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Bacterial Fc Receptors

Abstract

Unique proteins on the surface of certain bacteria bind selectively and with high affinity to the Fc region of various species of IgG. The interaction of bacterial Fc receptors with constant region determinants on the heavy chain of the IgG molecule does not influence the ability of the antibody to recognize its antigen. This property makes these receptors valuable tracers for quantitation of antigen–antibody complexes. The majority of studies to date have focused on the type I Fc receptor from Staphylococcus aureus more frequently designated as protein A. In this report we discuss the limitations of protein A and describe the properties of a second generation of bacterial Fc receptors that should find broad applications in immunochemistry, immuno–histology, and immuno–electronmicroscopy.

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Boyle, M., Reis, K. Bacterial Fc Receptors. Nat Biotechnol 5, 697–703 (1987). https://doi.org/10.1038/nbt0787-697

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