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Cloning in Escherichia coli
Cloning in Escherichia coli

... pGEM-T® has many of the basic features of bacterial plasmids. It is a relatively small circular DNA molecule that has its own origin of replication (“f1 ori”) so that it can be replicated in cells to high copy number, a selectable marker (“Ampr”) that confers antibiotic resistance, and a “multiple c ...
Viral replication factories/site(s) inside live host: Replication forks
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... Viral replication factories/site(s) inside live host: Replication forks visualized in T4infected Escherichia coli Srivathsa Nallanchakravarthula Every living organism maintains its continuity by passing more or less accurate copies of its hereditary information to the next generation with the help o ...
Chapter 14: DNA Technologies
Chapter 14: DNA Technologies

... 4. Restriction enzymes vary in the number of DNA bases they recognize a) A restriction enzyme that recognizes a large number of bases has a low probability of cutting in an inappropriate spot and is useful in research on entire chromosomes C. Recombinant DNA is formed when DNA is spliced into a vect ...
Transformation of competent cells and clone
Transformation of competent cells and clone

... bacteria that do take up a plasmid gain a selective advantage; plasmids contain antibiotic resistance genes in them, and when spread onto on an agar plate that contains antibiotics, only those bacteria that contain a plasmid will survive this results in small colonies of bacteria to form on the plat ...
Integrated Programme Sec 2 SBGE, LSS Biology Module Topic
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... Diseases may be transmitted from animals to humans who use animal insulin Insulin produced by genetic engineering will not cause the above problems ...
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... Ligate (insert) GAPC gene into plasmid vector Transform bacteria with new plasmid Isolate plasmid from bacteria Confirm plasmid by restriction digests Prepare plasmid DNA to be sequenced by outside ...
What is a Virus? - columbusisd.org
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...  Composite Transposons are more complex than insertion sequences containing multiple genes sandwiched between the insertion sequences.  Generate genetic diversity by moving genes from one chromosome to another, or another species. ...
Way to Glow! Teacher Package
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... Aequorea victoria, into the bacterium Escherichia coli by using the pFluoroGreen (pFG) plasmid as a vector (transport mechanism). In addition to one large circular chromosome, which contains all the genes a bacterium needs for its normal existence, bacteria also naturally contain one or more tiny ci ...
Biosafety - The University of Iowa
Biosafety - The University of Iowa

... are assembled, the accessory genes required for subsequent viral replications are not included; therefore, the vector is replication deficient. Adeno Associated Virus (AAV)-based Vector The AAV vectors are gutless vectors. The AAV ITRs, consisting of only 6% of the wild-type AAV genome, are the only ...
AP Bio 11 Biotechnology - STaRT
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recombinant dna research registration - SUNY-ESF
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... host does not contain conjugation proficient plasmids or generalized transducing phages; or (ii) lambda or lambdoid or Ff bacteriophages or non-conjugative plasmids (see Appendix C-VII-B, Footnotes and References of Appendix C), shall be used as vectors. However, experiments involving the insertion ...
Gel Electophoresis: Forensic Plasmid DNA identification
Gel Electophoresis: Forensic Plasmid DNA identification

... 2. Explain how DNA is isolated from bacteria, such as E.Coli. What chemical reagents are used and what is the function of each reagent? 3. What are restriction enzymes? Explain how DNA samples are cut and prepared for electrophoresis with restriction enzymes. What enzymes did we use? What bacteria a ...
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... 3. Genetic engineering prospects and application In the following part of discussion, we are interesting to give a view on what so-called genetic engineering which is the molecular biology and genetics. Molecular biology is the science that treats research activities on cell molecular level, similar ...
Ch. 9: Presentation Slides
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... 3. The vector contains a multiple cloning site (MCS), or polylinker, with unique cleavage sites for many different restriction enzymes that enables many types of restriction fragments to be inserted 4. Cells containing the vector can usually be selected by a straightforward assay, most conveniently ...
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... naturally the barrier between a variety of gram-positive and gram-negative eubacteria, with subsequent expression in the new host. Although we did not make any attempt to determine the nature of the transfer process (transformation versus conjugation), there are indications that favor a conjugationl ...
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... isolate a gene by conventional biochemical procedures. This is why recombinant DNA technology is so important; it can be used to isolate and amplify a specific gene relatively simply. Plasmids, small circular DNA molecules, are usually extra chromosomal; they exist apart from the chromosomes in most ...
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... of genetic manipulations. There are ubiquitous inhabitants of many environment and are known as efficient degraders of many toxic substances. Both their chromosome and plasmids may carry genes for metabolism of these compounds. Therefore, such microorganisms are the main source of catabolic genes fo ...
PGLO Transformation LAB AP LAB 7
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... together in what is known as the arabinose operon.3 These three proteins are dependent on initiation of transcription from a single promoter, PBAD. Transcription of these three genes requires the simultaneous presence of the DNA template (promoter and operon), RNA polymerase, a DNA binding protein c ...
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... • However, the cell has mechanisms to protect against mutation - during replication, the new DNA is proofread, and most mistakes are corrected - mutations that remain after proofreading may be corrected by other DNA repair mechanisms - mutated DNA that can not be repaired is usually recognized, and ...
Brooker Chapter 18 - Volunteer State Community College
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... Note: In this case, the b-globin gene was inserted into the plasmid It is also possible for any other DNA fragment to be inserted into the plasmid And it is possible for the plasmid to circularize without an insert This is called a recircularized vector ...
Science at the heart of medicine  William R. Jacobs, Jr., Ph.D.
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... In 1987, Dr. Jacobs set up his own lab at Einstein and began to isolate mycobacterial phages from the dirt in his backyard. His phage collection has grown over the years, thanks to high school students in his summer Phage Phinders program. Dr. Jacobs uses these phages to genetically manipulate mycob ...
Microbiology Babylon university 2nd stage pharmacy collage
Microbiology Babylon university 2nd stage pharmacy collage

... in chromosomes separated by a distinctive mitotic apparatus during cell division. In general, genetic transfer among eukaryotes depends upon fusion of haploid gametes to form a diploid cell containing a full set of genes derived from each gamete. The life cycle of many eukaryotes is almost entirely ...
AP Bio Ch.18 “Genetics of Viruses and Bacteria” The Genetics of Viruses
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... themselves from invasion by viral bacteriophages (“bacteria eaters”) or other bacteria by cutting up foreign DNA, a process ...
Foundations in Microbiology
Foundations in Microbiology

... manipulate and can be transferred into appropriate host cells through transformation • Bacteriophages – have the natural ability to inject their DNA into bacterial hosts through transduction ...
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Plasmid



A plasmid is a small DNA molecule within a cell that is physically separated from a chromosomal DNA and can replicate independently. They are most commonly found in bacteria as small, circular, double-stranded DNA molecules; however, plasmids are sometimes present in archaea and eukaryotic organisms. In nature, plasmids often carry genes that may benefit the survival of the organism, for example antibiotic resistance. While the chromosomes are big and contain all the essential information for living, plasmids usually are very small and contain only additional information. Artificial plasmids are widely used as vectors in molecular cloning, serving to drive the replication of recombinant DNA sequences within host organisms.Plasmids are considered replicons, a unit of DNA capable of replicating autonomously within a suitable host. However, plasmids, like viruses, are not generally classified as life. Plasmids can be transmitted from one bacterium to another (even of another species) via three main mechanisms: transformation, transduction, and conjugation. This host-to-host transfer of genetic material is called horizontal gene transfer, and plasmids can be considered part of the mobilome. Unlike viruses (which encase their genetic material in a protective protein coat called a capsid), plasmids are ""naked"" DNA and do not encode genes necessary to encase the genetic material for transfer to a new host. However, some classes of plasmids encode the conjugative ""sex"" pilus necessary for their own transfer. The size of the plasmid varies from 1 to over 200 kbp, and the number of identical plasmids in a single cell can range anywhere from one to thousands under some circumstances.The relationship between microbes and plasmid DNA is neither parasitic nor mutualistic, because each implies the presence of an independent species living in a detrimental or commensal state with the host organism. Rather, plasmids provide a mechanism for horizontal gene transfer within a population of microbes and typically provide a selective advantage under a given environmental state. Plasmids may carry genes that provide resistance to naturally occurring antibiotics in a competitive environmental niche, or the proteins produced may act as toxins under similar circumstances, or allow the organism to utilize particular organic compounds that would be advantageous when nutrients are scarce.
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