The shape of Escherichia coli is approximately that of a cylinder with hemispherical caps. Since its size is not much larger than optical resolution, it has been difficult to quantify deviations from this approximation. We show that one can bypass this limitation and obtain the cell shape with subpixel accuracy. The resulting contours are shown to deviate from the hemisphere-cylinder-hemisphere shape. In particular, the cell is weakly asymmetric. Its two caps are different from each other and the sides are slightly curved. Most cells have convex sides. We discuss our results in light of several mechanisms that are involved in determining the shape of cells.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevE.77.061902 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Emergence and polyclonal dissemination of NDM-5/OXA-181 carbapenemase-producing Escherichia coli in the French Indian Ocean territories.
Ann Clin Microbiol Antimicrob
January 2025
Laboratoire de Bactériologie, CHU Félix Guyon, Allée des Topazes, 97400, Saint-Denis, La Réunion, France.
Aim: Located in the Southwest Indian Ocean area (SIOA), the two French overseas territories (FOTs) of Reunion and Mayotte islands are heavily impacted by antimicrobial resistance. The aim of this study was to investigate all cases of NDM-5 and OXA-181 carbapenemase-producing Escherichia coli (CPEc) in these two FOTs between 2015 and 2020, to better understand the regional spread of these last-line treatment resistant bacteria.
Methods: All E.
Prevalence of common diarrheagenic enterobacteriaceae in Iran (2000-2023): a systematic review and meta-analysis.
BMC Gastroenterol
January 2025
Department of Biostatistics, Payame Noor University, Karaj, Iran.
Objective: Bacterial gastroenteritis is a significant public health concern, capable of causing severe infections. Among the various pathogens involved, those belonging to the Enterobacteriaceae family are the most frequently isolated and associated with gastrointestinal disorders. This study aimed to investigate the prevalence of common diarrheagenic Enterobacteriaceae in Iran over the past two decades, from 2000 to 2023.
View Article and Find Full Text PDFTracking transmission through transposable elements in uropathogenic and commensal .
Future Microbiol
January 2025
Universidad San Francisco de Quito, Colegio de Ciencias Biológicas Ambientales, Instituto de Microbiología, Quito, Ecuador.
Aim: To investigate the nucleotide sequences associated with transposable elements carrying bla allelic variants as potential markers for the transmission of antimicrobial resistance genes between domestic animals, humans and the environment.
Materials & Methods: We conducted whole-genome sequencing and analyzed the nucleotide sequences of most abundant bla allelic variants (bla, bla, and bla) in commensal Escherichia coli ( = 20) from household members in Quito and uropathogenic E. coli (UPEC) ( = 149) isolated from nine clinics in Quito, Ecuador.
In-vitro susceptibility of cefiderocol and other comparators in carbapenem-resistant gram-negative bacilli: A study from India.
Indian J Med Microbiol
January 2025
Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India.
Introduction: Cefiderocol is a parenteral catechol-type siderophore cephalosporin, which has been approved for the treatment of gram-negative bacterial infections. Its activity among the carbapenem-resistant gram negative bacilli (CR-GNBs) in India is largely unknown.
Methodology: We tested in-vitro susceptibility of cefiderocol in 84 CR-GNB [ carbapenem-resistant Acinetobacter baumannii (CRAB), carbapenem-resistant Pseudomonas aeruginosa (CRPA) , carbapenem-resistant Escherichia coli (CREC) and carbapenem-resistant Klebsiella pneumoniae (CRKP)] by broth microdilution(BMD) and disc diffusion (DD) using Clinical and Laboratory Standards Institute (CLSI) and European Committee on Antimicrobial Susceptibility Testing (EUCAST) breakpoints and concordance of DD was compared with BMD.
Zn-doped CaP coating equips Ti implants with corrosion resistance, biomineralization, antibacterial and immunotolerant activities.
J Adv Res
January 2025
National Institute of Research and Development for Optoelectronics - INOE 2000, 409 Atomistilor St. 077125 Magurele, Romania. Electronic address:
Introduction: Chronic inflammation leading to implant failure present major challenges in orthopedics, dentistry, and reconstructive surgery. Titanium alloys, while widely used, often provoke inflammatory complications. Zinc-doped calcium phosphate (CaP) coatings offer potential to enhance implant integration by improving corrosion resistance, bioactivity, and immunocompatibility.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!