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E. coli is a gram-negative, facultative anaerobe, nonsporulating coliform bacterium. [18] Cells are typically rod-shaped, and are about 2.0 μm long and 0.25–1.0 μm in diameter, with a cell volume of 0.6–0.7 μm 3. [19] [20] [21] E. coli stains gram-negative because its cell wall is composed of a thin peptidoglycan layer and an outer membrane.
Enterohemorrhagic E. coli (EHEC) Enteroaggregative E. coli (EAEC) Uropathogenic E. coli (UPEC) Verotoxin-producing E. coli; E. coli O157:H7 is an enterohemorrhagic strain also 2006 North American E. coli outbreak; E. coli O104:H4, also 2011 E. coli O104:H4 outbreak; Escherichia coli O121; Escherichia coli O104:H21; Escherichia coli K1, meningitis
E. coli colonies containing the fluorescent pGLO plasmid. Escherichia coli (/ ˌ ɛ ʃ ɪ ˈ r ɪ k i ə ˈ k oʊ l aɪ /; commonly abbreviated E. coli) is a Gram-negative gammaproteobacterium commonly found in the lower intestine of warm-blooded organisms (endotherms). The descendants of two isolates, K-12 and B strain, are used routinely in ...
Enterotoxigenic Escherichia coli (ETEC) is a type of Escherichia coli and one of the leading bacterial causes of diarrhea in the developing world, [1] as well as the most common cause of travelers' diarrhea. [2] Insufficient data exists, but conservative estimates suggest that each year, about 157,000 deaths occur, mostly in children, from ETEC.
E. coli bacteria often carry multiple drug resistance plasmids, and under stress, readily transfer those plasmids to other species. Mixing of species in the intestines allows E. coli to accept and transfer plasmids from and to other bacteria. Thus, E. coli and the other enterobacteria are important reservoirs of transferable antibiotic ...
Escherichia (/ ˌ ɛ ʃ ə ˈ r ɪ k i ə / ESH-ə-RIK-ee-ə) is a genus of Gram-negative, non-spore-forming, facultatively anaerobic, rod-shaped bacteria from the family Enterobacteriaceae. [3] In those species which are inhabitants of the gastrointestinal tracts of warm-blooded animals, Escherichia species provide a portion of the microbially ...
The LacUV5 promoter is derived from the E. coli wildtype lac promoter but exhibits an increased transcription strength due to two mutations that facilitate its interaction with a native E. coli RNAP σ-factor. [7] In E. coli BL21(DE3) the expression of the T7-RNAP is suppressed by the constitutively expressed LacI repressor.
Enteroinvasive E. coli (EIEC) invades (passes into) the intestinal wall to produce severe diarrhea. Enterohemorrhagic E. coli (EHEC): A type of EHEC, E. coli O157:H7, can cause bloody diarrhea and hemolytic uremic syndrome (anemia and kidney failure). Enterotoxigenic E. coli (ETEC) produces a toxin that acts on the intestinal lining, and is the ...