GNA (commonly known as snowdrop lectin) was first discovered in snowdrop bulbsand isolated by performing affinity chromatography on immobilised mannose. GNA is amember of the “monocot mannose-binding” family of lectins because of its specificitytowards binding mannose. GNA is able to act as an insecticide because of its stability andresistance to proteolysis in the gut;GNA thus survives long enough to bind to gut cellswith terminal mannose sugars or longer oligosaccharide chains. Because of GNA'sadverse eff...