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Compared to other tests, southern blot is a complex technique that has multiple steps and these steps require equipment and reagents that are expensive. [10] High quality and large amounts of DNA are needed. [10] Southern blotting is a time consuming method and can only estimate the size of the DNA since it is a semi-quantitative method. [10]
A Southern blot is a method routinely used in molecular biology for detection of a specific DNA sequence in DNA samples. Southern blotting combines transfer of electrophoresis-separated DNA fragments to a filter membrane and subsequent fragment detection by probe hybridization. [1]
The DNA fragments produced by the digest are then separated by length through a process known as agarose gel electrophoresis and transferred to a membrane via the Southern blot procedure. Hybridization of the membrane to a labeled DNA probe then determines the length of the fragments which are complementary to the probe. A restriction fragment ...
So far this process is very similar to the short-range mapping technique. After Pulsed-field gel electrophoresis, a southern blotting technique is performed and detections of specific fragments using molecular probes occur to complete the production of large-scale restriction maps. The map is created via an elaborate and deductive process of ...
This process is termed Southern blotting. For fluorescent dyes, after electrophoresis the gel is illuminated with an ultraviolet lamp (usually by placing it on a light box, while using protective gear to limit exposure to ultraviolet radiation). The illuminator apparatus mostly also contains imaging apparatus that takes an image of the gel ...
Sir Edwin Mellor Southern FRS FRSE (born 7 June 1938) [4] is an English Lasker Award-winning molecular biologist, Emeritus Professor of Biochemistry at the University of Oxford and a fellow of Trinity College, Oxford. He is most widely known for the invention of the Southern blot, published in 1975 [5] and now a common laboratory procedure. [6 ...
DNA gel electrophoresis is usually performed for analytical purposes, often after amplification of DNA via polymerase chain reaction (PCR), but may be used as a preparative technique for other methods such as mass spectrometry, RFLP, PCR, cloning, DNA sequencing, or southern blotting for further characterization.
Southwestern blotting was first described by Brian Bowen, Jay Steinberg, U.K. Laemmli, and Harold Weintraub in 1979. [2] During the time the technique was originally called "protein blotting". While there were existing techniques for purification of proteins associated with DNA, they often had to be used together to yield desired results.