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Agarose gel electrophoresis is a method of gel electrophoresis used in biochemistry, molecular biology, genetics, and clinical chemistry to separate a mixed population of macromolecules such as DNA or proteins in a matrix of agarose, one of the two main components of agar.
Gel electrophoresis of large DNA or RNA is usually done by agarose gel electrophoresis. See the " chain termination method " page for an example of a polyacrylamide DNA sequencing gel. Characterization through ligand interaction of nucleic acids or fragments may be performed by mobility shift affinity electrophoresis .
For a standard agarose gel electrophoresis, 0.7% gel concentration gives good separation or resolution of large 5–10kb DNA fragments, while 2% gel concentration gives good resolution for small 0.2–1kb fragments.
Southern blot agarose gel under ultraviolet illumination. Southern blot autoradiogram. Southern blot is a method used for detection and quantification of a specific DNA sequence in DNA samples. This method is used in molecular biology.
Proteins separated by SDS-PAGE, Coomassie brilliant blue staining. Protein electrophoresis is a method for analysing the proteins in a fluid or an extract. The electrophoresis may be performed with a small volume of sample in a number of alternative ways with or without a supporting medium, namely agarose or polyacrylamide.
Gel conditions are 1% agarose, 3 volt/cm, and ethidium bromide stain. A molecular-weight size marker, also referred to as a protein ladder, DNA ladder, or RNA ladder, is a set of standards that are used to identify the approximate size of a molecule run on a gel during electrophoresis, using the principle that molecular weight is inversely ...
An electrophoretic color marker is a chemical used to monitor the progress of agarose gel electrophoresis and polyacrylamide gel electrophoresis (PAGE) since DNA, RNA, and most proteins are colourless. [1] The color markers are made up of a mixture of dyes that migrate through the gel matrix alongside the sample of interest. They are typically ...
The electrophoresis was performed in thin layers of agarose; the pictured gel is about 7x7 cm. The lower part is the first dimension gel without antibodies, where the serum was applied into the slot at the lower left. The upper part is the second dimension gel with Dako antibodies against human serum proteins.