Cytochrome b 6 from isolated cytochrome b 6 f complexes
نویسندگان
چکیده
منابع مشابه
Inhibition of electron transport at the cytochrome b(6)f complex protects photosystem II from photoinhibition.
Photoinhibition of photosystem II (PS II) activity was studied in thylakoid membranes illuminated in the presence of the inhibitor of the cytochrome b(6)f complex 2'iodo-6-isopropyl-3-methyl-2',4, 4'-trinitrodiphenylether (DNP-INT). DNP-INT was found to decrease photoinhibition. In the absence of DNP-INT, anaerobosis, superoxide dismutase and catalase protected against photoinhibition. No effec...
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Electron crystallography of the chloroplastic b(6)f complex allowed the calculation of projection maps of crystals negatively stained or embedded in glucose. This gives insights into the overall structure of the extra- and transmembrane domains of the complex. A comparison with the structure of the bc(1) complex, the mitochondrial homologue of the b(6)f complex, suggests that the transmembrane ...
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Changes in the amount of P700-chlorophyll a protein complex, plastocyanin, and cytochrome b(6)/f complex during greening of pea (Pisum sativum L.), wheat (Triticum aestivum L.), and barley (Hordeum vulgare L.) leaves were analyzed by an immunochemical quantification method. Neither subunit I nor II of P700-chlorophyll a protein complex could be detected in the etiolated seedlings of all three p...
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The kinetics and amplitude of the membrane potential changes associated with electron and proton transfers within the cytochrome b(6)/f (cyt b/f) complex (phase b) are measured in vivo in Chlamydomonas reinhardtii under anaerobic conditions. Upon saturating flash excitation, fast components in the membrane potential decay superimposed on phase b lead to an underestimation of the amplitude of th...
متن کاملStigmatellin Affects Both Hemes of Cytochrome b in Cytochrome b 6f/bc 1-Complexes
The antibiotic stigmatellin was purified from the gliding bacterium Stigmatella aurantiaca [1] and its inhibition of the mitochondrial cytochrome bcl-com plex was characterized in detail [2—4]. Stigmatellin was found to affect the mitochondrial cytochrome bc7-complex at the ubiquinol oxidation site (Q nsite), shifting the a-peak of cytochrome b to the red and raising the redox potential of the ...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1983
ISSN: 0014-5793
DOI: 10.1016/0014-5793(83)80655-3