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Schematic showing the HEK 293-F C575A panel of glycan mutants from Fig. 1 in which the Cys-309 and Leu-310 are changed to leucine and histidine, as found in the native IgG1 Fc sequence to create the C309L/C575A panel of mutants. Stars indicate the hinge Asn-221, the Cγ2 Asn-297, and the tailpiece Asn-563 glycan sites.
