Literature DB >> 19400037

The absolute quantum efficiency of bacteriochlorophyll photooxidation in reaction centres of Rhodopseudomonas spheroides.

C A Wraight1, R K Clayton.   

Abstract

The widely assumed correspondence between fluorescence and photochemistry in photosynthetic systems has recently been challenged by observations on the triplet state of bacteriochlorophyll in reaction centres of Rhodopseudomonas spheroides. In order to check this assumption we have conducted a precise determination of the quantum efficiency of bacteriochlorophyll photooxidation in reaction centres at room temperature. We find a quantum efficiency of 1.02 +/- 0.04 in contrast to a value of about 0.7 predicted from the variations in fluorescence yield.

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Year:  1974        PMID: 19400037     DOI: 10.1016/0005-2728(74)90009-7

Source DB:  PubMed          Journal:  Biochim Biophys Acta        ISSN: 0006-3002


  40 in total

1.  Characterization of a symmetrized mutant RC with 42 residues from the QA site replacing residues in the Q(B) site.

Authors:  J Li; W J Coleman; D C Youvan; M R Gunner
Journal:  Photosynth Res       Date:  2000       Impact factor: 3.573

2.  Research on photosynthetic reaction centers from 1932 to 1987.

Authors:  Roderick K Clayton
Journal:  Photosynth Res       Date:  2002       Impact factor: 3.573

3.  Time line of discoveries: anoxygenic bacterial photosynthesis.

Authors:  Howard Gest; Robert E Blankenship
Journal:  Photosynth Res       Date:  2004       Impact factor: 3.573

4.  Charge stabilization in reaction center protein investigated by optical heterodyne detected transient grating spectroscopy.

Authors:  Hiroko Ohmori; László Nagy; Márta Dorogi; Masahide Terazima
Journal:  Eur Biophys J       Date:  2008-03-11       Impact factor: 1.733

5.  Kinetics and yields of bacteriochlorophyll fluorescence: redox and conformation changes in reaction center of Rhodobacter sphaeroides.

Authors:  Péter Maróti
Journal:  Eur Biophys J       Date:  2008-03-20       Impact factor: 1.733

6.  Light induced EPR spectra of reaction centers from Rhodobacter sphaeroides at 80K: Evidence for reduction of Q(B) by B-branch electron transfer in native reaction centers.

Authors:  M L Paddock; R A Isaacson; E C Abresch; M Y Okamura
Journal:  Appl Magn Reson       Date:  2007       Impact factor: 0.831

7.  Triplet state EPR of reaction centers from the His(L173)→Leu (L173) mutant of Rhodobacter sphaeroides which contains a heterodimer primary donor.

Authors:  H A Frank; J Innes; M Aldema; R Neumann; C C Schenck
Journal:  Photosynth Res       Date:  1993-10       Impact factor: 3.573

8.  Roderick K. Clayton: a life, and some personal recollections.

Authors:  Colin A Wraight
Journal:  Photosynth Res       Date:  2013-11-20       Impact factor: 3.573

9.  Electron transfer in reaction centers of Rhodobacter sphaeroides and Rhodobacter capsulatus monitored by fluorescence of the bacteriochlorophyll dimer.

Authors:  S Osváth; G Laczkó; P Sebban; P Maróti
Journal:  Photosynth Res       Date:  1996-01       Impact factor: 3.573

10.  Colin A. Wraight, 1945-2014.

Authors:  Roger C Prince; Donald R Ort
Journal:  Photosynth Res       Date:  2015-07-23       Impact factor: 3.573

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