2ZZO:
reference: X-ray Crystallographic Study of an HIV-1 Fusion Inhibitor with the gp41 S138A Substitution., Watabe T, Terakawa Y, Watanabe K, Ohno H, Nakano H, Nakatsu T, Kato H, Izumi K, Kodama E, Matsuoka M, Kitaura K, Oishi S, Fujii N, J Mol Biol. 2009 Jul 17. PMID: 19616557

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