Structural determinants of Phaseolus vulgaris erythroagglutinating lectin for oligosaccharides.

The behaviors of oligosaccharides obtained by hydrazinolysis of asparagine-linked sugar chains in an erythroagglutinating phytohemagglutinin lectin-agarose column were examined to define the structural determinants required for the interaction of asparagine-linked sugars with erythroagglutinating phytohemagglutinin. The minimal structural unit required for erythroagglutinating phytohemagglutinin binding was (formula; see text) in which R1 and R2 represent either hydrogen or sugars and R3 represents either GlcNAc leads to Asn or (Fuc alpha 1 leads to 6)GlcNAcOT.