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Specific interaction of human Tamm-Horsfall gylcoprotein with leucoagglutinin, a lectin from Phaseolus vulgaris (red kidney bean).

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PMC
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  • Research Article
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  • Biology

Abstract

Human Tamm-Horsfall glycoprotein inhibits lymphocyte transformation induced by leucoagglutinin and haemagglutinin from Phaseolus vulgaris (red kidney bean). The glycoprotein interacts with the two lectins, giving insoluble precipitates. The interaction with leucoagglutinin is highly specific, and the shape of the precipitin curve is that of an antigen-antibody reaction; precipitation is specifically inhibited by N-acetyl-D-galactosamine. Results are discussed, and it is suggested that inhibition of lymphocyte transformation is due to competition between human Tamm-Horsfall glycoprotein and carbohydrate receptors on lymphocytes for the two lectins. The interaction between human Tamm-Horsfall glycoprotein and Phaseolus vulgaris lectins has been used to develop a one-step procedure for the separation of the two lectins by affinity chromatography on (human Tamm-Horsfall-glycoprotein)-Sepharose.

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