3HKF:
reference: Structure of the murine unglycosylated IgG1 Fc fragment., Feige MJ, Nath S, Catharino SR, Weinfurtner D, Steinbacher S, Buchner J, J Mol Biol. 2009 Aug 21;391(3):599-608. Epub 2009 Jun 24. PMID: 19559712

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