| Autor: |
Madhukar S; Raman Research Institute, Bangalore 560 080, India., Radhakrishnan AV; Raman Research Institute, Bangalore 560 080, India., Majhi AK; Raman Research Institute, Bangalore 560 080, India., Raghunathan VA; Raman Research Institute, Bangalore 560 080, India. |
| Jazyk: |
angličtina |
| Zdroj: |
The Journal of chemical physics [J Chem Phys] 2020 Dec 14; Vol. 153 (22), pp. 224901. |
| DOI: |
10.1063/5.0033193 |
| Abstrakt: |
We have studied the structure of cetyltrimethylammonium bromide-DNA complexes using small angle x-ray diffraction and elemental analysis. These complexes exhibit a two-dimensional hexagonal phase. The diffraction data have been analyzed using electron density models based on two different structures of these complexes proposed in the literature, which differ in the micelle to DNA stoichiometry. The structure with a 1:2 micelle-DNA stoichiometry is found to be more consistent with the diffraction data. Furthermore, this structure is also supported by the stoichiometry deduced from elemental analysis. Madelung energies of the two structures, calculated from the electrostatic interaction between their cylindrical constituents, give insight into their relative stability. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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