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What is the role of EtBr in electrophoresis?
Ethidium bromide interchalates with DNA. It doesn't affect electrophoresis, but it help visualise the DNA bands after electrophoresis. The EtBr that is bound to the DNA will fluoresce under ultraviolet light.
Role of ctab in the lysis of cell membrane?
none
What is the role of Ethidium bromide in plasmid isolation?
Ethidium bromide is an intercalator, meaning it inserts itself between the base pairs of DNA. Linear DNA pieces like the genomic DNA fragments bind more ethidium bromide than the circular plasmid DNA. The solution is placed into a tube that is spun extremely fast (roughly 50,000 revolutions per minute) in an ultracentrifuge for about a day. During this time the cesium chloride forms a gradient of lower density at the top of the tube and higher density at the bottom. The genomic and plasmid DNA form tight bands in this gradient. Since the plasmid DNA binds less ethidium bromide it is more dense and is located lower in the tube than the genomic DNA. RNA forms a separate band at the bottom of the tube. These three bands can be visualized by UV light.
Role of CTAB in DNA isolation?
It sequester carbohydrates in the solution
What is the role of Cscl and ethidium bromide in plasmid purification?
The CsCl forms a gradient and the molecules migrate according to their density until they float at their individual isopycnic points (the point in the gradient that equals the buoyant density of the molecule). However, plasmid DNA and contaminating chromosome have about the same density and cannot be separated easily. This is rectified, however, by the addition of ethidium bromide. Density is a function of AT/GC ratio, but it is also a function of conformation. For supercoiled DNA, there is more DNA per unit volume than for relaxed DNA. Intercalation of ethidium bromide into DNA causes the helix to unwind (negative supercoiling) and become more relaxed. However, negative supercoiling only relaxes the DNA to a point. Further unwinding induces supercoiling in the opposite direction. When the DNA is circular and the ends are connected, the plasmid "kinks up" into a very tight knot. Thus, ethidium bromide causes the plasmid density to be increased.
Role of ctab in isolating DNA from soil sample?
CTAB is a surfactant used in the isolation of DNA from tissues containing high amounts of polysaccharides. Under the high-salt conditions of this protocol, CTAB binds the polysaccharides removing them from the solution. When combined with Arabidopsis, this procedure yields pure DNA.
What is role of CTAB - NaCl?
Often used to purified crude cell lysate by precipitating proteins, lipids and polysaccarides out of solution. This leaves only nucleic acid (DNA, RNA) in the supernatant.
What is role of Cetyl trimethyl ammonium bromide in DNA isolation?
it act as as a cationic detergent for the isolation dna from the given sample
What has the author Gordon Stoodley written?
Gordon Stoodley has written: 'The role of ipratropium bromide in the management of acute asthma: a meta-analysis'
Who sings know your role?
Know your role is Dwayne Johnson, The Rock's, theme song. Know Your Role is performed by The Rock and Method Man.
Which training method relies on volunteers acting out a script?
Role-play
What is the role of gram panchayat?
it is very easiest method to solve the local problems.
