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Int J Antimicrob Agents
January 2021
Centre of Biotechnology and Microbiology, University of Peshawar, Pakistan. Electronic address:
Colicinogenic Escherichia coli in the human or animal gut prevent pathogen accumulation, thereby protecting against severe gut infections. This ability of commensal human and animal E. coli to restrain Gram-negative pathogens was evaluated invitro.
View Article and Find Full Text PDFFEMS Microbiol Lett
March 2002
Department of Microbiology and Molecular Genetics, University of Texas-Houston Medical School, Houston, TX, USA
Plasmid DNA of six Escherichia fergusonii colicinogenic strains (three producers of colicin E1, two of Ib and one of Ia) was isolated and the colicin-encoding regions of the corresponding Col plasmids were sequenced. Two new variants of colicin E1, one of colicin Ib, and one of colicin Ia were identified as well as new variants of the colicin E1 and colicin Ib immunity proteins and the colicin E1 lysis polypeptide. The recombinant Escherichia coli producer harboring pColE1 from E.
View Article and Find Full Text PDFFolia Microbiol (Praha)
March 1999
Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
Colicins are toxic exoproteins produced by bacteria of colicinogenic strains of Escherichia coli and some related species of Enterobacteriaceae, during the growth of their cultures. They inhibit sensitive bacteria of the same family. About 35% E.
View Article and Find Full Text PDFJ Food Prot
November 1998
Department of Food Science, Pennsylvania State University, University Park 16802, USA.
Twenty-seven diarrheagenic Escherichia coli (DEC) strains from five closely related, genetically distinct clones (DEC 3, 4, 8, 9, and 10), representing serotypes commonly associated with Shiga-like toxin production, i.e., O15:H-, O26:(H11, H-), O111:(H8, H11, H-), and O157:H7, were evaluated for colicinogeny on Luria agar or Luria agar containing 0.
View Article and Find Full Text PDFJ Clin Microbiol
November 1997
Departamento de Microbiología y Parasitología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, Spain.
Since the mechanism of virulence of Escherichia coli strains pathogenic to birds is not fully understood, the prevalence of toxic factors produced by E. coli strains pathogenic to other animals was investigated. A total of 625 E.
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