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GSLI is a family of glycoproteins with a molecular weight of approximately 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 heteroglectins. A-rich lectins preferentially agglutinate type A red blood cells and therefore appear to be specific to α-n-acetylgalactosamine residues, while B-rich lectins preferentially agglutinate type B blood cells and are specific to α-galactosamine residues. Our GSLI is a mixture of five heteroglectins. GSLI has been reported to bind a variety of glycoproteins, including laminin. Fluorescein-labeled GSLI has the appropriate amount of fluorescent dye to provide optimal staining properties for this lectin. The conjugated compound basically does not contain uncoupled fluorescent dyes.
