ON MECHANISM OF NONLINEAR LASER CLEAVAGE OF DNA

Authors
BENIMETSKAYA LZ KOZIONOV AL NOVOZHILOV SY STOCKMAN MI
Citation
Lz. Benimetskaya et al., ON MECHANISM OF NONLINEAR LASER CLEAVAGE OF DNA, Biofizika, 42(3), 1997, pp. 607-610
Citations number
7
Categorie Soggetti
Biophysics
Journal title
Biofizika → ACNP
ISSN journal
00063029
Volume
42
Issue
3
Year of publication
1997
Pages
607 - 610
Database
ISI
SICI code
0006-3029(1997)42:3<607:OMONLC>2.0.ZU;2-S
Abstract
Dependences of nonlinear laser cleavage of DNA on a concentration of t he free-radical scavenger, beta-mercaptoethanol, have been measured. T he obtained data rule out the free-radical mechanism of the nonlinear laser cleavage and agree with the mechanism based on two-quantum excit ation energy transfer from a dye to DNA. A high concentration of beta- mercaptoethanol has been found to cause DNA hyperchromicity.