3TTP

Structure of multiresistant HIV-1 protease in complex with darunavir

3TTP の概要

• エントリーDOI: 10.2210/pdb3ttp/pdb
• 関連するPDBエントリー: 3ggt 3ggu 3qoz
• 分子名称: HIV-1 protease, (3R,3AS,6AR)-HEXAHYDROFURO[2,3-B]FURAN-3-YL(1S,2R)-3-[[(4-AMINOPHENYL)SULFONYL](ISOBUTYL)AMINO]-1-BENZYL-2-HYDROXYPROPYLCARBAMATE, CHLORIDE ION, ... (5 entities in total)
• 機能のキーワード: hydrolase, viral praticle, hydrolase-hydrolase inhibitor complex, hydrolase/hydrolase inhibitor
• 由来する生物種: Human immunodeficiency virus type 1 (HIV-1)
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 22342.01

構造登録者

Saskova, K.G.,Brynda, J.,Kozisek, M.,Konvalinka, J.,Rezacova, P. (登録日: 2011-09-15, 公開日: 2012-09-26, 最終更新日: 2023-11-29)

主引用文献

Kozisek, M.,Lepsik, M.,Grantz Saskova, K.,Brynda, J.,Konvalinka, J.,Rezacova, P.
Thermodynamic and structural analysis of HIV protease resistance to darunavir - analysis of heavily mutated patient-derived HIV-1 proteases.
Febs J., 281:1834-1847, 2014

PubMed Abstract: We report enzymologic, thermodynamic and structural analyses of a series of six clinically derived mutant HIV proteases (PR) resistant to darunavir. As many as 20 mutations in the resistant PRs decreased the binding affinity of darunavir by up to 13 000-fold, mostly because of a less favorable enthalpy of binding that was only partially compensated by the entropic contribution. X-ray structure analysis suggested that the drop in enthalpy of darunavir binding to resistant PR species was mostly the result of a decrease in the number of hydrogen bonds and a loosening of the fit between the inhibitor and the mutated enzymes. The favorable entropic contribution to darunavir binding to mutated PR variants correlated with a larger burial of the nonpolar solvent-accessible surface area upon inhibitor binding. We show that even very dramatic changes in the PR sequence leading to the loss of hydrogen bonds with the inhibitor could be partially compensated by the entropy contribution as a result of the burial of the larger nonpolar surface area of the mutated HIV PRs.

PubMed: 24785545
DOI: 10.1111/febs.12743

実験手法

X-RAY DIFFRACTION (2.23 Å)