6OHY:
reference: The Chimpanzee SIV Envelope Trimer: Structure and Deployment as an HIV Vaccine Template., Andrabi R, Pallesen J, Allen JD, Song G, Zhang J, de Val N, Gegg G, Porter K, Su CY, Pauthner M, Newman A, Bouton-Verville H, Garces F, Wilson IA, Crispin M, Hahn BH, Haynes BF, Verkoczy L, Ward AB, Burton DR, Cell Rep. 2019 May 21;27(8):2426-2441.e6. doi: 10.1016/j.celrep.2019.04.082. PMID: 31116986

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