Home / Products / Lectins and Glycobiology Reagents / Lectins / Psophocarpus Tetragonolobus Lectin II Psophocarpus Tetragonolobus Lectin II Like PTL I, this lectin binds preferentially to N-acetylgalactosamine, with this sugar also being the most inhibitory monosaccharide. However, in contrast to PTL I, this lectin prefers the β anomeric configuration. PTL II shows a high affinity toward blood group H structures and the T-antigen. PTL I and PTL II also differ in their erythrocyte agglutinating properties. There are no products matching the selection.