Griffonia (Bandeiraea) simplicifolia lectin I (GSL I, BSL I)

isolated from Griffonia (Bandeiraea) simplicifolia seeds 
GSL I is a family of glycoproteins with molecular weights of approximately 115,000. There are two types of subunits, termed “A” and “B”, with slightly different molecular weights. These subunits combine to form tetrameric structures, resulting in five isolectins. The “A”-rich lectin preferentially agglutinates blood group A erythrocytes and thus appears to be specific for a-N-acetylgalactosamine residues, while the “B”-rich lectin preferentially agglutinates blood group B cells and is specific for a-galactose residues. Our GSL I is a mixture of the five isolectins. Binding appears to require divalent cations such as calcium and magnesium. GSL I has been reported to bind several glycoproteins including laminin. 
Inhibiting/Eluting Sugar: 200 mM galactose/200 mM N-acetylgalactosamine mixture