Journal ArticleDOI
The redox state of cytochrome b559 in spinach chloroplasts
TLDR
Spinach chloroplasts suspended in a mixture of redox buffers were titrated under anaerobic conditions by adding small amounts of oxidant (potassium ferricyanide) or reductant (reduced methyl viologen) to determine the extent of the low temperature light-induced reduction of C-550 and oxidation of cytochrome b 559.About:
This article is published in Biochimica et Biophysica Acta.The article was published on 1972-05-25. It has received 47 citations till now. The article focuses on the topics: Cytochrome b559 & Redox.read more
Citations
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Journal ArticleDOI
Changes in electrophoretic mobility of a chloroplast membrane polypeptide associated with the loss of the oxidizing side of photosystem II in low fluorescent mutants of Scenedesmus
TL;DR: It is demonstrated that specific low fluorescent yield, non-photosynthetic mutants of the green alga, Scenedesmus obliquus Da, which lack photolysis ability are demonstrated.
Journal ArticleDOI
Cytochrome b559 and cyclic electron transfer within photosystem II
TL;DR: The discovery of the secondary electron donors, their structures and electron-transfer properties, and progress in the characterization of the primary electron-donation pathways are discussed are discussed.
Journal ArticleDOI
Q400, the non-heme iron of the photosystem II iron-quinone complex. A spectroscopic probe of quinone and inhibitor binding to the reaction center
Bruce A. Diner,Vasili Petrouleas +1 more
TL;DR: In this article, a high-potential electron acceptor associated with Photosystem II (PS II) of oxygenic photosynthesis, originally described by Ikegami and Katoh [3], has recently been identified by Petrouleas and Diner [8] as the non-heme iron of the iron-quinone complex of the PS II reaction center.
References
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Journal ArticleDOI
Cooperation of charges in photosynthetic o2 evolution–i. a linear four step mechanism
TL;DR: The evolution of O2 in weak light and light flashes is studied to analyze the interactions between light induced O2 precursors and their decay in darkness and the data are compatible with a linear four step mechanism in which a trapping center successively accumulates four + charges.
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Photoreduction and photophosphorylation with tris-washed chloroplasts.
TL;DR: Experiments with the tris-washed chloroplasts indicated that electron donors preferentially donate electrons to photosystem II but in the presence of DCMU the donors (with the exception of PD at low concentrations) could also supply electrons after the DCMU block.
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The relationship between Q, C-550 and cytochrome b 559 in photoreactions at −196° in chloroplasts
K. Erixon,Warren L. Butler +1 more
TL;DR: In this article, the authors measured the redox potential of the chloroplast suspension of spinach chloroplasts with red light at −196° and showed that the titration curves for all three changes were essentially the same and showed the same midpoint potential.
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The plastocyanin content of chloroplasts from some higher plants estimated by a sensitive enzymatic assay.
TL;DR: It is concluded that plastocyanin is likely to be the only copper compound involved in photosynthetic electron transport.
Journal ArticleDOI
Light-induced absorbance changes of two cytochrome b components in the electron-transport system of spinach chloroplasts.
W.A. Cramer,Warren L. Butler +1 more
TL;DR: It is concluded that cytochrome b-563 is reduced by Photosystem 1 and that cy to chrome b-560 is in the electron transport chain between Photosystems 1 and 2.
Related Papers (5)
High and low potential states of the chloroplast cytochrome b-559 and thermodynamic control of non-cyclic electron transport.
Light-induced absorbance changes of two cytochrome b components in the electron-transport system of spinach chloroplasts.
W.A. Cramer,Warren L. Butler +1 more