S-sulfocysteine synthase function in sensing chloroplast redox status
نویسندگان
چکیده
منابع مشابه
Arabidopsis S-sulfocysteine synthase activity is essential for chloroplast function and long-day light-dependent redox control.
In bacteria, the biosynthesis of Cys is accomplished by two enzymes that are encoded by the cysK and cysM genes. CysM is also able to use thiosulfate as a substrate to produce S-sulfocysteine. In plant cells, the biosynthesis of Cys occurs in the cytosol, mitochondria, and chloroplasts. Chloroplasts contain two O-acetylserine(thiol)lyase homologs, which are encoded by the OAS-B and CS26 genes i...
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Transduction of light dependent signals to redox sensitive kinases in photosynthetic membranes modulates energy transfer to the photochemical reaction centres and regulates biogenesis, stability and turnover of thylakoid protein complexes. The occupancy of the quinol-oxidation site of the cytochrome bf complex by plastoquinol and the redox state of protein thiol groups act as elements of the si...
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Working in synchrony, photosynthetic charge separation, electron transfer, and redox reactions generate proton motive force necessary for the synthesis of ATP and funneling of electrons toward stromal reducing equivalent NADPH. The last step of electron transfer from ferredoxin to NADP is catalyzed by ferredoxin-NADP oxidoreductase (FNR). Two proteins, TROL (thylakoid rhodanese-like) and Tic62 ...
متن کاملPhotosynthetic Adaptation to Length of Day Is Dependent on S-Sulfocysteine Synthase Activity in the Thylakoid Lumen1[W]
Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas y Universidad de Sevilla, 41092 Seville, Spain (M.Á.B., I.M., C.G., L.C.R.); Grup de Recerca en Biologia de les Plantes en Condicions Mediterrànies, Universitat de les Illes Balears, 07122 Palma, Spain (J.G.); and School of Biological Sciences, University of Essex, Colchester CO4 3SQ, United Kingdom ...
متن کاملPhotosynthetic adaptation to length of day is dependent on S-sulfocysteine synthase activity in the thylakoid lumen.
Arabidopsis (Arabidopsis thaliana) chloroplasts contain two O-acetyl-serine(thiol)lyase (OASTL) homologs, OAS-B, which is an authentic OASTL, and CS26, which has S-sulfocysteine synthase activity. In contrast with OAS-B, the loss of CS26 function resulted in dramatic phenotypic changes, which were dependent on the light treatment. We have performed a detailed characterization of the photosynthe...
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ژورنال
عنوان ژورنال: Plant Signaling & Behavior
سال: 2013
ISSN: 1559-2324
DOI: 10.4161/psb.23313