Studying the dynamics of flagella in multicellular communities of Escherichia coli by using biarsenical dyes.

Using L-arabinose for Production of Human Growth Hormone in Escherichia coli, Studying the Processing of gIII::hGH Precursor

بررسی فراوانی اشریشیاکلی انتروپاتوژنیک از نمونه های اسهال کودکان زیر 5 سال ناشی از طغیان های غذایی کشوری با روش مولکولی PCR

Background and Aim: Enteropathogenic Escherichia coli (EPEC) pathotypes belong to Enterobacteriaceae family that is known as the cause of gastroenteritis and diarrhea in under-5-year-old children. These bacteria have high prevalence in developed and developing countries that may cause severe illness or even death. The aim of this study was to examine EPEC prevalence in diarrheal samples of chil...

Removal of nickel and total chromium using Escherichia coli biofilm supported on clinoptilolite

-Biofilm is communities of microorganisms attached to the surface and is able to concentrate metal species within their cell structure. Therefore, the aim of this study was to produce Escherichia coli biofilm on zeolite (clinoptilolite) and evaluate its ability for nickel (Ni) and chromium (Cr) adsorption from aqueous solutions. A laboratory-scale batch model was used for biodsorption assay. Th...

Molecular Study of Phase Variation of Type 1 Fimbriae in Uropathogenic Escherichia coli O44 Serotypes during Touching with Solid Surfaces

Background & Aims: Type 1 fimbriae is the most common adhesion factor in urine tract infection. In this Study, presence of virulence genes in isolated strains of uropathogenic E.Coli, O serotyping and molecular detection of phase variation of type 1 fimbriae were assessed during solid surfaces exposure. Methods: Isolated E.coli from urine samples of patients were serotyped by using serologic me...

Microanatomy at Cellular Resolution and Spatial Order of Physiological Differentiation in a Bacterial Biofilm

UNLABELLED Bacterial biofilms are highly structured multicellular communities whose formation involves flagella and an extracellular matrix of adhesins, amyloid fibers, and exopolysaccharides. Flagella are produced by still-dividing rod-shaped Escherichia coli cells during postexponential growth when nutrients become suboptimal. Upon entry into stationary phase, however, cells stop producing fl...