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Identification of antigenic residues on apamin recognized by polyclonal antibodies

Identification of antigenic residues on apamin recognized by polyclonal antibodies

Molecular Immunology 27(1): 37-44

The structural requirements for antigenic recognition of apamin.sbd.an 18-amino acid, disulfide-bridged peptide.sbd.by rabbit antibodies were defined using a set of 18 apamin analogs in a competition liquid-phase radioimmunoassay. Some residues contribute considerably to antigenic recognition, e.g. Ala10, Arg13, and others to a lesser extent, e.g. Arg14, Glu7 and Thr8. The N- and C-terminal moieties of apamin are less antigenically important. These findings suggest that a good part of antibody specificities are directed to the central tightly folded part of the molecule. They are consistant with the observation that in saturating conditions, labeled apamin can, on average, bind one specific Fab fragment.

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Accession: 002402263

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PMID: 1690348

DOI: 10.1016/0161-5890(90)90058-8

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