3P30:
reference: Distinct conformational states of HIV-1 gp41 are recognized by neutralizing and non-neutralizing antibodies., Frey G, Chen J, Rits-Volloch S, Freeman MM, Zolla-Pazner S, Chen B, Nat Struct Mol Biol. 2010 Dec;17(12):1486-91. Epub 2010 Nov 14. PMID: 21076402

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