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• W2415658637 abstract "HIV-1 gp41 facilitates the viral fusion through a conformational switch involving the association of three C-terminal helices along the conserved hydrophobic grooves of three N-terminal helices coiled-coil. The control of these structural rearrangements is thought to be central to HIV-1 entry and, therefore, different strategies of intervention are being developed. Herewith, we describe a procedure to simulate the folding of an HIV-1 gp41 simplified model. This procedure is based on the construction of plausible conformational pathways, which describe protein transition between non-fusogenic and fusogenic conformations. The calculation of the paths started with 100 molecular dynamics simulations of the non-fusogenic conformation, which were found to converge to different intermediate states. Those presenting defined criteria were selected for separate targeted molecular dynamics simulations, subjected to a force constant imposing a movement towards the gp41 fusogenic conformation. Despite significant diversity, a preferred sequence of events emerged when the simulations were analyzed in terms of the formation, breakage and evolution of the contacts. We pointed out 29 residues as the most relevant for the movement of gp41; also, 2696 possible interactions were reduced to only 48 major interactions, which reveals the efficiency of the method. The analysis of the evolution of the main interactions lead to the detection of four main behaviors for those contacts: stable, increasing, decreasing and repulsive interactions. Altogether, these results suggest a specific small cavity of the HIV-1 gp41 hydrophobic groove as the preferred target to small molecules." @default.
• W2415658637 created "2016-06-24" @default.
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• W2415658637 date "2016-01-19" @default.
• W2415658637 modified "2023-10-01" @default.
• W2415658637 title "Striking HIV-1 Entry by Targeting HIV-1 gp41. But, Where Should We Target?" @default.
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• W2415658637 doi "https://doi.org/10.1371/journal.pone.0146743" @default.
• W2415658637 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4718650" @default.
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• W2415658637 hasPublicationYear "2016" @default.
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