This domain is found at the N-terminal end of Lmo2446 protein from Listeria monocytogenes and similar proteins predominantly found in firmicutes and actinobacteria. Lmo2446 is a six-domain protein with with predicted glycoside hydrolase (GH) activity. This domain folds into a carbohydrate binding module (CBM)-like beta-sandwich [1,2].

1: Structure to function of an alpha-glucan metabolic pathway that promotes Listeria monocytogenes pathogenesis. Light SH, Cahoon LA, Halavaty AS, Freitag NE, Anderson WF; Nat Microbiol. 2016;2:16202. PMID:27819654

2: Transferase Versus Hydrolase: The Role of Conformational Flexibility in Reaction Specificity. Light SH, Cahoon LA, Mahasenan KV, Lee M, Boggess B, Halavaty AS, Mobashery S, Freitag NE, Anderson WF; Structure. 2017;25:295-304. PMID:28089449