Sieving of double‐stranded DNA during agarose gel electrophoresis

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Abstract

Agarose gel electrophoresis is used to fractionate linear, double‐stranded DNA by its length. Sieving of the gel is the cause of this fractionation and has been investigated by developing theoretical models and by quantifying sieving observed during electrophoresis. Here are reviewed the following aspects of the fractionation of linear, double‐stranded DNA by agarose gel electrophoresis: (1) the basic observations that qualitatively characterize these fractionations, (2) evidence for the deformation of DNA's random coil, (3) quantitative analysis of the relationship of observed electro‐phoretic mobility to the DNA's length, (4) theoretical models that have been developed to explain data presented in Sections 1–3, (5) observations not yet quantitatively explained by models, and (6) some aspects of the use of a variable electrical field (pulsed‐field gel electrophoresis) to improve separations.

Original languageEnglish (US)
Pages (from-to)327-331
Number of pages5
JournalELECTROPHORESIS
Volume10
Issue number5-6
DOIs
StatePublished - 1989

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry

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