Electron transfer reactions in photosystem I following vitamin K1 depletion by ultraviolet irradiation
نویسندگان
چکیده
منابع مشابه
Electron transfer in photosystem I.
This mini-review focuses on recent experimental results and questions, which came up since the last more comprehensive reviews on the subject. We include a brief discussion of the different techniques used for time-resolved studies of electron transfer in photosystem I (PS I) and relate the kinetic results to new structural data of the PS I reaction centre.
متن کاملCyclic Electron Transfer Around Photosystem I
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متن کاملDirectionality of electron-transfer reactions in photosystem I of prokaryotes: universality of the bidirectional electron-transfer model.
The electron-transfer (ET) reactions in photosystem I (PS I) of prokaryotes have been investigated in wild-type cells of the cyanobacterium Synechocystis sp. PCC 6803, and in two site-directed mutants in which the methionine residue of the reaction center subunits PsaA and PsaB, which acts as the axial ligand to the primary electron chlorophyll acceptor A(0), was substituted with histidine. Ana...
متن کاملLight-induced dynamics in photosystem I electron transfer.
Protein dynamics are likely to play important, regulatory roles in many aspects of photosynthetic electron transfer, but a detailed description of these coupled protein conformational changes has been unavailable. In oxygenic photosynthesis, photosystem I catalyzes the light-driven oxidation of plastocyanin or cytochrome c and the reduction of ferredoxin. A chlorophyll (chl) a/a' heterodimer, P...
متن کاملDirecting electron transfer within Photosystem I by breaking H-bonds in the cofactor branches.
Photosystem I has two branches of cofactors down which light-driven electron transfer (ET) could potentially proceed, each consisting of a pair of chlorophylls (Chls) and a phylloquinone (PhQ). Forward ET from PhQ to the next ET cofactor (FX) is described by two kinetic components with decay times of approximately 20 and approximately 200 ns, which have been proposed to represent ET from PhQB a...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1989
ISSN: 0014-5793
DOI: 10.1016/0014-5793(89)80736-7