title: Requirement of the core structure of a complex-type glycopeptide for the binding to immobilized lentil- and pea-lectins.
abstract: Structural requirements for the binding of oligosaccharides and glycopeptides to immobilized lentil- and pea-lectins were investigated by use of radioactively-labeled glycopeptides and oligosaccharides. The results indicate that an intact 2-acetamido-2-deoxy-beta-D-glucopyranosyl residue at the reducing end of a complex-type oligosaccharide is essential for high-affinity binding to lentil lectin-Sepharose but not to concanavalin A-Sepharose and that an asparagine residue is required for the binding of a complex-type glycopeptide to pea lectin-Sepharose. In addition, interaction of a complex-type oligosaccharide with lentil lectin-Sepharose was enhanced by exposure of nonreducing, terminal 2-acetamido-2-deoxy-beta-D-glucopyranosyl groups, whereas interaction with pea lectin-Sepharose was enhanced only after exposure of nonreducing, terminal alpha-D-mannopyranosyl groups.
mesh_terms: D006020:Glycopeptides; D037102:Lectins; D009844:Oligosaccharides; D037121:Plant Lectins; D011485:Protein Binding; D012685:Sepharose; D013045:Species Specificity; D013329:Structure-Activity Relationship
chemical_list: D006020:Glycopeptides; D037102:Lectins; D009844:Oligosaccharides; D037121:Plant Lectins; C033619:lentil lectin; C036292:pea lectin; D012685:Sepharose