1VIJ:
reference: Structure of HOE/BAY 793 complexed to human immunodeficiency virus (HIV-1) protease in two different crystal forms--structure/function relationship and influence of crystal packing., Lange-Savage G, Berchtold H, Liesum A, Budt KH, Peyman A, Knolle J, Sedlacek J, Fabry M, Hilgenfeld R, Eur J Biochem 1997 Sep 1;248(2):313-22. PMID: 9346283

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