This Rossmann-related domain is found at the N-terminal end of the C-terminal domain region of the cellulose-binding protein Sde182 from Saccharophagus degradans (Swiss:Q21PD3), which seems to have capacity to bind plant carbohydrates. This domain shows an alpha/beta configuration with a central beta-sheet of eight beta-strands and 12 alpha-helices. It is structurally similar to pyrimidine-specific ribonucleoside hydrolases (NH) [1]. This domain is also found in other uncharacterised bacterial and fungal proteins.

1: Ab initio phasing of a nucleoside hydrolase-related hypothetical protein from Saccharophagus degradans that is associated with carbohydrate metabolism. Hehemann JH, Marsters C, Boraston AB; Proteins. 2011;79:2992-2998. PMID:21905122