Early Events of DNA Photodamage

2015 ◽  
Vol 66 (1) ◽  
pp. 497-519 ◽  
Author(s):  
Wolfgang J. Schreier ◽  
Peter Gilch ◽  
Wolfgang Zinth
Keyword(s):  
Dna Photodamage

scholarly journals Effects of UV radiation on DNA photodamage and production in bacterioplankton in the coastal Caribbean Sea

1999 ◽  
Vol 20 ◽  
pp. 49-58 ◽  
Author(s):  
PM Visser ◽  
E Snelder ◽  
AJ Kop ◽  
P Boelen ◽  
AGJ Buma ◽  
...  
Keyword(s):  
Uv Radiation ◽  
Caribbean Sea ◽  
Dna Photodamage

Synthesis, dark toxicity and induction of in vitro DNA photodamage by a tetra(4-nido-carboranylphenyl)porphyrin

2002 ◽  
Vol 68 (2-3) ◽  
pp. 123-132 ◽  
Author(s):  
M.G.H Vicente ◽  
D.J Nurco ◽  
S.J Shetty ◽  
J Osterloh ◽  
E Ventre ◽  
...  
Keyword(s):  
Dna Photodamage

Uptake and DNA photodamage induced in plant cells in vivo by two cationic porphyrins

Mutagenesis ◽  
1989 ◽  
Vol 4 (2) ◽  
pp. 157-159 ◽  
Author(s):  
A. Villanueva ◽  
M. Cañete ◽  
M.J. Hazen
Keyword(s):  
Plant Cells ◽  
Cationic Porphyrins ◽  
Dna Photodamage

Skin DNA photodamage and its biological consequences

2008 ◽  
Vol 58 (5) ◽  
pp. S139-S148 ◽  
Author(s):  
Laurent Marrot ◽  
Jean-Roch Meunier
Keyword(s):  
Dna Photodamage

scholarly journals Photochemistry of Thymine in Protic Polar Nanomeric Droplets Using Electrostatic Embeding TD-DFT/MM

Molecules ◽  
2021 ◽  
Vol 26 (19) ◽  
pp. 6021
Author(s):  
Miquel Huix-Rotllant
Keyword(s):  
Gas Phase ◽  
Excited States ◽  
Ground State ◽  
Potential Energy Surfaces ◽  
Radiative Decay ◽  
Td Dft ◽  
Dna Photodamage ◽  
Solvent Molecules ◽  
Energy Surfaces ◽  
Electrostatic Embedding

Thymine photochemistry is important for understanding DNA photodamage. In the gas phase, thymine undergoes a fast non-radiative decay from S2 to S1. In the S1 state, it gets trapped for several picoseconds until returning to the ground-state S0. Here, we explore the electrostatic effects of nanomeric droplets of methanol and water on the excited states of thymine. For this purpose, we develop and implement an electrostatic embedding TD-DFT/MM method based on a QM/MM coupling defined through electrostatic potential fitting charges. We show that both in methanol and water, the mechanism is similar to the gas phase. The solvent molecules participate in defining the branching plane of S0/S1 intersection and have a negligible effect on the S1/S2 intersection. Despite the wrong topology of the ground/excited state intersections, electrostatic embedding TD-DFT/MM allows for a fast exploration of the potential energy surfaces and a qualitative picture of the photophysics of thymine in solvent droplets.

DNA photodamage mechanistic studies: characterization of a thietane intermediate in a model reaction relevant to "6-4 lesions"

1991 ◽  
Vol 113 (14) ◽  
pp. 5481-5483 ◽  
Author(s):  
Pascale Clivio ◽  
Jean Louis Fourrey ◽  
Jeannette Gasche ◽  
Alain Favre
Keyword(s):  
Model Reaction ◽  
Mechanistic Studies ◽  
Dna Photodamage
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