Journal
JOURNAL OF PHYSICAL CHEMISTRY B
Volume 113, Issue 24, Pages 8319-8323Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp810966n
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Funding
- D.I.GYT [CTQ-2008-00008/BQU]
- Consejerfa de Educacion y Ciencia de la Junta de Andalucia
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A kinetic study of the interaction of the surfactant cetyltrimethylammonium (CTA(+)) with DNA was carried out in water and in salt (NaCl) solutions. The results can be explained in terms of a reaction mechanism involving two consecutive reversible steps. The first step corresponds to the union/separation of the surfactant with/from the DNA. The second step corresponds to a conformational change of the surfactant/DNA complex. The equilibrium constant, calculated from the forward and reverse rate constants of these steps, agrees with the results of a previous thermodynamic study.
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