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bacterial genetic
bacterial genetic

... • Is an extrachromosomal genetic element that occurs in many bacterial strains. • Plasmids are circular deoxyribonucleic acid (DNA) molecules that replicate independently of the bacterial chromosome. • They are not essential for the bacterium but may confer a selective advantage. • Two common classe ...
Replication of the DNA
Replication of the DNA

... – Transform this new vector into bacterial cells. – Those cells containing a plasmid survive, while those which did not get a plasmid are killed. ...
Stem cells - Plain Local Schools
Stem cells - Plain Local Schools

... D. Transcription factors are activated and deactivated by certain chemical signals in the cell 1. Hormones may attach to transcription factors to signal gene expression- the transcription and translation of genes into proteins ...
Current Microbiology 40:
Current Microbiology 40:

... enhancement of phosphate diffusion [1], inorganic phosphates in the soil may become more available for uptake by the roots of plants. The solubilization of organic phosphate is carried out by bacteria with the help of phosphatase enzymes, especially acid phosphatases, which play the major role in or ...
Cloning in biology is the process of producing similar populations of
Cloning in biology is the process of producing similar populations of

... could be required to produce one viable clone. In addition to low success rates, cloned animals tend to have more compromised immune function and higher rates of infection, tumor growth, and other disorders. Japanese studies have shown that cloned mice live in poor health and die early. About a thir ...
Microbial growth requirements:
Microbial growth requirements:

... -Most prokaryotic genes are carried on the bacterial chromosome, a single circle of DNA. -Many bacteria contain additional genes on plasmids. -Plasmid is an extra-circular supercoiled DNA that carry some important genes such as the antibiotics resistance genes. ...
Microbial growth requirements:
Microbial growth requirements:

... -Most prokaryotic genes are carried on the bacterial chromosome, a single circle of DNA. -Many bacteria contain additional genes on plasmids. -Plasmid is an extra-circular supercoiled DNA that carry some important genes such as the antibiotics resistance genes. ...
10/16
10/16

... tbl 18.3 ...
Lecture: How do neurons work
Lecture: How do neurons work

... molecule at the point they seek (sequence GAATTC). They cut one strand of the DNA double helix at one point and the second strand at a different, complementary point (between the G and the A base). The separated pieces have single-stranded "sticky ends," which allow the complementary pieces to combi ...
Essential software for all your sequence analysis needs
Essential software for all your sequence analysis needs

... Use SeqBuilder to quickly and accurately annotate your sequences — either one at a time or as a large batch — using a carefully curated database of features. Simply select your sequences and SeqBuilder will provide you with a list of matched features for your consideration, making it easy to identif ...
Chapter 17 Recombinant DNA and Biotechnology
Chapter 17 Recombinant DNA and Biotechnology

... • genetic engineering requires lots of DNA – cloning produces lots of exact copies – DNA clones are replicated by host cells – DNA is cloned in a DNA vector – a DNA vector has an origin of replication (ori) that the host cell recognizes ...
MCQ- V-Semester 2015 - KLE College of Pharmacy
MCQ- V-Semester 2015 - KLE College of Pharmacy

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Multiple GMO
Multiple GMO

... Use the table below to enter the details of all GMOs being used in the project (See example table at the end for reference). Add more rows if necessary. 2. Determine the GMO dealing classification 3. Upload completed table in Section 7 of the online form ...
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A series of vectors for fungal transformation
A series of vectors for fungal transformation

... modified polylinker in pBluescript II and pBC (pCB1519 and pCB1520, respectively) where the XhoI site is flanked on both sides by SmaI sites. Second, the selectable markers were cloned into common cloning vectors outside the polylinker, thus leaving the lacZ gene intact. Most of the restriction enzy ...
Microbial growth requirements Chemical growth factors
Microbial growth requirements Chemical growth factors

... -Most prokaryotic genes are carried on the bacterial chromosome, a single circle of DNA. -Many bacteria contain additional genes on plasmids. -Plasmid is an extra-circular supercoiled DNA that carry some important genes such as the antibiotics resistance genes. ...
Ch. 9: Presentation Slides
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... • A vector is, therefore, a DNA molecule into which another DNA fragment can be cloned—it is a carrier for recombinant DNA ...
Gene Gorging Mutagenesis for the Geobacteraceae
Gene Gorging Mutagenesis for the Geobacteraceae

... I, of which one linear fragment is the mutant allele. 17. The multiple copies of this allele make it likely that it will replace the wild type allele on the chromosome; hence the name “gene gorging.” 18. Linearization of the mutant allele with I-Sce I forces a double crossover within the allele itse ...
Three Way Gateway Reactions for Modular Gene
Three Way Gateway Reactions for Modular Gene

... exon and employs R1-L1 and R1-L2 Gateway sites. The R1 and R2 sites flank a negative selection marker (pheS, a conditional negative selection marker; see below) on the intermediate vector plasmid(ampR, ZeoR) and the L1 and L2 sites flank a gene targeting element(eg. –SA-T2-LacZ-T2-neo-pA) on a secon ...
Genetics and Recombinant DNA
Genetics and Recombinant DNA

...  Extrachromosomal, circular small (2-3 kb) DNA in a bacterial cell which can replicate independently but which cannot integrate into the host chromosome.  Drug resistance plasmids are not essential for the cell's growth, but confer antibiotic resistance.  Plasmids used for molecular cloning ha ...
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K pneumoniae, E coli

... plasmids, causes plasmid transfer between E. faecalis isolates at a very high frequency . • Another mechanism involves plasmids that can transfer among a broad range of species and genera, although usually at a moderately low frequency . • A third mechanism (conjugative transposition) involves trans ...
Trends in Biotechnology
Trends in Biotechnology

... of PCR, and what researchers do with PCR. 11. Compare the two methods of DNA sequencing: the chemical method and the Sanger method, and know which method is more widely used. How does automation change DNA sequencing? ...
Supplemental Material
Supplemental Material

... min., followed by gel analysis. D) 2D-gel analysis of replication intermediates from the rtf1-L162Y strain. The PstI-SacI fragment of plasmid pSC11 is analyzed. An analysis of plasmid pSC11 in the wild-type background is shown in Fig. 5C lower panel. E) The RTS1 sequence is required barrier activity ...
Genetic Technology - Solon City Schools
Genetic Technology - Solon City Schools

...  Biological Vectors  Viruses ...
Mechanisms of Genetic exchange
Mechanisms of Genetic exchange

... transferred because the virus involved is initially cytolytic. A cytolytic virus typically chops up the chromosome of its host shortly after entering, and then uses the components released (nucleotides) to synthesize copies of its own genome. During transduction, some of the host cell's chromosomal ...
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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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