298.