Evidence map›Paper›PMID 30146169›Full record

ArticleStructure (London, England : 1993)2018

Chemical Crosslinking Mass Spectrometry Reveals the Conformational Landscape of the Activation Helix of PPARγ; a Model for Ligand-Dependent Antagonism.

Jie Zheng, Cesar Corzo, Mi Ra Chang, Jinsai Shang, Vinh Q Lam, Richard Brust, Anne-Laure Blayo, John B Bruning, Theodore M Kamenecka, Douglas J Kojetin and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Structure (London, England : 1993), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.4field-weighted citation impact, top 18% 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

23 citing papers in PubMed, 37 citations in OpenAlex.

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  13. Fundamentals of HDX-MS.Essays in biochemistry · 2023
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 2 institutions in 2 countries.

Jie ZhengThe Scripps Research Institute, Department of Molecular Medicine, Jupiter, FL 33458, USA.
Cesar CorzoThe Scripps Research Institute, Department of Molecular Medicine, Jupiter, FL 33458, USA.
Mi Ra ChangThe Scripps Research Institute, Department of Molecular Medicine, Jupiter, FL 33458, USA.
Jinsai ShangDepartment of Integrative Structural and Computational Biology, The Scripps Research Institute, Jupiter, FL 33458, USA.
Vinh Q LamThe Scripps Research Institute, Department of Molecular Medicine, Jupiter, FL 33458, USA.
Richard BrustDepartment of Integrative Structural and Computational Biology, The Scripps Research Institute, Jupiter, FL 33458, USA.
Anne-Laure BlayoThe Scripps Research Institute, Department of Molecular Medicine, Jupiter, FL 33458, USA.
John B BruningThe University of Adelaide, Institute for Photonics & Advanced Sensing (IPAS), School of Biological Sciences, University of Adelaide, Adelaide, SA 5005, Australia.
Theodore M KameneckaThe Scripps Research Institute, Department of Molecular Medicine, Jupiter, FL 33458, USA.
Douglas J KojetinThe Scripps Research Institute, Department of Molecular Medicine, Jupiter, FL 33458, USA; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, Jupiter, FL 33458, USA.
Patrick R GriffinThe Scripps Research Institute, Department of Molecular Medicine, Jupiter, FL 33458, USA; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, Jupiter, FL 33458, USA. Electronic address: pgriffin@scripps.edu.
Scripps Research Institute · USUniversity of Adelaide · AU

Funding

Molecular Characterization of Novel Insulin SensitizersR01DK105825 · NIDDK · SCRIPPS FLORIDA · PI GRIFFIN, PATRICK ROBERT · 2015 to 2019
$2.9M
Structure and Function of Alternate-Site Binding of Anti-Diabetic PPARG LigandsR01DK101871 · NIDDK · SCRIPPS FLORIDA · PI KOJETIN, DOUGLAS · 2014 to 2018
$2.1M
NIDDK NIH HHS R01 DK101871NIDDK NIH HHS R01 DK105825
6 · The paper itself

Abstract

Peroxisome proliferator-activated receptors (PPARs) are pharmacological targets for the treatment of metabolic disorders. Previously, we demonstrated the anti-diabetic effects of SR1664, a PPARγ modulator lacking classical transcriptional agonism, despite its poor pharmacokinetic properties. Here, we report identification of the antagonist SR11023 as a potent insulin sensitizer with significant plasma exposure following oral administration. To determine the structural mechanism of ligand-dependent antagonism of PPARγ, we employed an integrated approach combining solution-phase biophysical techniques to monitor activation helix (helix 12) conformational dynamics. While informative on receptor dynamics, hydrogen/deuterium exchange mass spectrometry and nuclear magnetic resonance data provide limited information regarding the specific orientations of structural elements. In contrast, label-free quantitative crosslinking mass spectrometry revealed that binding of SR11023 to PPARγ enhances interaction with co-repressor motifs by pushing H12 away from the agonist active conformation toward the H2-H3 loop region (i.e., the omega loop), revealing the molecular mechanism for active antagonism of PPARγ.

Indexed as

3T3-L1 CellsAnimalsBinding SitesBiphenyl CompoundsCrystallography, X-RayDeuterium Exchange MeasurementDrug DesignHEK293 CellsHumansLigandsMagnetic Resonance SpectroscopyMass SpectrometryMiceModels, MolecularPPAR gammaProtein Structure, SecondaryBiphenyl CompoundsLigandsPPAR gammaactivation function 2AF-2antagonistcross-linking mass spectrometryHDX-MSHydrogen-deuterium exchangeNMRnuclear receptorsPPARγXL-MS

Identifiers

PMID30146169
PMCPMC6221991
OpenAlexW2888598198

What OpenQuestion holds

Textmetadata
LicenceTDM
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.