Members of this family adopt an eight-stranded antiparallel beta jelly roll configuration, with the beta strands arranged into two sheets. They are similar in topology to many viral capsid proteins, as well as lectins and several glucanases. The domain allows the protein to bind sugars and catalyses the complete removal of N-linked oligosaccharide chains from glycoproteins [1].

1: The three-dimensional structure of PNGase F, a glycosylasparaginase from Flavobacterium meningosepticum. Norris GE, Stillman TJ, Anderson BF, Baker EN; Structure. 1994;2:1049-1059. PMID:7881905