PMID: 8589078Jan 1, 1995Paper

Electron and proton transfer to the quinones in bacterial photosynthetic reaction centers: insight from combined approaches of molecular genetics and biophysics

Biochimie
P SebbanD K Hanson

Abstract

We present here new results together with an overview of the current knowledge on the coupled processes of electron and proton transfer in bacterial reaction centers. The importance of a multidisciplinary approach associating molecular genetics, structural biology, biochemistry and spectroscopy is underlined. We emphasize the electrostatic role of the protein to maintain a negative electrostatic potential near the second quinone electron acceptor in order to: i) accelerate the overall rate of proton transfer from the cytoplasm to this acceptor by increasing the pKs of some groups involved in this process; ii) increase the local proton concentration near this acceptor. We also point out the possibility of long distance propagation of the electrostatic effects through the protein associated with relaxation processes triggered by the formation of the semiquinone anions on the first flash.

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Citations

Apr 25, 2012·Journal of Bioenergetics and Biomembranes·Francesco MilanoLászló Nagy
May 15, 2008·Photosynthesis Research·G Matthias UllmannElisa Bombarda
May 26, 1999·Proceedings of the National Academy of Sciences of the United States of America·M L PaddockM Y Okamura
Mar 4, 2000·Proceedings of the National Academy of Sciences of the United States of America·M L PaddockM Y Okamura
Jan 1, 1997·Annual Review of Physical Chemistry·M Gutman, E Nachliel
Mar 9, 2002·Photochemistry and Photobiology·Julia TandoriPierre Sebban
Dec 10, 1999·Proceedings of the National Academy of Sciences of the United States of America·J MiksovskaP Sebban
Oct 10, 2013·Photosynthesis Research·Melvin Okamura
Oct 29, 2005·Proceedings of the National Academy of Sciences of the United States of America·Hiroshi Ishikita, Ernst-Walter Knapp
Nov 25, 2003·FEBS Letters·M L PaddockM Y Okamura
Jan 22, 2015·Biophysical Journal·László GerencsérPéter Maróti
Aug 6, 2014·Biochimica Et Biophysica Acta·Lucas KresselChristine Kirmaier
Mar 20, 2013·Biochimica Et Biophysica Acta·M R GunnerJianxun Lu
May 17, 2000·Biochimica Et Biophysica Acta·M Y OkamuraG Feher
Dec 15, 2000·Biochimica Et Biophysica Acta·F Rappaport, J Lavergne
May 30, 1998·Biochimica Et Biophysica Acta·H Rottenberg
Jun 22, 2016·FEBS Letters·Nicholas P DyllaPhilip D Laible
Oct 7, 2016·Photosynthesis Research·Tibor SzabóLászló Nagy
Oct 27, 2006·The Journal of Physical Chemistry. B·Marta DorogiLaszló Nagy

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