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The IgA receptor complex: a two-for-one deal

IgA triggers immune responses by binding to Fc receptors on cells of the immune system. The structure of IgA1-Fc in a complex with two molecules of FcαRI provides clues that may explain the selectivity of IgA-mediated immune events.

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Figure 1: Comparison of the IgA-Fc–FcαRI with other antibody receptor complexes.

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Wurzburg, B., Jardetzky, T. The IgA receptor complex: a two-for-one deal. Nat Struct Mol Biol 10, 585–587 (2003). https://doi.org/10.1038/nsb0803-585

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