Skip to main content
Immunology logoLink to Immunology
. 1979 Mar;36(3):557–561.

Induction of an Fc conformational change by binding of antigen: the generation of protein A-reactive sites in chicken immunoglobulin.

T Barkas, C M Watson
PMCID: PMC1457583  PMID: 437844

Abstract

Chicken antibody alone does not bind to Staphylococcus aureus or protein A-Sepharose. Immune complexes containing chicken antibodies do bind, however, showing protein A-binding sites exist on the molecules. Binding does not occur via the antigen contained in the complex. Complexes formed in far antigen excess also bind, suggesting that an induced conformational change in the Fc region of the immunoglobulin occurs but only a fraction of the total chicken antibody is reactive.

Full text

PDF
557

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Barkas T., Harrison R., Lunt G. G., Watson C. M., Harvey A. L., Robertson J. G. Development of transient myasthenia-like symptoms in chickens injected with acetylcholine receptor from Torpedo marmorata [proceedings]. Biochem Soc Trans. 1978;6(3):634–636. doi: 10.1042/bst0060634. [DOI] [PubMed] [Google Scholar]
  2. Barkas T., Harrison R., Lunt G. G., Watson C. M. Immunochemistry of the acetylcholine receptor [proceedings]. Biochem Soc Trans. 1978;6(3):636–638. doi: 10.1042/bst0060636. [DOI] [PubMed] [Google Scholar]
  3. Brown J. C., Koshland M. E. Evidence for a long-range conformational change induced by antigen binding to IgM antibody. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5682–5686. doi: 10.1073/pnas.74.12.5682. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Foppoli J. M., Wakeland E. K., Benedict A. A. Structural and genetic studies on chicken 7S immunoglobulin allotypes. IV. The presence of an unexpected chicken immunoglobulin heavy chain allotype: subclass or pseudoallele? J Immunol. 1978 Mar;120(3):812–817. [PubMed] [Google Scholar]
  5. Forsgren A., Sjöquist J. "Protein A" from S. aureus. I. Pseudo-immune reaction with human gamma-globulin. J Immunol. 1966 Dec;97(6):822–827. [PubMed] [Google Scholar]
  6. Jaton J. C., Huser H., Braun D. G., Givol D., Pecht I., Schlessinger J. Conformational changes induced in a homogeneous anti-type III pneumococcal antibody by oligosaccharides of increasing size. Biochemistry. 1975 Dec 2;14(24):5312–5315. doi: 10.1021/bi00695a014. [DOI] [PubMed] [Google Scholar]
  7. Kronvall G., Seal U. S., Finstad J., Williams R. C., Jr Phylogenetic insight into evolution of mammalian Fc fragment of gamma G globulin using staphylococcal protein A. J Immunol. 1970 Jan;104(1):140–147. [PubMed] [Google Scholar]
  8. LOWRY O. H., ROSEBROUGH N. J., FARR A. L., RANDALL R. J. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed] [Google Scholar]
  9. Lindstrom J. Immunological studies of acetylcholine receptors. J Supramol Struct. 1976;4(3):389–403. doi: 10.1002/jss.400040310. [DOI] [PubMed] [Google Scholar]
  10. Schlessinger J., Steinberg I. Z., Givol D., Hochman J., Pecht I. Antigen-induced conformational changes in antibodies and their Fab fragments studied by circular polarization of fluorescence. Proc Natl Acad Sci U S A. 1975 Jul;72(7):2775–2779. doi: 10.1073/pnas.72.7.2775. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Immunology are provided here courtesy of British Society for Immunology

RESOURCES