Thermal Effects and Structural Changes of Photosynthetic Reaction Centers Characterized by Wide Frequency Band Hydrophone Effects of Carotenoids and Terbutryn /

Photothermal characteristics and light-induced structural (volume) changes of carotenoid-containing and noncontaining photosynthetic reaction centers (RCs) were investigated by wide frequency band hydrophone. We found that the presence of carotenoid either does not play considerable role in the ligh...

Teljes leírás

Elmentve itt :
Bibliográfiai részletek
Szerzők: Nagy László
Kiss Vladimir
Brumfeld Vlad
Osvay Károly
Börzsönyi Ádám
Magyar Melinda
Szabó Tibor
Dorogi Márta
Malkin Shmuel
Dokumentumtípus: Cikk
Megjelent: 2015
Sorozat:PHOTOCHEMISTRY AND PHOTOBIOLOGY 91 No. 6
Tárgyszavak:
doi:10.1111/php.12511

mtmt:2951254
Online Access:http://publicatio.bibl.u-szeged.hu/27376
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520 3 |a Photothermal characteristics and light-induced structural (volume) changes of carotenoid-containing and noncontaining photosynthetic reaction centers (RCs) were investigated by wide frequency band hydrophone. We found that the presence of carotenoid either does not play considerable role in the light-induced conformational movements, or these rearrangements are too slow for inducing a photoacoustic (PA) signal. The kinetic component with a few tens of microseconds, exhibited by the carotenoid-less RCs, appears to be similar to that of triplet state lifetimes, identified by other methods. The binding of terbutryn to the acceptor side is shown to affect the dynamics of the RC. Our results do not confirm large displacements or volume changes induced by the charge movements and by the charge relaxation processes in the RCs in few hundreds of microseconds time scale that accompanies the electron transfer between the primary and secondary electron acceptor quinones. 
650 4 |a Fizikai tudományok 
650 4 |a Biológiai tudományok 
700 0 1 |a Kiss Vladimir  |e aut 
700 0 1 |a Brumfeld Vlad  |e aut 
700 0 1 |a Osvay Károly  |e aut 
700 0 1 |a Börzsönyi Ádám  |e aut 
700 0 1 |a Magyar Melinda  |e aut 
700 0 1 |a Szabó Tibor  |e aut 
700 0 1 |a Dorogi Márta  |e aut 
700 0 1 |a Malkin Shmuel  |e aut 
856 4 0 |u http://publicatio.bibl.u-szeged.hu/27376/1/PhotochemPhotobiology-2015-Nagy-ThermalEffectsandStructuralChangesofPhotosyntheticReactionCenters.pdf  |z Dokumentum-elérés