Evidence map›Paper›PMID 21885291›Full record

ArticleStructure (London, England : 1993)2011

Structure of the adenosine A(2A) receptor in complex with ZM241385 and the xanthines XAC and caffeine.

Andrew S Doré, Nathan Robertson, James C Errey, Irene Ng, Kaspar Hollenstein, Ben Tehan, Edward Hurrell, Kirstie Bennett, Miles Congreve, Francesca Magnani and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in Structure (London, England : 1993), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 242 papers.

0numbers the graph read from it
0cells of the map it votes in
242citing papers in PubMed
21.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

242 citing papers in PubMed, 548 citations in OpenAlex.

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  16. Identification of nanomolar adenosine ANature communications · 2025
    Article
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182 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 2 institutions in 1 country.

Andrew S DoréHeptares Therapeutics Ltd, BioPark, Welwyn Garden City, Herts, AL7 3AX, UK.
Nathan Robertson
James C Errey
Irene Ng
Kaspar Hollenstein
Ben Tehan
Edward Hurrell
Kirstie Bennett
Miles Congreve
Francesca Magnani
Christopher G Tate
Malcolm Weir
Fiona H Marshall
Heptares Therapeutics (United Kingdom) · GBMRC Laboratory of Molecular Biology · GB

Funding

Medical Research Council MC_U105197215
6 · The paper itself

Abstract

Methylxanthines, including caffeine and theophylline, are among the most widely consumed stimulant drugs in the world. These effects are mediated primarily via blockade of adenosine receptors. Xanthine analogs with improved properties have been developed as potential treatments for diseases such as Parkinson's disease. Here we report the structures of a thermostabilized adenosine A(2A) receptor in complex with the xanthines xanthine amine congener and caffeine, as well as the A(2A) selective inverse agonist ZM241385. The receptor is crystallized in the inactive state conformation as defined by the presence of a salt bridge known as the ionic lock. The complete third intracellular loop, responsible for G protein coupling, is visible consisting of extended helices 5 and 6. The structures provide new insight into the features that define the ligand binding pocket of the adenosine receptor for ligands of diverse chemotypes as well as the cytoplasmic regions that interact with signal transduction proteins.

Indexed as

Adenosine A2 Receptor AgonistsAmino Acid MotifsAmino Acid SequenceAmino Acid SubstitutionBinding SitesCaffeineCrystallography, X-RayHEK293 CellsHumansHydrogen BondingModels, MolecularMolecular Sequence DataMutagenesis, Site-DirectedProtein BindingProtein StabilityProtein Structure, Tertiary8-(4-((2-aminoethyl)aminocarbonylmethyloxy)phenyl)-1,3-dipropylxanthineAdenosine A2 Receptor AgonistsCaffeineReceptor, Adenosine A2ATriazinesTriazolesXanthinesZM 241385

Identifiers

PMID21885291
PMCPMC3732996
OpenAlexW2142322475

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.