Evidence map›Paper›PMID 20510929›Full record

ArticleCell2010

Peptidoglycan crosslinking relaxation promotes Helicobacter pylori's helical shape and stomach colonization.

Laura K Sycuro, Zachary Pincus, Kimberley D Gutierrez, Jacob Biboy, Chelsea A Stern, Waldemar Vollmer, Nina R Salama

Open access · bronzeAbstract read
In one paragraph

Article in Cell, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 170 papers.

0numbers the graph read from it
0cells of the map it votes in
170citing papers in PubMed
18.1field-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

170 citing papers in PubMed, 277 citations in OpenAlex.

  1. Article
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  6. CoccoidVirulence · 2025
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  12. The interplay betweenInfection and immunity · 2025
    Article
  13. Molecules (Basel, Switzerland) · 2025
    Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Cells · 2024
    Article
  20. Article

110 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

7 authors at 3 institutions in 2 countries.

Laura K SycuroMolecular and Cellular Biology Graduate Program, University of Washington, Seattle, WA 98195, USA.
Zachary Pincus
Kimberley D Gutierrez
Jacob Biboy
Chelsea A Stern
Waldemar Vollmer
Nina R Salama
University of Washington · USNewcastle University · GBYale University · US

Funding

GENETIC REQUIREMENTS OF HELICOBACTER PYLORI INFECTIONR01AI054423 · NIAID · FRED HUTCHINSON CANCER RESEARCH CENTER · PI Nina Salama · 2004 to 2026
$9.5M
THE ROLE OF CELL SHAPE AND CELL WALL IN HELICOBACTER PYLORI PATHOGENESISR21AI082026 · NIAID · FRED HUTCHINSON CANCER RESEARCH CENTER · PI SALAMA, NINA · 2009 to 2010
$468k
Biotechnology and Biological Sciences Research Council BB/F001231/1NIAID NIH HHS AI054423NIAID NIH HHS AI082026NIAID NIH HHS R01 AI054423NIAID NIH HHS R21 AI082026
6 · The paper itself

Abstract

The mechanisms by which bacterial cells generate helical cell shape and its functional role are poorly understood. Helical shape of the human pathogen Helicobacter pylori may facilitate penetration of the thick gastric mucus where it replicates. We identified four genes required for helical shape: three LytM peptidoglycan endopeptidase homologs (csd1-3) and a ccmA homolog. Surrounding the cytoplasmic membrane of most bacteria, the peptidoglycan (murein) sacculus is a meshwork of glycan strands joined by peptide crosslinks. Intact cells and isolated sacculi from mutants lacking any single csd gene or ccmA formed curved rods and showed increased peptidoglycan crosslinking. Quantitative morphological analyses of multiple-gene deletion mutants revealed each protein uniquely contributes to a shape-generating pathway. This pathway is required for robust colonization of the stomach in spite of normal directional motility. Our findings suggest that the coordinated action of multiple proteins relaxes peptidoglycan crosslinking, enabling helical cell curvature and twist.

Indexed as

AnimalsBacterial Outer Membrane ProteinsEndopeptidasesFemaleHelicobacter InfectionsHelicobacter pyloriMetalloexopeptidasesMiceMice, Inbred C57BLMice, KnockoutPeptidoglycanSpecific Pathogen-Free OrganismsStomachBacterial Outer Membrane ProteinsCcmA protein, bacteriaEndopeptidasesMetalloexopeptidasesPeptidoglycanpeptidoglycan endopeptidase

Identifiers

PMID20510929
PMCPMC2920535
OpenAlexW2073924276

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.