Binding of Ricinus communis agglutinin (RCA 120) to carbohydrate receptors of human lymphocytes and erythrocytes is enth~pically driven. As in the case of simple saccharides, the AS cont~bution is always unfavorable to the interaction. This result is different from that observed for other lectins and might indicate that hydrophobic interactions do not play a dominant role in binding of RCA 120 to cell surfaces.
Ricinus communis agglutininHuman lymphocyte Lectin-cell surface interaction