1U8G:
reference: Inhibitor binding at the protein interface in crystals of a HIV-1 protease complex., Brynda J, Rezacova P, Fabry M, Horejsi M, Stouracova R, Soucek M, Hradilek M, Konvalinka J, Sedlacek J, Acta Crystallogr D Biol Crystallogr 2004 Nov;60(Pt 11):1943-8. Epub 2004, Oct 20. PMID: 15502300

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