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31-Jan-2020 19:58

Comparison with five other sequenced microbes reveals ubiquitous as well as narrowly distributed gene families; many families of similar genes within E. The largest family of paralogous proteins contains 80 ABC transporters.The genome as a whole is strikingly organized with respect to the local direction of replication; guanines, oligonucleotides possibly related to replication and recombination, and most genes are so oriented.The bacterium can be grown and cultured easily and inexpensively in a laboratory setting, and has been intensively investigated for over 60 years. coli is a chemoheterotroph whose chemically defined medium must include a source of carbon and energy. coli is the most widely studied prokaryotic model organism, and an important species in the fields of biotechnology and microbiology, where it has served as the host organism for the majority of work with recombinant DNA.Under favorable conditions, it takes up to 20 minutes to reproduce. coli is a Gram-negative, facultative anaerobe (that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation or anaerobic respiration if oxygen is absent) and nonsporulating bacterium. coli stains Gram-negative because its cell wall is composed of a thin peptidoglycan layer and an outer membrane. coli picks up the color of the counterstain safranin and stains pink. coli can live on a wide variety of substrates and uses mixed acid fermentation in anaerobic conditions, producing lactate, succinate, ethanol, acetate, and carbon dioxide.The process of transduction, which uses the bacterial virus called a bacteriophage, E. the K-12 strain commonly used in recombinant DNA work) are sufficiently different that they would merit reclassification.coli encompasses an enormous population of bacteria that exhibit a very high degree of both genetic and phenotypic diversity. coli strains, a phenomenon termed taxa in disguise. A strain is a subgroup within the species that has unique characteristics that distinguish it from other strains. coli ancestor split between 20 and 30 million years ago. coli typically do not have the ability to grow aerobically with citrate as a carbon source, which is used as a diagnostic criterion with which to differentiate E.

The B period occurs between the completion of cell division and the beginning of DNA replication.

In addition, this strain causes the buildup of fluid (since the kidneys do not work), leading to edema around the lungs and legs and arms.