http://www.cnr.it/ontology/cnr/individuo/prodotto/ID10147
Measuring the translational diffusion coefficients of small DNA molecules by capillary electrophoresis. (Articolo in rivista)
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- Label
- Measuring the translational diffusion coefficients of small DNA molecules by capillary electrophoresis. (Articolo in rivista) (literal)
- Anno
- 2001-01-01T00:00:00+01:00 (literal)
- Alternative label
Stellwagen N.C., Magnusdottir S., Gelfi C., Righetti P.G. (2001)
Measuring the translational diffusion coefficients of small DNA molecules by capillary electrophoresis.
in Biopolymers (Print)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Stellwagen N.C., Magnusdottir S., Gelfi C., Righetti P.G. (literal)
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- ISI Web of Science (WOS) (literal)
- Titolo
- Measuring the translational diffusion coefficients of small DNA molecules by capillary electrophoresis. (literal)
- Abstract
- The apparent translational diffusion coefficients of four 20 base pair (bp) DNA oligonucleotides with different sequences have been measured by capillary electrophoresis, using the stopped migration method. The diffusion coefficients of the four oligomers were equal within experimental error, and averaged (120 +/- 10) x 10(-8) cm(2) s(-1) in 40 mM Tris-acetate-EDTA buffer at 25 degrees C. Since this value is nearly identical to the translational diffusion coefficient determined for a different 20-bp oligomer using other methods, the stopped migration method can accurately measure the diffusion coefficients of small DNA oligomers. The apparent diffusion coefficient of a 118-bp DNA restriction fragment was also measured by the stopped migration method. However, the observed value was approximately 25% larger than expected from other measurements, possibly because the diffusion coefficients of larger DNA molecules are somewhat dependent on the ionic strength of the solution. Copyright 2001 John Wiley & Sons, Inc. Biopolymers 58: 390-397, 2001.
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