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  • Title: Binding of monoclonal antibody A2B5 to gangliosides.
    Author: Kundu SK, Pleatman MA, Redwine WA, Boyd AE, Marcus DM.
    Journal: Biochem Biophys Res Commun; 1983 Nov 15; 116(3):836-42. PubMed ID: 6651849.
    Abstract:
    Monoclonal antibody A2B5 (Eisenbarth et al, Proc. Nat. Acad. Sci. (1979, 76:4913-4917), which reacts with neurons, thymic epithelium and peptide-hormone secreting cells of several species, was reported to react specifically with brain tetrasialogangliosides. We have found that A2B5 binds to gangliosides GQ1b, GD3, GD2, disialolactoneotetraosylceramide, and probably to GT1a, when assayed by an immunostaining procedure that detects binding of antibody to gangliosides on a thin-layer plate. Additional data obtained by complement fixation revealed that this antibody reacted most strongly with ganglioside GQ1b almost as well with disialogangliosides GD3, GD2 and disialolactoneotetraosylceramide, weakly with GD1b and GT1b, and very weakly with GM3 and GD1a. These data indicate that A2B5 cannot be regarded as a specific reagent for the recognition of tetrasialogangliosides.
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