Evidence map›Paper›PMID 25651061›Full record

ArticleStructure (London, England : 1993)2015

Gating topology of the proton-coupled oligopeptide symporters.

Philip W Fowler, Marcella Orwick-Rydmark, Sebastian Radestock, Nicolae Solcan, Patricia M Dijkman, Joseph A Lyons, Jane Kwok, Martin Caffrey, Anthony Watts, Lucy R Forrest and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Structure (London, England : 1993), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
23.6field-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

55 citing papers in PubMed, 129 citations in OpenAlex.

  1. Article
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  4. Identification of New Key Players for Ferrous Iron Export in the Asymmetric Inner Gate of Human Ferroportin 1.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
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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

11 authors at 3 institutions in 3 countries.

Philip W FowlerDepartment of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK. Electronic address: philip.fowler@bioch.ox.ac.uk.
Marcella Orwick-RydmarkDepartment of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
Sebastian RadestockMax Planck Institute of Biophysics, Max-von-Laue-Straße 3, Frankfurt am Main, Germany.
Nicolae SolcanDepartment of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
Patricia M DijkmanDepartment of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
Joseph A LyonsSchool of Biochemistry and Immunology, Trinity College Dublin, Dublin 2, Ireland.
Jane KwokDepartment of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
Martin CaffreySchool of Biochemistry and Immunology, Trinity College Dublin, Dublin 2, Ireland.
Anthony WattsDepartment of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.
Lucy R ForrestMax Planck Institute of Biophysics, Max-von-Laue-Straße 3, Frankfurt am Main, Germany.
Simon NewsteadDepartment of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK. Electronic address: simon.newstead@bioch.ox.ac.uk.
University of Oxford · GBMax Planck Institute of Biophysics · DETrinity College Dublin · IE

Funding

Yeast ExpressionP50GM073210 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI STROUD, ROBERT M · 2004 to 2013
$21.5M
Computational Studies of Membrane Transport ProteinsZIANS003139 · NINDS · NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE · PI FORREST, LUCY · 2014 to 2025
$13.7M
Center for the Rational Design of Membrane Protein CrystallographyU54GM094599 · NIGMS · ARIZONA STATE UNIVERSITY-TEMPE CAMPUS · PI FROMME, PETRA · 2010 to 2014
$6.8M
Medical Research Council G0900076Medical Research Council G0900076/1Medical Research Council G0900399NIGMS NIH HHS P50 GM073210NIGMS NIH HHS P50GM073210NIGMS NIH HHS U54 GM094599NIGMS NIH HHS U54GM094599Wellcome Trust 092970/Z/10/ZWellcome Trust 102890Wellcome Trust 102890/Z/13/Z
6 · The paper itself

Abstract

Proton-coupled oligopeptide transporters belong to the major facilitator superfamily (MFS) of membrane transporters. Recent crystal structures suggest the MFS fold facilitates transport through rearrangement of their two six-helix bundles around a central ligand binding site; how this is achieved, however, is poorly understood. Using modeling, molecular dynamics, crystallography, functional assays, and site-directed spin labeling combined with double electron-electron resonance (DEER) spectroscopy, we present a detailed study of the transport dynamics of two bacterial oligopeptide transporters, PepTSo and PepTSt. Our results identify several salt bridges that stabilize outward-facing conformations and we show that, for all the current structures of MFS transporters, the first two helices of each of the four inverted-topology repeat units form half of either the periplasmic or cytoplasmic gate and that these function cooperatively in a scissor-like motion to control access to the peptide binding site during transport.

Indexed as

Models, MolecularBacteriaBiological Transport, ActiveCrystallographyElectron Spin Resonance SpectroscopyMolecular Dynamics SimulationProtein ConformationSpectrum AnalysisSymportersSymporters

Identifiers

PMID25651061
PMCPMC4321885
OpenAlexW2047313444

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.