Glycoside phosphorylases catalyze the phosphorolysis of oligosaccharides into sugar phosphates [1]. This domain is the C-terminal domain found in the L. phytofermentans SOGP (sophoro-oligosaccharide beta-1,2-gluco-phosphorylase) [1].

1: Mechanistic insight into the substrate specificity of 1,2-beta-oligoglucan phosphorylase from Lachnoclostridium phytofermentans. Nakajima M, Tanaka N, Furukawa N, Nihira T, Kodutsumi Y, Takahashi Y, Sugimoto N, Miyanaga A, Fushinobu S, Taguchi H, Nakai H; Sci Rep. 2017;7:42671. PMID:28198470