Evidence map›Paper›PMID 28329765›Full record

ArticleNature2017

Structural insights into adiponectin receptors suggest ceramidase activity.

Ieva Vasiliauskaité-Brooks, Remy Sounier, Pascal Rochaix, Gaëtan Bellot, Mathieu Fortier, François Hoh, Luigi De Colibus, Chérine Bechara, Essa M Saied, Christoph Arenz and 2 more

Open access · greenAbstract readComparative Study
In one paragraph

Article in Nature, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 136 papers.

0numbers the graph read from it
0cells of the map it votes in
136citing papers in PubMed
13.8field-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

136 citing papers in PubMed, 210 citations in OpenAlex.

  1. Trial
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  3. Sphingomyelin as a key negative mediator in atrial fibrillation via lipid profiling analysis and functional identification.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2026
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  19. The Role ofInternational journal of general medicine · 2025
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76 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 6 institutions in 4 countries.

Ieva Vasiliauskaité-BrooksInstitut de Génomique Fonctionnelle, CNRS UMR-5203 INSERM U1191, University of Montpellier, 34094 Montpellier, France.
Remy SounierInstitut de Génomique Fonctionnelle, CNRS UMR-5203 INSERM U1191, University of Montpellier, 34094 Montpellier, France.
Pascal RochaixInstitut de Génomique Fonctionnelle, CNRS UMR-5203 INSERM U1191, University of Montpellier, 34094 Montpellier, France.
Gaëtan BellotInstitut de Génomique Fonctionnelle, CNRS UMR-5203 INSERM U1191, University of Montpellier, 34094 Montpellier, France.
Mathieu FortierInstitut de Génomique Fonctionnelle, CNRS UMR-5203 INSERM U1191, University of Montpellier, 34094 Montpellier, France.
François HohCentre de Biochimie Structurale, CNRS UMR 5048-INSERM 1054 University of Montpellier, 29 rue de Navacelles, 34090 Montpellier Cedex, France.
Luigi De ColibusDivision of Structural Biology, University of Oxford, Oxford, UK.
Chérine BecharaDynamique des Interactions Membranaires Normales et Pathologiques, CNRS UMR5235, University of Montpellier, 34095 Montpellier, France.
Essa M SaiedInstitute for chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany.
Christoph ArenzInstitute for chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany.
Cédric LeyratInstitut de Génomique Fonctionnelle, CNRS UMR-5203 INSERM U1191, University of Montpellier, 34094 Montpellier, France.
Sébastien GranierInstitut de Génomique Fonctionnelle, CNRS UMR-5203 INSERM U1191, University of Montpellier, 34094 Montpellier, France.
Centre National de la Recherche Scientifique · FRHumboldt-Universität zu Berlin · DEInstitut de Génomique Fonctionnelle · FRUniversité de Montpellier · FRInserm · FRUniversity of Oxford · GB

Funding

European Research Council 647687
6 · The paper itself

Abstract

Adiponectin receptors (ADIPORs) are integral membrane proteins that control glucose and lipid metabolism by mediating, at least in part, a cellular ceramidase activity that catalyses the hydrolysis of ceramide to produce sphingosine and a free fatty acid (FFA). The crystal structures of the two receptor subtypes, ADIPOR1 and ADIPOR2, show a similar overall seven-transmembrane-domain architecture with large unoccupied cavities and a zinc binding site within the seven transmembrane domain. However, the molecular mechanisms by which ADIPORs function are not known. Here we describe the crystal structure of ADIPOR2 bound to a FFA molecule and show that ADIPOR2 possesses intrinsic basal ceramidase activity that is enhanced by adiponectin. We also identify a ceramide binding pose and propose a possible mechanism for the hydrolytic activity of ADIPOR2 using computational approaches. In molecular dynamics simulations, the side chains of residues coordinating the zinc rearrange quickly to promote the nucleophilic attack of a zinc-bound hydroxide ion onto the ceramide amide carbonyl. Furthermore, we present a revised ADIPOR1 crystal structure exhibiting a seven-transmembrane-domain architecture that is clearly distinct from that of ADIPOR2. In this structure, no FFA is observed and the ceramide binding pocket and putative zinc catalytic site are exposed to the inner membrane leaflet. ADIPOR1 also possesses intrinsic ceramidase activity, so we suspect that the two distinct structures may represent key steps in the enzymatic activity of ADIPORs. The ceramidase activity is low, however, and further studies will be required to characterize fully the enzymatic parameters and substrate specificity of ADIPORs. These insights into ADIPOR function will enable the structure-based design of potent modulators of these clinically relevant enzymes.

Indexed as

AdiponectinBinding SitesCatalytic DomainCeramidesCrystallography, X-RayFatty Acids, NonesterifiedHumansHydrolysisHydroxidesModels, MolecularMolecular Dynamics SimulationProtein DomainsReceptors, AdiponectinZincAdiponectinADIPOR1 protein, humanADIPOR2 protein, humanCeramidesFatty Acids, Nonesterifiedhydroxide ionHydroxidesReceptors, AdiponectinZinc

Identifiers

PMID28329765
PMCPMC5595237
OpenAlexW2601988974

What OpenQuestion holds

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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.