Literature DB >> 189722

The effect of dibromothymoquinone on respiratory and photosynthetic electron transport in Rhodopseudomonas capsulata chromatophores.

E H Evans, D A Gooding.   

Abstract

Dibromothymoquinone has been shown to inhibit light-induced cytochrome b reduction, and oxidation of succinate and NADH by chromatophores of Rhodopseudomonas capsulata. The half-inhibitory concentration of light-induced reactions and NADH oxidation is 2.5 muM, but of succinate oxidation is 16 muM. Hexane extraction inhibited oxidation of NADH and succinate equally. The results are interpreted to suggest that ubiquinone is concerned in all three processes described, but that the pools associated with NADH and succinate oxidation are not equally accessible to dibromothymoquinone.

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Year:  1976        PMID： 189722     DOI： 10.1007/bf00446565

Source DB:  PubMed          Journal:  Arch Microbiol        ISSN： 0302-8933            Impact factor:   2.552


  14 in total

1.  Dibromothymoquinone : an inhibitor of aerobic electron transport at the level of ubiquinone in Escherichia coli.

Authors:  R K Poole; B A Haddock
Journal:  FEBS Lett       Date:  1975-03-15       Impact factor: 4.124

2.  A thermodynamic characterisation of the cytochromes of chromatophores from Rhodopseudomonas capsulata.

Authors:  E H Evans; A R Crofts
Journal:  Biochim Biophys Acta       Date:  1974-07-25

3.  Identification of ubiquinone as the secondary electron acceptor in the photosynthetic apparatus of Chromatium vinosum.

Authors:  Y D Halsey; W W Parson
Journal:  Biochim Biophys Acta       Date:  1974-06-28

4.  In situ characterisation of photosynthetic electron transport in Rhodopseudomonas capsulata.

Authors:  E H Evans; A R Crofts
Journal:  Biochim Biophys Acta       Date:  1974-07-25

5.  Studies on the mechanism of NAD-photoreduction by chromatophores of the facultative phototroph, Rhodopseudomonas capsulata.

Authors:  J H Klemme
Journal:  Z Naturforsch B       Date:  1969-01       Impact factor: 1.047

6.  Dibromothymoquinone: a new inhibitor of mitochondrial electron transport at the level of ubiquinone.

Authors:  G Loschen; A Azzi
Journal:  FEBS Lett       Date:  1974-04-15       Impact factor: 4.124

7.  The function and localization of ubiquinone in the NADH and succinate oxidase systems of Rhodopseudomonas palustris.

Authors:  M T King; G Drews
Journal:  Biochim Biophys Acta       Date:  1973-05-30

8.  Energy transduction in photosynthetic bacteria. X. Composition and function of the branched oxidase system in wild type and respiration deficient mutants of Rhodopseudomonas capsulata.

Authors:  D Zannoni; B A Melandri; A Baccarini-Melandri
Journal:  Biochim Biophys Acta       Date:  1976-03-12

9.  Photochemical electron transport in photosynthetic reaction centers from Rhodopseudomonas spheroides. I. Kinetics of the oxidation and reduction of P-870 as affected by external factors.

Authors:  R K Clayton; H F Yau
Journal:  Biophys J       Date:  1972-07       Impact factor: 4.033

10.  Photochemical electron transport in photosynthetic reaction centers from Rhodopseudomonas spheroides. II. Interaction with external electron donors and acceptors and a reevaluation of some spectroscopic data.

Authors:  R K Clayton; H Fleming; E Z Szuts
Journal:  Biophys J       Date:  1972-01       Impact factor: 4.033
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  1 in total

1.  A comparison of electron transport and photophosphorylation systems of Rhodopseudomonas capsulata and Rhodospirillum rubrum. Effects of antimycin A and dibromothymoquinone.

Authors:  Z Gromet-Elhanan; H Gest
Journal:  Arch Microbiol       Date:  1978-01-23       Impact factor: 2.552
  1 in total

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