Arachis hypogaea agglutinin (PNA) is purified by affinity chromatography and is consisting of four subunits of approximately 27,000 each. This lectin has an isoelectric point between pH 5.5 and pH 6.5. It has a carbohydrate specificity for Galβ3GalNAc with an eluting sugar of galactose. Galactose and lactose are poor inhibitors while disaccharide Gal β(1->3)GalNAc and desialylated human erythrocyte N-substance (T-antigen which is present in many M and N blood groups) are potent inhibitors of PNA. Although extracts of Arachis hypogaea do not agglutinate untreated or trypsin-treated human erythrocytes, PNA has been known to agglutinate neuraminidase-treated human red blood cells. PNA may be used for clinical determination of T-polyagglutinability of erythrocytes and probing cell membranes of normal and malignant cells. This lectin can be of use in characterization of tumor-specific antigens on the surface of malignant cells. It can be employed in the fractionation of stem cells in mice for use in bone marrow transplantation across histocompatibility barriers.

Specifications:
• Source: Arachis hypogaea (Peanut)
• Activity: Less than 1 µg/ml will agglutinate human erythrocytes neuraminidase treatment of the cells.
• Carbohydrate Specificity: Terminal ß-Galactose.
• Inhibitory Carbohydrate: Lactose > ß-Galactose.
• Mitogenic Activity: No
• Divalent Ions Required: Ca2+, Mg2+

Storage and Stability:
Store frozen at -20ºC in amber vials or covered with foil in appropriate aliquot sizes. Avoid freeze thaw cycles. Can be stored at 2-8°C for short term use

Application

Blotting, Glycobiology, Immunocytochemistry, Immunohistochemistry, Immunofluorescence

References

Rougé, P., Culerrier, R., Granier, C., Rancé, F., & Barre, A. (2010). Characterization of IgE-binding epitopes of peanut (Arachis hypogaea) PNA lectin allergen cross-reacting with other structurally related legume lectins. Molecular immunology, 47(14), “2366. https://doi.org/10.1016/j.molimm.2010.05.006

Sleiman, M. H., Csonka, R., Arbez-Gindre, C., Heropoulos, G. A., Calogeropoulou, T., Signorelli, M., Schiraldi, A., Steele, B. R., Fessas, D., & Micha-Screttas, M. (2015). Binding and stabilisation effects of glycodendritic compounds with peanut agglutinin. International journal of biological macromolecules, 80, “701. https://doi.org/10.1016/j.ijbiomac.2015.07.036