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• W2078814894 abstract "Inhibitors against human immunodeficiency virus type-1 (HIV-1) proteases are finely effective for anti-HIV-1 treatments. However, the therapeutic efficacy is reduced by the rapid emergence of inhibitor-resistant variants of the protease. Among patients who failed in the inhibitor nelfinavir (NFV) treatment, D30N, N88D, and L90M mutations of HIV-1 protease are often observed. Despite the serious clinical problem, it is not clear how these mutations, especially nonactive site mutations N88D and L90M, affect the affinity of NFV or why they cause the resistance to NFV. In this study, we executed molecular dynamics simulations of the NFV-bound proteases in the wild-type and D30N, N88D, D30N/N88D, and L90M mutants. Our simulations clarified the conformational change at the active site of the protease and the change of the affinity with NFV for all of these mutations, even though the 88th and 90th residues are not located in the NFV-bound cavity and not able to directly interact with NFV. D30N mutation causes the disappearance of the hydrogen bond between the m-phenol group of NFV and the 30th residue. N88D mutation alters the active site conformation slightly and induces a favorable hydrophobic contact. L90M mutation dramatically changes the conformation at the flap region and leads to an unfavorable distortion of the binding pocket of the protease, although 90M is largely far apart from the flap region. Furthermore, the changes of binding energies of the mutants from the wild-type protease are shown to be correlated with the mutant resistivity previously reported by the phenotypic experiments." @default.
• W2078814894 created "2016-06-24" @default.
• W2078814894 creator A5024525915 @default.
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• W2078814894 date "2004-12-09" @default.
• W2078814894 modified "2023-10-18" @default.
• W2078814894 title "Resistant Mechanism against Nelfinavir of Human Immunodeficiency Virus Type 1 Proteases" @default.
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• W2078814894 doi "https://doi.org/10.1021/jp046860+" @default.
• W2078814894 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16851048" @default.
• W2078814894 hasPublicationYear "2004" @default.
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