ArticleMicrobial drug resistance (Larchmont, N.Y.)2016
Role of the N-Acetylmuramoyl-l-Alanyl Amidase, AmiA, of Helicobacter pylori in Peptidoglycan Metabolism, Daughter Cell Separation, and Virulence.
Article in Microbial drug resistance (Larchmont, N.Y.), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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.
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.
Who cites it
15 citing papers in PubMed.
- Pathogenicity ofWorld journal of clinical oncology · 2025Review
- Modelling host-pathogen interactions:Microbiology (Reading, England) · 2025Article
- Novel M23 peptidases Pgp4, Pgp5, and Pgp6 contribute to helical cell shape inFrontiers in microbiology · 2025Article
- Molecular Mechanisms of Biofilm Formation inAntibiotics (Basel, Switzerland) · 2024Review
- Pathohistological Changes in the Gastric Mucosa in Correlation with the Immunohistochemically Detected Spiral and Coccoid Forms ofMicroorganisms · 2024Article
- Myricetin as an Antivirulence Compound Interfering with a Morphological Transformation into Coccoid Forms and Potentiating Activity of Antibiotics againstInternational journal of molecular sciences · 2021Article
- Diversification of LytM Protein Functions in Polar Elongation and Cell Division ofFrontiers in microbiology · 2021Article
- Functional Characterization of theCells · 2020Article
- Lytic transglycosylases RlpA and MltC assist in Vibrio cholerae daughter cell separation.Molecular microbiology · 2019Article
- A Genome-Wide Helicobacter pylori Morphology Screen Uncovers a Membrane-Spanning Helical Cell Shape Complex.Journal of bacteriology · 2019Article
- The Campylobacter jejuni helical to coccoid transition involves changes to peptidoglycan and the ability to elicit an immune response.Molecular microbiology · 2019Article
- Potential Role of Biofilm Formation in the Development of Digestive Tract Cancer With Special Reference toFrontiers in microbiology · 2019Article
- Interplay between Peptidoglycan Biology and Virulence in Gram-Negative Pathogens.Microbiology and molecular biology reviews : MMBR · 2018Review
- Morphology ofPrzeglad gastroenterologiczny · 2018Review
- Determinants of Bacterial Morphology: From Fundamentals to Possibilities for Antimicrobial Targeting.Frontiers in microbiology · 2017Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The human gastric pathogen, Helicobacter pylori, is becoming increasingly resistant to most available antibiotics. Peptidoglycan (PG) metabolism is essential to eubacteria, hence, an excellent target for the development of new therapeutic strategies. However, our knowledge on PG metabolism in H. pylori remains poor. We have further characterized an isogenic mutant of the amiA gene encoding a N-acetylmuramoyl-l-alanyl amidase. The amiA mutant displayed long chains of unseparated cells, an impaired motility despite the presence of intact flagella and a tolerance to amoxicillin. Interestingly, the amiA mutant was impaired in colonizing the mouse stomach suggesting that AmiA is a valid target in H. pylori for the development of new antibiotics. Using reverse phase high-pressure liquid chromatography, we analyzed the PG muropeptide composition and glycan chain length distribution of strain 26695 and its amiA mutant. The analysis showed that H. pylori lacked muropeptides with a degree of cross-linking higher than dimeric muropeptides. The amiA mutant was also characterized by a decrease of muropeptides carrying 1,6-anhydro-N-acetylmuramic acid residues, which represent the ends of the glycan chains. This correlated with an increase of very long glycan strands in the amiA mutant. It is suggested that these longer glycan strands are trademarks of the division site. Taken together, we show that the low redundancy on genes involved in PG maturation supports H. pylori as an actractive alternative model to study PG metabolism and cell shape regulation.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.