Evidence map›Paper›PMID 23741366›Full record

ArticlePloS one2013

Coarse-grained/molecular mechanics of the TAS2R38 bitter taste receptor: experimentally-validated detailed structural prediction of agonist binding.

Alessandro Marchiori, Luciana Capece, Alejandro Giorgetti, Paolo Gasparini, Maik Behrens, Paolo Carloni, Wolfgang Meyerhof

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
6.7field-weighted citation impact, top 3% 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

29 citing papers in PubMed, 76 citations in OpenAlex.

  1. Article
  2. Article
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  4. In Silico Molecular Study of Tryptophan Bitterness.Molecules (Basel, Switzerland) · 2020
    Article
  5. Review
  6. Evolution of the bitter taste receptor TAS2R38 in colobines.Primates; journal of primatology · 2020
    Article
  7. Article
  8. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 2 countries.

Alessandro MarchioriInternational School for Advanced Studies (SISSA-ISAS), Neuroscience Sector, Trieste, Italy.
Luciana Capece
Alejandro Giorgetti
Paolo Gasparini
Maik Behrens
Paolo Carloni
Wolfgang Meyerhof
German Institute of Human Nutrition · DEGerman Research School for Simulation Sciences · DEInternational Centre for Genetic Engineering and Biotechnology · ITIRCCS Materno Infantile Burlo Garofolo · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bitter molecules in humans are detected by ∼25 G protein-coupled receptors (GPCRs). The lack of atomic resolution structure for any of them is complicating an in depth understanding of the molecular mechanisms underlying bitter taste perception. Here, we investigate the molecular determinants of the interaction of the TAS2R38 bitter taste receptor with its agonists phenylthiocarbamide (PTC) and propylthiouracil (PROP). We use the recently developed hybrid Molecular Mechanics/Coarse Grained (MM/CG) method tailored specifically for GPCRs. The method, through an extensive exploration of the conformational space in the binding pocket, allows the identification of several residues important for agonist binding that would have been very difficult to capture from the standard bioinformatics/docking approach. Our calculations suggest that both agonists bind to Asn103, Phe197, Phe264 and Trp201, whilst they do not interact with the so-called extra cellular loop 2, involved in cis-retinal binding in the GPCR rhodopsin. These predictions are consistent with data sets based on more than 20 site-directed mutagenesis and functional calcium imaging experiments of TAS2R38. The method could be readily used for other GPCRs for which experimental information is currently lacking.

Indexed as

Computational BiologyMolecular Docking SimulationHEK293 CellsHumansMolecular Dynamics SimulationMutagenesis, Site-DirectedPhenylthioureaPropylthiouracilProtein Interaction Domains and MotifsProtein Structure, SecondaryReceptors, G-Protein-CoupledRecombinant ProteinsRhodopsinStructural Homology, ProteinTaste BudsTaste Receptors, Type 2PhenylthioureaPropylthiouracilReceptors, G-Protein-CoupledRecombinant ProteinsRhodopsinTaste Receptors, Type 2

Identifiers

PMID23741366
PMCPMC3669430
OpenAlexW2063829100

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.