This family of proteins is found in bacteria. Proteins in this family are typically between 168 and 189 amino acids in length. There is a conserved ALM sequence motif. This family is a membrane protein (FAD-SLDH) involved in oxidation of D-sorbitol to L-sorbose.

1: Molecular properties of membrane-bound FAD-containing D-sorbitol dehydrogenase from thermotolerant Gluconobacter frateurii isolated from Thailand. Toyama H, Soemphol W, Moonmangmee D, Adachi O, Matsushita K; Biosci Biotechnol Biochem. 2005;69:1120-1129. PMID:15973043