Structure and stoichiometry of CTAB–DNA complexes

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7611

Title:	Structure and stoichiometry of CTAB–DNA complexes
Authors:	Madhukar, S Radhakrishnan, A.V. Majhi, Amit Kumar Raghunathan, V.A.
Issue Date:	Dec-2020
Publisher:	American Institute of Physics
Citation:	Journal of Chemical Physics, 2020, Vol.153, p224901
Abstract:	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.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/7611
ISSN:	0021-9606 1089-7690 (Online)
Alternative Location:	https://doi.org/10.1063/5.0033193 https://pubmed.ncbi.nlm.nih.gov/33317309/
Copyright:	2020 American Institute of Physics
Appears in Collections:	Research Papers (SCM)

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