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Finding a universal low-viscosity polymer for DNA separation

C Heller1

  • 1Max-Planck-Institut für molekulare Genetik, Berlin-Dahlem, Germany. heller@mpimg-berlin-dahlem.mpg.de

Electrophoresis
|August 27, 1998
PubMed
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Dextran exhibits low viscosity, making it ideal for capillary electrophoresis DNA separations. Its versatility extends to separating proteins and DNA, positioning it as a universal biopolymer matrix.

Area of Science:

  • Biochemistry
  • Polymer Science
  • Analytical Chemistry

Background:

  • Capillary electrophoresis (CE) is a powerful separation technique.
  • Polymer matrices are crucial for DNA and protein separations in CE.
  • Low-viscosity matrices are desirable for efficient matrix replacement in CE.

Purpose of the Study:

  • To investigate the viscosity of commercially available polymers.
  • To evaluate dextran as a matrix for DNA separation in capillary electrophoresis.
  • To assess dextran's potential as a universal biopolymer separation matrix.

Main Methods:

  • Viscosity measurements of various polymers in solution.
  • Capillary electrophoresis experiments for oligonucleotide and double-stranded DNA fragment separation using dextran.

Related Experiment Videos

  • Comparison of dextran's performance against other polymers.

    • Main Results:

    • Dextran demonstrated significantly lower viscosity compared to other polymers of similar molecular weight and resolving power.
    • Dextran effectively separated oligonucleotides and double-stranded DNA fragments in capillary electrophoresis.
    • Dextran's performance was suitable for applications requiring short run times or low operating pressures.

    Conclusions:

    • Dextran's low viscosity makes it a promising matrix for DNA separation in capillary electrophoresis.
    • Dextran's demonstrated efficacy in separating both DNA and proteins establishes it as a versatile biopolymer matrix.
    • Dextran offers advantages for CE applications prioritizing speed and efficiency.