Griffonia (Bandeiraea) Simplicifolia Lectin I (GSL I, BSL I), Biotinylated

GSLI is a family of glycoproteins with a molecular weight of about 114 kDa. There are two types of subunits, called "A" and "B", with slightly different molecular weights. These subunits combine to form a tetramer structure, producing five isolates. A-rich lectins preferentially agglutinate group A red blood cells and therefore appear to be specific to α-n-acetylgalactosamine residues, while B-rich lectins preferentially agglutinate group B cells and are specific to α-galactosamine residues. Our GSLI is a mixture of five isolates. GSLI has been reported to bind to a variety of glycoproteins, including laminin. Biotinylated GSLI combines the appropriate amount of biotin to provide optimal staining properties for this lectin.