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Computation of Ionic Distributions Around Charged Biomolecular Structures: Results for Right-handed and Left-handed DNA

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Specialty Science
Date 1991 Jun 1
PMID 1711205
Citations 11
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Abstract

We introduce an efficient computational methodology employing the potentials of mean force approach for estimating the detailed three-dimensional ionic distributions around arbitrarily complex charged biomolecular structures for all monovalent salt concentrations of practical interest (e.g., 0.1-5.0 M NaCl). Such distributions are required for specifying thermodynamic and structure-specific features of ion-mediated interactions of charged proteins, DNA and RNA, membranes, and macromolecular assemblies. As a first application, we present results for distributions around the B and ZI conformers of the DNA oligomer d(C-G)18.d(C-G)18. The ionic microenvironment depends strongly on the DNA conformation, sequence, and bulk salt concentrations.

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References
1.
Soumpasis D, Jovin T . B-Z DNA conformational transition in 1:1 electrolytes: dependence upon counterion size. FEBS Lett. 1987; 213(2):341-4. DOI: 10.1016/0014-5793(87)81519-3. View

2.
Jayaram B, Sharp K, Honig B . The electrostatic potential of B-DNA. Biopolymers. 1989; 28(5):975-93. DOI: 10.1002/bip.360280506. View

3.
Garcia A, Soumpasis D . Harmonic vibrations and thermodynamic stability of a DNA oligomer in monovalent salt solution. Proc Natl Acad Sci U S A. 1989; 86(9):3160-4. PMC: 287086. DOI: 10.1073/pnas.86.9.3160. View

4.
Soumpasis D . Salt dependence of DNA structural stabilities in solution. Theoretical predictions versus experiments. J Biomol Struct Dyn. 1988; 6(3):563-74. DOI: 10.1080/07391102.1988.10506507. View

5.
Soumpasis D, Wiechen J, Jovin T . Relative stabilities and transitions of DNA conformations in 1:1 electrolytes: a theoretical study. J Biomol Struct Dyn. 1987; 4(4):535-52. DOI: 10.1080/07391102.1987.10507658. View