Biochem Biophys Res Commun 1989 Dec 15;1652:865-71.

The main immunogenic region of the nicotinic acetylcholine receptor: interaction of monoclonal antibodies with synthetic peptides.

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Monoclonal antibodies to the main immunogenic region of the nicotinic acetylcholine receptor have been studied with regard to their binding to synthetic peptides. It was found that monoclonal antibody 210 to the main immunogenic region binds to the synthetic fragment spanning residues 66 to 76 of the alpha subunits of the acetylcholine receptor from human muscle, but not to the homologous sequence from Xenopus. This parallels the reactivities of antibodies to the main immunogenic region with intact receptors from two species, and confirms the biological significance of the weak interactions observed between antibodies to this region and synthetic peptides. It also suggests that N alpha 68 and D alpha 71 are critical contact residues.

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