This domain is located at the C-terminus of proteins that are members of family 84 glycoside hydrolases.These enzymes directly hydrolyse O-GlcNAcylated peptides/proteins. This domain folds into a five helical bundle with up-and-down topology. It may function in substrate binding or recognition.

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2: GlcNAcstatin: a picomolar, selective O-GlcNAcase inhibitor that modulates intracellular O-glcNAcylation levels. Dorfmueller HC, Borodkin VS, Schimpl M, Shepherd SM, Shpiro NA, van Aalten DM; J Am Chem Soc. 2006;128:16484-16485. PMID:17177381

3: Portrait of an enzyme, a complete structural analysis of a multimodular {beta}-N-acetylglucosaminidase from Clostridium perfringens. Ficko-Blean E, Gregg KJ, Adams JJ, Hehemann JH, Czjzek M, Smith SP, Boraston AB; J Biol Chem. 2009;284:9876-9884. PMID:19193644

4: Cell-penetrant, nanomolar O-GlcNAcase inhibitors selective against lysosomal hexosaminidases. Dorfmueller HC, Borodkin VS, Schimpl M, Zheng X, Kime R, Read KD, van Aalten DM; Chem Biol. 2010;17:1250-1255. PMID:21095575

5: Synergy of peptide and sugar in O-GlcNAcase substrate recognition. Schimpl M, Borodkin VS, Gray LJ, van Aalten DM; Chem Biol. 2012;19:173-178. PMID:22365600