SHAHAK, Y and KLUGHAMMER, C and SCHREIBER, U and PADAN, E and HERRMAN, I and HAUSKA, G (1994) SULFIDE-QUINONE AND SULFIDE-CYTOCHROME REDUCTION IN RHODOBACTER-CAPSULATUS. PHOTOSYNTHESIS RESEARCH, 39 (2). pp. 175-181. ISSN 0166-8595,
Full text not available from this repository.Abstract
The reduction by sulfide of exogenous ubiquinone is compared to the reduction of cytochromes in chromatophores of Rhodobacter capsulatus. From titrations with sulfide values for V-max of 300 and 10 mu moles reduced/mg bacteriochlorophyll a h,bacteriochlorophyll a.h, and for K, of 5 and 3 mu M were estimated, for decyl-ubiquinone- and cytochrome c-reduction, respectively. Both reactions are sensitive to KCN, as has been found for sulfide-quinone reductase (SQR) in Oscillatoria limnetica, which is a flavoprotein. Effects of inhibitors interfering with quinone binding sites suggest that at least part of the electron transport from sulfide in R. capsulatus employs the cytochrome bc(1)-complex via the ubiquinone pool.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OSCILLATORIA-LIMNETICA; THYLAKOIDS; CHLOROBIUM; INHIBITORS; OXIDATION; BACTERIA; SULFIDE-QUINONE REDUCTASE (SQR); OSCILLATORIA LIMNETICA; CHLOROBIUM LIMICOLA; ELECTRON TRANSPORT; LED ARRAY SPECTROPHOTOMETER; ANOXYGENIC PHOTOSYNTHESIS |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:41 |
| URI: | https://pred.uni-regensburg.de/id/eprint/53493 |
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