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Close-up view on the Tyr296 loop. (A) View on the region surrounding Tyr296 of the afucosylated Fc fragment (blue) in complex with glycosylated FcγRIIIa (cyan). (B) Close-up view on the loop regions around Tyr296 of the Fc fragment and Lys128 (125 in FcγRIIIb). In blue the afucosylated complex structure is shown, in magenta the fucosylated Fc complex, in yellow 1T83 (22), in gray 1E4K (4).
