Photoinduced dissociation of cyclobutane thymine dimer studied by semiclassical dynamics simulation

Journal of Photochemistry and Photobiology. B, Biology
Yusheng DouHong Tang

Abstract

Photoinduced dissociation of the thymine dimer is studied in a semiclassical dynamics simulation. The simulation follows excitation of an isolated thymine dimer by a 25 fs fwhm laser pulse, and finds that dissociation proceeds via an asynchronously concerted mechanism, in which the C(5)-C(5)' bond breaks soon after application of the laser pulse, followed by cleavage of the C(6)-C(6)' bond. The dissociation results in two thymine monomers, one in an electronically excited state and the other in the ground state. The former decays to the electronic ground state through an avoided crossing induced by deformation of the pyrimidine ring at the C(5)' and C(6)' sites.

References

Aug 30, 2003·Photochemistry and Photobiology·Bo Durbeej, Leif A Eriksson
Jul 15, 1962·Proceedings of the National Academy of Sciences of the United States of America·R B SETLOW, J K SETLOW
Mar 4, 2005·The Journal of Chemical Physics·Clélia CanuelMohamed Elhanine
Oct 26, 2005·Journal of Photochemistry and Photobiology. B, Biology·Thierry Douki
Apr 8, 2006·The Journal of Physical Chemistry. B·Ru Bo Zhang, Leif A Eriksson
Jul 13, 2006·The Journal of Physical Chemistry. a·Christopher B HarrisonOlaf Wiest
Sep 7, 2006·Proceedings of the National Academy of Sciences of the United States of America·Stéphane MouretThierry Douki
Dec 8, 2006·The Journal of Physical Chemistry. a·Serhiy PerunWolfgang Domcke
Jan 2, 2007·Proceedings of the National Academy of Sciences of the United States of America·Patrick M HareBern Kohler
Jan 4, 2007·Journal of the American Chemical Society·Matthew Ray HolmanSteven E Rokita
Jan 27, 2007·The Journal of Physical Chemistry. a·Yusheng DouRoland E Allen
Feb 3, 2007·Science·Wolfgang J SchreierBern Kohler
Feb 13, 2007·Annual Review of Physical Chemistry·Benjamin G Levine, Todd J Martínez
Aug 19, 2007·Journal of the American Chemical Society·Martial Boggio-PasquaMichael A Robb
Sep 18, 2007·The Journal of Physical Chemistry. B·Lauren L O'NeilOlaf Wiest
Nov 7, 2007·Journal of the American Chemical Society·Lluís Blancafort, Annapaola Migani
Jan 15, 2008·DNA Repair·Rob BeukersPaul H M Lohman
Feb 21, 2008·Journal of the American Chemical Society·Fanny MassonJürg Hutter
Aug 19, 2008·The Journal of Physical Chemistry. a·Gunther Zechmann, Mario Barbatti
Aug 22, 2008·The Journal of Physical Chemistry. a·Yibo LeiZhenyi Wen
Dec 19, 2008·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Fanny MassonJürg Hutter
Mar 25, 2009·Journal of the American Chemical Society·Wolfgang J SchreierPeter Gilch

❮ Previous
Next ❯

Citations

Jul 26, 2012·Photochemistry and Photobiology·Ali EbrahimiAsiyeh Shahraki
Mar 5, 2014·International Journal of Biological Macromolecules·Shuai YuanGlenn V Lo
Dec 20, 2011·Journal of Photochemistry and Photobiology. B, Biology·Saeed Oraee YazdaniMasoud Soleimani
Oct 23, 2012·International Journal of Biological Macromolecules·Yusheng DouGlenn V Lo
Jul 22, 2014·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Mario Barbatti
Oct 13, 2011·The Journal of Physical Chemistry. a·Shuai YuanGlenn V Lo

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.