Evidence map›Paper›PMID 24389923›Full record

ArticleNature communications2014

Structure-based mechanism for Na(+)/melibiose symport by MelB.

Abdul S Ethayathulla, Mohammad S Yousef, Anowarul Amin, Gérard Leblanc, H Ronald Kaback, Lan Guan

Open access · hybridAbstract read
In one paragraph

Article in Nature communications, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed
13.3field-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

100 citing papers in PubMed, 149 citations in OpenAlex.

  1. Structure and allostery in major facilitator superfamily symport mechanisms.Acta crystallographica. Section D, Structural biology · 2026
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  4. Allosteric effects of the coupling cation in melibiose transporter MelB.bioRxiv : the preprint server for biology · 2025
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  5. Review
  6. Proteomic Analysis ofFoods (Basel, Switzerland) · 2025
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  12. Mobile barrier mechanisms for NabioRxiv : the preprint server for biology · 2023
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  15. Review
  16. Mfsd2a utilizes a flippase mechanism to mediate omega-3 fatty acid lysolipid transport.Proceedings of the National Academy of Sciences of the United States of America · 2023
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  19. Structure and function of HNature communications · 2022
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  20. Article

40 more citing papers are in PubMed but not listed here.

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

6 authors at 3 institutions in 1 country.

Abdul S EthayathullaDepartment of Cell Physiology and Molecular Biophysics, Center for Membrane Protein Research, Texas Tech University Health Sciences Center, Lubbock, Texas 79430, USA.
Mohammad S YousefDepartment of Cell Physiology and Molecular Biophysics, Center for Membrane Protein Research, Texas Tech University Health Sciences Center, Lubbock, Texas 79430, USA
Anowarul AminDepartment of Cell Physiology and Molecular Biophysics, Center for Membrane Protein Research, Texas Tech University Health Sciences Center, Lubbock, Texas 79430, USA.
Gérard LeblancDepartment of Physiology, University of California, Los Angeles, California 90095, USA.
H Ronald KabackDepartment of Physiology, University of California, Los Angeles, California 90095, USA.
Lan GuanDepartment of Cell Physiology and Molecular Biophysics, Center for Membrane Protein Research, Texas Tech University Health Sciences Center, Lubbock, Texas 79430, USA.
Texas Tech University · USTexas Tech University Health Sciences Center · USUniversity of California, Los Angeles · US

Funding

NEW APPROACHES TO MEMBRANE PROTEIN STRUCTURESR01DK051131 · NIDDK · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KABACK, HOWARD RONALD · 1996 to 2014
$5.2M
Structural Basis for Mechanism of Secondary TransportersR01DK069463 · NIDDK · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI KABACK, HOWARD RONALD · 2005 to 2013
$3.7M
Novel capture reagents for membrane protein structure determinationR01GM095538 · NIGMS · TEXAS TECH UNIVERSITY HEALTH SCIS CENTER · PI GUAN, LAN · 2010 to 2013
$1.2M
Crystallization of eukaryotic facilitated glucose transportersR21HL087895 · NHLBI · TEXAS TECH UNIVERSITY HEALTH SCIS CENTER · PI GUAN, LAN · 2008 to 2009
$612k
NHLBI NIH HHS R21 HL087895NHLBI NIH HHS R21HL087895NIDDK NIH HHS R01 DK051131NIDDK NIH HHS R01DK051131NIDDK NIH HHS R01 DK069463NIDDK NIH HHS R01DK069463NIGMS NIH HHS R01 GM095538NIGMS NIH HHS R01GM095538
6 · The paper itself

Abstract

The bacterial melibiose permease (MelB) belongs to the glycoside-pentoside-hexuronide:cation symporter family, a part of the major facilitator superfamily (MFS). Structural information regarding glycoside-pentoside-hexuronide:cation symporter family transporters and other Na(+)-coupled permeases within MFS has been lacking, although a wealth of biochemical and biophysical data are available. Here we present the three-dimensional crystal structures of Salmonella typhimurium MelBSt in two conformations, representing an outward partially occluded and an outward inactive state of MelBSt. MelB adopts a typical MFS fold and contains a previously unidentified cation-binding motif. Three conserved acidic residues form a pyramidal-shaped cation-binding site for Na(+), Li(+) or H(+), which is in close proximity to the sugar-binding site. Both cosubstrate-binding sites are mainly contributed by the residues from the amino-terminal domain. These two structures and the functional data presented here provide mechanistic insights into Na(+)/melibiose symport. We also postulate a structural foundation for the conformational cycling necessary for transport catalysed by MFS permeases in general.

Indexed as

ProtonsBacterial ProteinsBinding SitesCationsCrystallography, X-RayLithiumMelibioseModels, MolecularProtein Structure, TertiarySalmonella typhimuriumSodiumSymportersBacterial ProteinsCationsLithiumMelibiosemelibiose permeaseProtonsSodiumSymporters

Identifiers

PMID24389923
PMCPMC4026327
OpenAlexW2097877929

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.