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The Aminotriazole Antagonist Cmpd-1 Stabilises a Novel Inactive State of the Adenosine 2A Receptor

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)9399-9403
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number28
Early online date16 May 2019
DateAccepted/In press - 8 May 2019
DateE-pub ahead of print - 16 May 2019
DatePublished (current) - 8 Jul 2019


The widely expressed G-protein coupled receptors (GPCRs) are versatile signal transducer proteins that are attractive drug targets but structurally challenging to study. GPCRs undergo a number of conformational rearrangements when transitioning from the inactive to the active state but have so far been believed to adopt a fairly conserved inactive conformation. Using 19F NMR spectroscopy and advanced molecular dynamics simulations we describe a novel inactive state of the adenosine 2A receptor which is stabilised by the aminotriazole antagonist Cmpd-1. We demonstrate that the ligand stabilises a unique conformation of helix V and present data on the putative binding mode of the compound involving contacts to the transmembrane bundle as well as the extracellular loop 2.

    Structured keywords

  • BrisSynBio
  • Bristol BioDesign Institute

    Research areas

  • G-protein coupled receptor, NMR spectroscopy, molecular dynamics, conformational flexibility, inactive state, Synthetic biology



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