1HWR:
reference: Molecular recognition of cyclic urea HIV-1 protease inhibitors., Ala PJ, DeLoskey RJ, Huston EE, Jadhav PK, Lam PY, Eyermann CJ, Hodge CN, Schadt MC, Lewandowski FA, Weber PC, McCabe DD, Duke JL, Chang CH, J Biol Chem 1998 May 15;273(20):12325-31. PMID: 9575185

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