This family consists of bacterial rhamnosidase A and B enzymes. This domain is probably involved in substrate recognition.

1: The thermostable alpha-L-rhamnosidase RamA of Clostridium stercorarium: biochemical characterization and primary structure of a bacterial alpha-L-rhamnoside hydrolase, a new type of inverting glycoside hydrolase. Zverlov VV, Hertel C, Bronnenmeier K, Hroch A, Kellermann J, Schwarz WH; Mol Microbiol 2000;35:173-179. PMID:10632887