This domain is found in Alpha-L-rhamnosidase from Bacillus sp. (RhaB), a member of glycoside hydrolase (GH) family 78 that catalyses the hydrolytic release of rhamnose from polysaccharides and glycosides, degrading the bacterial biofilm gellan. RhaB is organised into five domains: Pfam:PF08531, this entry, Pfam:PF05592, Pfam:PF17389 and Pfam:PF17390. This domain shows a beta-sandwich structure with 13 beta-strands and two short helices [1].

1: Crystal structure of glycoside hydrolase family 78 alpha-L-Rhamnosidase from Bacillus sp. GL1. Cui Z, Maruyama Y, Mikami B, Hashimoto W, Murata K; J Mol Biol. 2007;374:384-398. PMID:17936784