- DNA, or RNA fragments) can be separated according to size and electrical charge by applying an electric current to them while they are in a gel. The current forces the molecules through pores in a thin layer of gel, a firm jelly-like substance. The gel can be made so that its pores are just the right dimensions for separating molecules within a specific range of sizes and shapes. Smaller fragments usually travel further than large ones.
* * *gel electrophoresis n electrophoresis in which molecules (as proteins and nucleic acids) migrate through a gel and esp. a polyacrylamide gel and separate into bands according to size
* * *a type of zone electrophoresis in which the support medium is a gel, in the form of tubes or a thin slab; it is usually composed of agarose, polyacrylamide, or starch and is so named. Specific types are used to separate certain classes of molecules on the basis of change, size, or both.
Medical dictionary. 2011.
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Gel electrophoresis — apparatus – An agarose gel is placed in this buffer filled box and electrical field is applied via the power supply to the rear. The negative terminal is at the far end (black wire), so DNA migrates toward the camera. Classification… … Wikipedia
Gel electrophoresis — electrophoresis electrophoresis n. 1. (Chem.) the motion of charged molecules or particles in a liquid medium under the influence of an electric field; particles with a positive charge move toward the cathode and negative to the anode. [WordNet… … The Collaborative International Dictionary of English
gel electrophoresis — Electrophoresis using a gel supporting phase. Usually applied to systems where the gel is based on polyacrylamide. See electrophoresis … Dictionary of molecular biology
gel electrophoresis — noun : electrophoresis in which molecules (as proteins and nucleic acids) migrate through a gel and especially a polyacrylamide gel and separate into bands according to size * * * Biochem. a technique for separating protein molecules of varying… … Useful english dictionary
gel electrophoresis — noun Date: 1955 electrophoresis in which molecules (as proteins and nucleic acids) migrate through a gel and especially a polyacrylamide gel and separate into bands according to size … New Collegiate Dictionary
Gel electrophoresis — Électrophorèse sur gel L électrophorèse sur gel est une variante de l électrophorèse de zones. Très utilisée en biochimie ou en biologie moléculaire, cette technique d électrophorèse permet de séparer des molécules en fonction de leur taille… … Wikipédia en Français
gel electrophoresis — See: electrophoresis … Glossary of Biotechnology
gel electrophoresis — Biochem. a technique for separating protein molecules of varying sizes in a mixture by moving them through a block of gel, as of agarose or polyacrylamide, by means of an electric field, with smaller molecules moving faster and therefore farther… … Universalium
gel electrophoresis — Using a gel medium to separate charged molecules … Forensic science glossary
Gel electrophoresis of nucleic acids — Digital printout of an agarose gel electrophoresis of cat insert plasmid DNA … Wikipedia