4QGI:
reference: Defective Hydrophobic Sliding Mechanism and Active Site Expansion in HIV-1 Protease Drug Resistant Variant Gly48Thr/Leu89Met: Mechanisms for the Loss of Saquinavir Binding Potency., Goldfarb NE, Ohanessian M, Biswas S, McGee Jr TD, Mahon BP, Ostrov DA, Garcia JP, Tang Y, McKenna R, Roitberg AE, Dunn BM, Biochemistry. 2014 Dec 16. PMID: 25513833

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