Micro-mechanical measurement of the torsional modulus of DNA

Authors
Strick, TR Bensimon, D Croquette, V
Citation
Tr. Strick et al., Micro-mechanical measurement of the torsional modulus of DNA, GENETICA, 106(1-2), 1999, pp. 57-62
Citations number
13
Categorie Soggetti
Molecular Biology & Genetics
Journal title
GENETICA
ISSN journal
00166707 → ACNP
Volume
106
Issue
1-2
Year of publication
1999
Pages
57 - 62
Database
ISI
SICI code
0016-6707(199910)106:1-2<57:MMOTTM>2.0.ZU;2-7
Abstract
The torsional modulus C of DNA is determined from the difference between th e work of stretching a single overwound molecule and the work done in stret ching one underwound by the same number of turns. The value obtained C/k(B) T=86 +/- 10 nm is within the range (75 +/- 25 nm) estimated by more indirec t methods.