Monday, December 23, 2019

Plasmid Transformation Of E. Coli - 999 Words

Plasmid transformation of E. coli using pVIB Savannah Jacobs April 4th, 2016 BIO 335 Spring 2016 Dr. Koester Abstract Since bacteria are haploid, asexually reproducing organisms it is important for these organisms to be able to accept genetic variability into their genome. A process called transformation, which involves absorbing small segments of DNA from deceased organisms in the natural world, does this. Transformation can also be mimicked in the laboratory using plasmid. Plasmids are small segments of DNA that occur in bacteria that allow us to regulate if transformation was successful. We attempted transformation of E. coli cells using plasmid called pVIB, which allows for luminescence and resistance to the antibiotic ampicillin, from Vibrio fischeri, however, we did not achieve a successful transformation. Introduction Some organisms, such as bacteria, have the ability to transform into a new form by picking up small segments of DNA from other organisms. This process is known as transformation and happens quite often in nature. Quite often organisms die and release their DNA into aqueous environments. The DNA is broken down but it is a while before it is fully destroyed allowing for bacteria cells and other organisms to transform their own DNA using the broken down segments from the deceased organism (Dodd). Transformation is an extremely important step in increasing genetic variation in organisms that reproduce asexually, allowing for them to make bothShow MoreRelatedGene Expression And Its Engineering1634 Words   |  7 PagesIntroduction Transformation is the process of allowing a cell to be able to accept a gene into itself and allow the gene to become part of the cell s whole, thus changing its form and expressing the gene s function. This process was first discovered by the British bacteriologist Frederick Griffith, who was able to transform Streptococcus pneumoniae into a different strain of Strep. in 1928 (1928). This discovery was pivotal in the way we understand gene expression and its engineering. An exampleRead MoreThe Discovery of Transformation by Frederick Grifith in Streptococcus Pneumonia704 Words   |  3 PagesThe discovery of transformation by Frederick Griffith in Streptococcus pneumonia has played an important role in how we are now able to introduce plasmid DNA molecules into cells. Transformation is the uptake of DNA molecules released from the donor cell by the recipient cell. It is one of the three ways bacteria are able to exchange genetic material. In Griffith’s experiment he introd uced mice to two different forms of S. pneumonia, one smooth, pathogenic and encapsulated and the other rough, nonpathogenicRead MoreTransformation Of Escherichia Bacteria And Dna1348 Words   |  6 PagesTransformation of Escherichia coli in different concentrations of Plasmid DNA Introduction This report discusses an experiment which students have to transform and plate competent Escherichia coli in different concentrations of plasmid DNA. This experiment uses four concentrations of plasmid DNA to perform four transformations. These concentrations are namely, 5  µl of distilled water, which acts as the control in this experiment; 2.5  µl of undiluted plasmid DNA; 1.0 µl of undiluted plasmid DNA; andRead MoreUse Of Antibiotic Resistance For A Large Number Of Infections1624 Words   |  7 PagesWard Period 6 January 22, 2015 Transformation Lab Abstract: Ampicillin is a beta-lactam antibiotic which can be used to treat a large number of infections. 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Both plasmids code for ampicillin resistance, however, the lux plasmid codes for a bioluminescence gene that is expressed if properly introduced into the bacteria’s genome. The E. coli cultures were mixed with a calcium chloride solutionRead MoreGenetic Expression In Gene Expression801 Words   |  4 Pagesinclude prokaryotes. Escherichia coli is a bacteria found in the human digestive system, preventing other pathogens from residing. Certain E. coli strains can be pathogenic and can lead to food poisoning, urinary tract infections, pneumonia, and gastrointestinal infections. Ampicillin is an antibiotic used to treat various bacterial infections including the ones mentioned. The antibiotic inhibits transpeptidase, an enzyme found in the cell walls of the bacterium. E. coli is preferably used consideringRead MoreTransformation Of Escherichia Coli With pGLO Plasmid1560 Words   |  7 Pagesï » ¿Transformation Of Escherichia Coli With pGLO Plasmid April 24, 2013 ABSTRACT: This experiment focuses on genetic engineering and transformation of bacteria. The characteristics of bacteria are altered from an external source to allow them to express a new trait, in this case antibiotic resistance. In is experiment foreign DNA is inserted into Escherichia coli in order to alter its phenotype. The goal of the experiment is to transform E. coli with pGLO plasmid, which carries a gene forRead MoreDifferent Methods, Bacteria, And Development Transduction, Transduction And Transformation Transduction934 Words   |  4 Pagestransduction and transformation Transduction is when a bacteriophage inserts it s DNA into the host bacteria cell, while conjugation is when the bacteria shares DNA through direct contact, eg. horizontal gene transfer. The third method, transformation, is the intake of external DNA into the cell (Chen and Dubnau, 2004). In order for bacteria to be able to take in extraneous DNA, they must first be in a state of competent (Hanahan, 1983). There are two types of transformation cells in transformation: natural

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