3VIE:
reference: Broad antiviral activity and crystal structure of HIV-1 fusion inhibitor sifuvirtide., Yao X, Chong H, Zhang C, Waltersperger S, Wang M, Cui S, He Y, J Biol Chem. 2012 Feb 24;287(9):6788-96. Epub 2012 Jan 6. PMID: 22228771

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