B-Z DNA conformational transition in 1:1 electrolytes: dependence upon counterion size.

FEBS letters ·Vol. 213 ·No. 2 ·1987-03-23 ·Pages 341-4

Soumpasis DM, Robert-Nicoud M, Jovin TM

Abstract

We have studied the B-Z transition of poly[d(G-C)] in the presence of alkali metal, tetramethylammonium and tetraethylammonium chlorides at room temperature. The measured critical salt concentrations increase in the order Na, K, Rb, TMA, Cs and are in good agreement with the theoretical values predicted from a statistical-mechanical treatment of the transition.

MeSH Terms

Cesium/pharmacology Chlorides/pharmacology DNA Electrolytes/pharmacology Nucleic Acid Conformation/drug effects Polydeoxyribonucleotides Potassium Chloride/pharmacology Quaternary Ammonium Compounds/pharmacology Rubidium/pharmacology Sodium Chloride/pharmacology Tetraethylammonium Tetraethylammonium Compounds/pharmacology

Chemicals

Chlorides Electrolytes Polydeoxyribonucleotides Quaternary Ammonium Compounds Tetraethylammonium Compounds Cesium poly(dC-dG) Sodium Chloride Tetraethylammonium Potassium Chloride DNA cesium chloride tetramethylammonium Rubidium rubidium chloride

Authors & Affiliations

3 authors, click to expand affiliations / ORCID

Soumpasis D M

Robert-Nicoud M

Jovin T M

Article Info

Journal

FEBS letters

Abbr.

FEBS Lett

ISSN

0014-5793

DOI

10.1016/0014-5793(87)81519-3

Published

1987-03-23

Pages

341-4

Language

English

Region

England

NLM ID

0155157

Subset

External Links

PubMed source DOI: 10.1016/0014-5793(87)81519-3 View journal details

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B-Z DNA conformational transition in 1:1 electrolytes: dependence upon counterion size.

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