This is the C-terminal domain of endo-glycoceramidase II (EGC), a membrane-associated family 5 glycosidase Pfam:PF00150. The C-terminal domain assumes a beta-sandwich fold, which resembles that of many carbohydrate-binding modules [1].

1: Structural and mechanistic analyses of endo-glycoceramidase II, a membrane-associated family 5 glycosidase in the Apo and GM3 ganglioside-bound forms. Caines ME, Vaughan MD, Tarling CA, Hancock SM, Warren RA, Withers SG, Strynadka NC; J Biol Chem. 2007;282:14300-14308. PMID:17329247