The antimycin‐sensitive electrogenesis in Rhodopseudomonas sphaeroides chromatophores
- 9 March 1987
- journal article
- Published by Wiley in FEBS Letters
- Vol. 213 (1) , 128-132
- https://doi.org/10.1016/0014-5793(87)81477-1
Abstract
Electrogenesis linked to cyclic electron transfer through the ubiquinol‐cytochrome 5c 2 oxidoreductase complex in Rhodopseudomonas sphaeroides chromatophores was investigated by a direct electrometric method. Rapid kinetic measurements of laser flash‐induced ΔΨ generated in chromatophores associated with a phospholipid‐impregnated collodion film revealed an exponential rise ofΔΨ with a τ of ~ 700 μs. This exponential electrogenic phase contributes about 11% of the total photoelectric response and is sensitive to antimycin.Keywords
This publication has 9 references indexed in Scilit:
- The role of the quinone pool in the cyclic electron-transfer chain of Rhodopseudomonas sphaeroides A modified Q-cycle mechanismPublished by Elsevier ,2003
- Electrogenic reduction of the secondary quinone acceptor in chromatophores of Rhodospirillum rubrumFEBS Letters, 1986
- Effects of electron donors and acceptors on the kinetics of the photoelectric responses in Rhodospirillum rubrum and Rhodopseudomonas sphaeroides chromatophoresBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1986
- A new electrogenic step in the ubiquinol: Cytochrome c2 oxidoreductase complex of Rhodopseudomonas sphaeroidesBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1984
- [7] A single turnover study of photoelectric current-generating proteinsPublished by Elsevier ,1982
- Fast Stages of Photoelectric Processes in Biological MembranesEuropean Journal of Biochemistry, 1981
- Generation of electric current by chromatophores of Rhodospirillum rubrum and reconstitution of electrogenic function in subchromatophore pigment-protein complexesBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1976
- The kinetic and redox potentiometric resolution of the carotenoid shifts in Rhodopseudomonas spheroides chromatophores: Their relationship to electric field alterations in electron transport and energy couplingBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1973
- The Kinetics of Light Induced Carotenoid Changes in Rhodopseudomonas spheroides and their Relation to Electrical Field Generation across the Chromatophore MembraneEuropean Journal of Biochemistry, 1971