Dependence of counterion binding on DNA shape as determined by counterion condensation theory

Authors
Fenley, MO Olson, WK Manning, GS
Citation
Mo. Fenley et al., Dependence of counterion binding on DNA shape as determined by counterion condensation theory, MACROMOLEC, 33(5), 2000, pp. 1899-1903
Citations number
29
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULES
ISSN journal
00249297 → ACNP
Volume
33
Issue
5
Year of publication
2000
Pages
1899 - 1903
Database
ISI
SICI code
0024-9297(20000307)33:5<1899:DOCBOD>2.0.ZU;2-L
Abstract
We have computed the fraction of DNA phosphate charge neutralized by conden sed counterions for parallel pairs of linear DNA segments, DNA circles, and representative closed-circular supercoiled DNA configurations ranging in l ength from 42 to 3000 base pairs. We find significant but small uptake of c ondensed counterions for the more compact structures relative to an isolate d linear DNA segment.