LYCOS RETRIEVER 
Escherichia Coli
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The goal of this group project has been to coordinate and bring up-to-date information on all genes of Escherichia coli K-12. Annotation of the genome of an organism entails identification of genes, the boundaries of genes in terms of precise start and end sites, and description of the gene products. Known and predicted functions were assigned to each gene product on the basis of experimental evidence or sequence analysis. Since both kinds of evidence are constantly expanding, no annotation is complete at any moment in time. This is a snapshot analysis based on the most recent genome sequences of two E.coli K-12 bacteria. An accurate and up-to-date description of E.coli K-12 genes is of particular importance to the scientific community because experimentally determined properties of its gene products provide fundamental information for annotation of innumerable genes of other organisms.
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Unlike eukaryotic expression systems Escherichia coli cannot be used to express foreign genes containing intron sequences (see ...: gene expression). In addition, Escherichia coli does not possess the molecular machinery allowing correct post-translational processing of foreign proteins, which may be of importance in view of medical applications of cytokines as absence of glycosylation may negatively affect immunogenicity, biological activity or such factors as biological half life in vivo. Nevertheless, many of the bacteria-derived cytokines have been found to be biologically active.
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What appears to be a large planet with its circular orange moon is actually Escherichia Coli. Several years ago, the inhabitants of Walkerton, Ontario, turned on their kitchen faucets to get a drink, just the way millions of people do every day. But something was wrong; seven people died, and 2,300 were infected. E-coli from a nearby farmer's field had seeped into the city's drinking water supply.
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The laboratory of Clancy Environmental Consultants (CEC) performed the testing for disinfectant efficacy on organisms including Cryptosporidium (oocysts), Escherichia coli, Enterococcus faecalis and, Pseudomonas aeruginosa. The choice of this laboratory was because it has provided significant support to the US Environmental Protection Agency, AWWA and various other federal and private entities in the drinking water industry. The president of CEC was co-author of a major review article for AWWA entitled "The Evolution of Microbiology in the Drinking Water Industry", P. Rochelle and J. Clancy, J.AWWA, March, 2006.
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The results of this study appear in a paper published by the Proceedings of the National Academy of Sciences (PNAS), entitled: Light-powering Escherichia coli with proteorhodopsin. Co-authoring the paper with Liphardt were UCB graduate students Jessica Walter and Derek Greenfield, and Carlos Bustamante, who ... holds a joint Berkeley Lab-UCB appointment and is a Howard Hughes Medical Institute (HHMI) investigator.
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Escherichia coli strains belonging to the classic EPEC serogroups (Table 25-2) bind intimately to the epithelial surface of the intestine, usually the colon, via the adhesive BFP. The lesion caused by EPEC consists mainly of destruction of microvilli. There is no evidence of tissue invasion. Cell damage occurs in two steps, collectively termed attaching and effacing; first is intimate contact, sometimes characterized as pedestal formation; second is loss of microvilli which is the result of rearrangement of the host cell cytoskeleton. Loss of microvilli leads to malabsorption and osmotic diarrhea. Diarrhea is persistent, often chronic, and accompanied by fever.
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Escherichia Coli