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Escherichia coli BL21(DE3) is a commonly used protein production strain of the E. coli bacterium. This strain combines several features that allow for excessive expression of heterologous proteins . It is derived from the B lineage of E. coli .
Escherichia coli BL21(DE3) Pathogenic: [1] Enterotoxigenic E. coli (ETEC) Enteropathogenic E. coli (EPEC) Enteroinvasive E. coli (EIEC) 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 strain BL21 and BL21(DE3) are two strains commonly used for protein production. As members of the B lineage, they lack lon and OmpT proteases, protecting the produced proteins from degradation.
E. coli is frequently used as a model organism in microbiology studies. Cultivated strains (e.g. E. coli K-12) are well-adapted to the laboratory environment, and, unlike wild type strains, have lost their ability to thrive in the intestine. Many lab strains lose their ability to form biofilms.
Modern lacUV5 is seen in the BL21(DE3) strain, which carries both a lac operon with the standard promoter and a lacUV5 operon split by the DE3 prophage (and as a result driving the T7 RNA polymerase instead). [1] The two important mutations are underlined.
The T7 expression system is used in the field of microbiology to clone recombinant DNA using strains of E. coli. [1] It is the most popular system for expressing recombinant proteins in E. coli. [2] By 2021, this system had been described in over 220,000 research publications. [3]
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E. E. coli long-term evolution experiment; EcoCyc; Enteroaggregative Escherichia coli; Enteroinvasive Escherichia coli; Enterotoxigenic Escherichia coli; EnvZ/OmpR two-component system; Escherichia coli BL21(DE3) Escherichia coli in molecular biology; Escherichia coli NC101; Escherichia coli O104:H4; Escherichia coli O104:H21; Escherichia coli O121