Laura Gallagher Partner: Rob Einersen Biology Period D Mr. Alvarez 15 February 2013 Gel Electrophoresis Introduction: Agarose Gel Electrophoresis is a process in which the process of determining whether a strand of DNA is either positively or negatively charged. The container in which the gel is stored has a negative and positive side; whichever side the DNA molecules go to means the DNA is charged the opposite way. (Ware‚ Lunte‚ Gardiner)For example if a DNA molecule
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OUTLINE What is PCR and Gel Electrophoresis? • Polymerase chain reaction (PCR) is a technique which is used to amplify the number of copies of a specific region of DNA‚ in order to produce enough DNA to be adequately tested. This technique can be used to identify with a very high-probability‚ disease-causing viruses and/or bacteria‚ a deceased person‚ or a criminal suspect. • Gel electrophoresis is a widely used technique for separating electrically charged molecules. It is a central technique
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materials may be stored at room temperature (approximately 25°C). Use and Lab Safety: The materials supplied are for use with the method described in this kit only. Use of this kit presumes and requires prior knowledge of basic methods of gel electrophoresis and staining of DNA. Individuals should use this kit only in accordance with prudent laboratory safety precautions and under the supervision of a person familiar with such precautions. Use of this kit by unsupervised or improperly supervised
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forensic anthropologists ran a gel electrophoresis with DNA from Skeleton 3 and two missing persons‚ Julia Ly and Teresa Chen to help in DNA identification. This process would allow restriction enzymes to cut by a specific restriction site and run through the gel‚ where the DNA fragments would move from the negative side to the positive side of the gel due to the negative charge of the phosphate group in DNA. The smaller the DNA fragments‚ the further they move down the gel. As mentioned above‚ the DNA
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pairs. Electrophoresis is an extremely useful tool in order to compare the mobility on agarose gels with dna markers of known lengths. Dna is a polymer that is negatively charged due to the sugar phosphates. When dna is on an electric field such as the electrophoresis gel the different lengths of dna migrate at different rates when they move through the porous gel. The ends of the gel are marked with a negative and a positive charge this forces the negative charged dna to move through the gel which
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Christian Hogdohm Gel Electrophoresis I. Introduction: A typical electrophoresis has five major parts: the electrical current‚ DNA‚ RNA‚ or protein sample‚
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When electrophoresis is done‚ proteins in a sample can be quantitated and analyzed. The separation of macromolecules in an electric field is called electrophoresis. A very common method for separating proteins by electrophoresis uses a discontinuous polyacrylamide gel as a support medium and sodium dodecyl sulfate (SDS) to denature the proteins. The method is called sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) where one can obtain information about the size of a protein or
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proteins are electrophoresed into a gel‚ as the proteins migrate through the gel they are separated based upon size and charge. Characteristically‚ smaller proteins migrate through the gel faster than larger proteins. Sufficiently separated proteins in an SDS-PAGE can be transferred to a solid membrane (PVDF or Nitrocellulose) for WB analysis. For this procedure‚ an electric current is applied to the gel so that the separated proteins transfer through the gel onto the membrane. To detect the antigen
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The two techniques that were used to create a DNA profile in this experiment were PCR and gel electrophoresis. The PCR is used to amplify the several DNA samples and gel electrophoresis is performed to separate the DNA fragments according to their size. [6] In the first part of the experiment‚ PCR amplification of the DNA templates was performed and the products obtained were used to perform gel electrophoresis. The process of PCR allows for the amplification of the DNA samples and the components needed
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Electrophoresis Electrophoresis is a method to separate body substances; this technique isolates them by placing the sample in an electric field. This phenomenon was first observed in 1807 by Reuss from Moscow State University who noticed that a constant electric field caused clay particles dispersed in water to migrate. It is caused by the presence of charges of the surface of the particle and the surrounding fluid. This was perfected in 1937 by Arne Tiselius (1902-1971). It is used in forensic
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