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• W2035369931 endingPage "392" @default.
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• W2035369931 abstract "Protease-activated receptor 1 (PAR1) is the prototypical member of a family of G-protein-coupled receptors that mediate cellular responses to thrombin and related proteases. Thrombin irreversibly activates PAR1 by cleaving the amino-terminal exodomain of the receptor, which exposes a tethered peptide ligand that binds the heptahelical bundle of the receptor to affect G-protein activation. Here we report the 2.2-Å-resolution crystal structure of human PAR1 bound to vorapaxar, a PAR1 antagonist. The structure reveals an unusual mode of drug binding that explains how a small molecule binds virtually irreversibly to inhibit receptor activation by the tethered ligand of PAR1. In contrast to deep, solvent-exposed binding pockets observed in other peptide-activated G-protein-coupled receptors, the vorapaxar-binding pocket is superficial but has little surface exposed to the aqueous solvent. Protease-activated receptors are important targets for drug development. The structure reported here will aid the development of improved PAR1 antagonists and the discovery of antagonists to other members of this receptor family. The X-ray crystal structure of the human G-protein-coupled receptor protease-activated receptor 1 (PAR1) bound to the antagonist vorapaxar is solved, revealing an unusual method of drug binding that should facilitate the development of improved PAR1-selective antagonists. The X-ray crystal structure of the human protease-activated receptor 1 (PAR1) bound to vorapaxar, a PAR1 antagonist, has been determined at 2.2 Å resolution. PAR1, also known as the thrombin receptor, is a G protein-coupled receptor that mediates cellular responses to the coagulation protease thrombin and related proteases. Vorapaxar was recently shown to prevent myocardial infarction in at-risk patients, and knowledge of the PAR structure will be relevant to the design of PAR1 antagonists with better drug properties." @default.
• W2035369931 created "2016-06-24" @default.
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• W2035369931 date "2012-12-01" @default.
• W2035369931 modified "2023-10-16" @default.
• W2035369931 title "High-resolution crystal structure of human protease-activated receptor 1" @default.
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• W2035369931 doi "https://doi.org/10.1038/nature11701" @default.
• W2035369931 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3531875" @default.
• W2035369931 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23222541" @default.
• W2035369931 hasPublicationYear "2012" @default.
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