Evidence map›Paper›PMID 34516884›Full record

ArticleScience advances2021

Molecular mechanism of SbmA, a promiscuous transporter exploited by antimicrobial peptides.

Dmitry Ghilarov, Satomi Inaba-Inoue, Piotr Stepien, Feng Qu, Elizabeth Michalczyk, Zuzanna Pakosz, Norimichi Nomura, Satoshi Ogasawara, Graham Charles Walker, Sylvie Rebuffat and 3 more

Abstract read
In one paragraph

Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
–field-weighted citation impact
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

31 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. BacA(SbmA) importer of legume symbiotic NCR peptides: Protein architecture, function, and evolutionary implications.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Proline-Rich Antimicrobial Peptides from Invertebrates.Molecules (Basel, Switzerland) · 2024
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

13 authors.

Dmitry GhilarovMalopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland.ORCID 0000-0001-9325-3207
Satomi Inaba-InoueDepartment of Life Sciences, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, UK.ORCID 0000-0002-6939-1324
Piotr StepienMalopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland.ORCID 0000-0002-4859-6443
Feng QuDepartment of Life Sciences, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, UK.ORCID 0000-0001-7168-9018
Elizabeth MichalczykMalopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland.ORCID 0000-0002-9276-7764
Zuzanna PakoszMalopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland.ORCID 0000-0002-2288-8616
Norimichi NomuraDepartment of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.
Satoshi OgasawaraDepartment of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.
Graham Charles WalkerDepartment of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Sylvie RebuffatMolecules of Communication and Adaptation of Microorganisms Laboratory (MCAM, UMR 7245 CNRS-MNHN), Muséum National d'Histoire Naturelle, Sorbonne Universités, Centre National de la Recherche Scientifique, CP 54, 57 rue Cuvier, Paris 75005, France.ORCID 0000-0002-5257-5039
So IwataDepartment of Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.ORCID 0000-0003-1735-2937
Jonathan Gardiner HeddleMalopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland.ORCID 0000-0003-0994-9928
Konstantinos BeisDepartment of Life Sciences, Imperial College London, Exhibition Road, South Kensington, London SW7 2AZ, UK.ORCID 0000-0001-5727-4721

Funding

MOLEULAR GENETICS OF RHIZOBIUM PLASMIDSR01GM031030 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI WALKER, GRAHAM C · 1985 to 2020
$8.6M
Biotechnology and Biological Sciences Research Council BB/H01778X/1NIGMS NIH HHS R01 GM031030
6 · The paper itself

Abstract

Antibiotic metabolites and antimicrobial peptides mediate competition between bacterial species. Many of them hijack inner and outer membrane proteins to enter cells. Sensitivity of enteric bacteria to multiple peptide antibiotics is controlled by the single inner membrane protein SbmA. To establish the molecular mechanism of peptide transport by SbmA and related BacA, we determined their cryo–electron microscopy structures at 3.2 and 6 Å local resolution, respectively. The structures show a previously unknown fold, defining a new class of secondary transporters named SbmA-like peptide transporters. The core domain includes conserved glutamates, which provide a pathway for proton translocation, powering transport. The structures show an outward-open conformation with a large cavity that can accommodate diverse substrates. We propose a molecular mechanism for antibacterial peptide uptake paving the way for creation of narrow-targeted therapeutics.

Identifiers

PMID34516884
PMCPMC8442886

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Registered trials

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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.