This family of proteins is found in eukaryotes. Proteins in this family are typically between 285 and 331 amino acids in length. BSMAP has a putative transmembrane domain and is predicted to be a type I membrane glycoprotein.

1: BSMAP, a novel protein expressed specifically in the brain whose gene is localized on chromosome 19p12. Elson GC, de Coignac AB, Aubry JP, Delneste Y, Magistrelli G, Holzwarth J, Bonnefoy JY, Gauchat JF; Biochem Biophys Res Commun. 1999;264:55-62. PMID:10527841