This domain is found in GH84C present in Clostridium perfringens. GH84C is a beta-N-acetylglucosaminidase. This domain is a family 32 carbohydrate binding module (CBM) which preferentially recognizes the non-reducing terminus of N-acetyllactosamine [1].

1: 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