5NQW:
reference: Trapping IgE in a closed conformation by mimicking CD23 binding prevents and disrupts FcepsilonRI interaction., Jabs F, Plum M, Laursen NS, Jensen RK, Molgaard B, Miehe M, Mandolesi M, Rauber MM, Pfutzner W, Jakob T, Mobs C, Andersen GR, Spillner E, Nat Commun. 2018 Jan 2;9(1):7. doi: 10.1038/s41467-017-02312-7. PMID: 29295972

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