http://publicationslist.org/data/cornelia.spetea/atom.xmlCornelia Spetea's Publications List Cornelia Speteahttp://publicationslist.org/cornelia.spetea$basepathfavicon.icoRecent additions to Cornelia Spetea's PublicationsList.org pagehttp://publicationslist.org/publications.png2008-06-11T21:03:58Z http://publicationslist.org/cornelia.spetea/refid1 2008-06-11T21:03:07Z Arabidopsis ANTR1 Is a Thylakoid Na+-dependent Phosphate Transporter: FUNCTIONAL CHARACTERIZATION IN ESCHERICHIA COLI. In this study, the putative anion transporter 1 (ANTR1) from Arabidopsis thaliana was shown to be localized to the chloroplast thylakoid membrane by Western blotting with two different peptide-specific antibodies. ANTR1 is homologous to the type I of mammalian Na(+)-dependent inorganic phosphate (P(i)) transporters. The function of ANTR1 as a Na(+)-dependent P(i) transporter was demonstrated by he...<br/><br/>Lorena Ruiz Pavón, Fredrik Lundh, Björn Lundin, Arti Mishra, Bengt L Persson, Cornelia Spetea (2008) <i>J Biol Chem</i> <i></i> <i></i> 283: 20 13520-13527<br/> http://publicationslist.org/cornelia.spetea/refid4 2008-06-11T21:03:07Z The Arabidopsis PsbO2 protein regulates dephosphorylation and turnover of the photosystem II reaction centre D1 protein. The extrinsic photosystem II (PSII) protein of 33 kDa (PsbO), which stabilizes the water-oxidizing complex, is represented in Arabidopsis thaliana (Arabidopsis) by two isoforms. Two T-DNA insertion mutant lines deficient in either the PsbO1 or the PsbO2 protein were retarded in growth in comparison with the wild type, while differing from each other phenotypically. Both PsbO proteins were able to ...<br/><br/>Björn Lundin, Maria Hansson, Benoît Schoefs, Alexander V Vener, Cornelia Spetea (2007) <i>Plant J</i> <i></i> <i></i> 49: 3 528-539<br/> http://publicationslist.org/cornelia.spetea/refid3 2008-06-11T21:03:07Z Subsequent events to GTP binding by the plant PsbO protein: structural changes, GTP hydrolysis and dissociation from the photosystem II complex. Besides an essential role in optimizing water oxidation in photosystem II (PSII), it has been reported that the spinach PsbO protein binds GTP [C. Spetea, T. Hundal, B. Lundin, M. Heddad, I. Adamska, B. Andersson, Proc. Natl. Acad. Sci. U.S.A. 101 (2004) 1409-1414]. Here we predict four GTP-binding domains in the structure of spinach PsbO, all localized in the beta-barrel domain of the protein, as...<br/><br/>Björn Lundin, Sophie Thuswaldner, Tatiana Shutova, Said Eshaghi, Göran Samuelsson, James Barber, Bertil Andersson, Cornelia Spetea (2007) <i>Biochim Biophys Acta</i> <i></i> <i></i> 1767: 6 500-508<br/> http://publicationslist.org/cornelia.spetea/refid2 2008-06-11T21:03:07Z Identification, expression, and functional analyses of a thylakoid ATP/ADP carrier from Arabidopsis. In plants the chloroplast thylakoid membrane is the site of light-dependent photosynthetic reactions coupled to ATP synthesis. The ability of the plant cell to build and alter this membrane system is essential for efficient photosynthesis. A nucleotide translocator homologous to the bovine mitochondrial ADP/ATP carrier (AAC) was previously found in spinach thylakoids. Here we have identified and c...<br/><br/>Sophie Thuswaldner, Jens O Lagerstedt, Marc Rojas-Stütz, Karim Bouhidel, Christophe Der, Nathalie Leborgne-Castel, Arti Mishra, Francis Marty, Benoît Schoefs, Iwona Adamska, Bengt L Persson, Cornelia Spetea (2007) <i>J Biol Chem</i> <i></i> <i></i> 282: 12 8848-8859<br/> http://publicationslist.org/cornelia.spetea/refid5 2008-06-11T21:03:07Z Multiple evidence for nucleotide metabolism in the chloroplast thylakoid lumen. The apparatus of photosynthetic energy conversion in chloroplasts is quite well characterized with respect to structure and function. Light-driven electron transport in the thylakoid membrane is coupled to synthesis of ATP, used to drive energy-dependent metabolic processes in the stroma and the outer surface of the thylakoid membrane. The role of the inner (luminal) compartment of the thylakoids ...<br/><br/>Cornelia Spetea, Torill Hundal, Björn Lundin, Mounia Heddad, Iwona Adamska, Bertil Andersson (2004) <i>Proc Natl Acad Sci U S A</i> <i></i> <i></i> 101: 5 1409-1414<br/> http://publicationslist.org/cornelia.spetea/refid6 2008-06-11T21:03:07Z Dissecting a cyanobacterial proteolytic system: efficiency in inducing degradation of the D1 protein of photosystem II in cyanobacteria and plants. A chromatography fraction, prepared from isolated thylakoids of a fatty acid desaturation mutant (Fad6/desA Colon, two colons Km(r)) of the cyanobacterium Synechocystis 6803, could induce an initial cleavage of the D1 protein in Photosystem II (PSII) particles of Synechocystis 6803 mutant and Synechococcus 7002 wild type as well as in supercomplexes of PSII-light harvesting complex II of spinach. ...<br/><br/>Eira Kanervo, Cornelia Spetea, Yoshitaka Nishiyama, Norio Murata, Bertil Andersson, Eva-Mari Aro (2003) <i>Biochim Biophys Acta</i> <i></i> <i></i> 1607: 2-3 131-140<br/> http://publicationslist.org/cornelia.spetea/refid8 2008-06-11T21:03:07Z GTP enhances the degradation of the photosystem II D1 protein irrespective of its conformational heterogeneity at the Q(B) site. The light exposure history and/or binding of different herbicides at the Q(B) site may induce heterogeneity of photosystem II acceptor side conformation that affects D1 protein degradation under photoinhibitory conditions. GTP was recently found to stimulate the D1 protein degradation of photoinactivated photosystem II (Spetea, C. , Hundal, T., Lohmann, F., and Andersson, B. (1999) Proc. Natl. Aca...<br/><br/>C Spetea, N Keren, T Hundal, J M Doan, I Ohad, B Andersson (2000) <i>J Biol Chem</i> <i></i> <i></i> 275: 10 7205-7211<br/> http://publicationslist.org/cornelia.spetea/refid7 2008-06-11T21:03:07Z The thylakoid FtsH protease plays a role in the light-induced turnover of the photosystem II D1 protein. The photosystem II reaction center D1 protein is known to turn over frequently. This protein is prone to irreversible damage caused by reactive oxygen species that are formed in the light; the damaged, nonfunctional D1 protein is degraded and replaced by a new copy. However, the proteases responsible for D1 protein degradation remain unknown. In this study, we investigate the possible role of the ...<br/><br/>M Lindahl, C Spetea, T Hundal, A B Oppenheim, Z Adam, B Andersson (2000) <i>Plant Cell</i> <i></i> <i></i> 12: 3 419-431<br/> http://publicationslist.org/cornelia.spetea/refid9 2008-06-11T21:03:07Z GTP bound to chloroplast thylakoid membranes is required for light-induced, multienzyme degradation of the photosystem II D1 protein. Even though light is the driving force in photosynthesis, it also can be harmful to plants. The water-splitting photosystem II is the main target for this light stress, leading to inactivation of photosynthetic electron transport and photooxidative damage to its reaction center. The plant survives through an intricate repair mechanism involving proteolytic degradation and replacement of the photod...<br/><br/>C Spetea, T Hundal, F Lohmann, B Andersson (1999) <i>Proc Natl Acad Sci U S A</i> <i></i> <i></i> 96: 11 6547-6552<br/> http://publicationslist.org/cornelia.spetea/refid10 2008-06-11T21:03:07Z UV-B-induced inhibition of photosystem II electron transport studied by EPR and chlorophyll fluorescence. Impairment of donor and acceptor side components. Inhibition of photosystem II electron transport by UV-B radiation has been studied in isolated spinach photosystem II membrane particles using low-temperature EPR spectroscopy and chlorophyll fluorescence measurements. UV-B irradiation results in the rapid inhibition of oxygen evolution and the decline of variable chlorophyll fluorescence. These effects are accompanied by the loss of the multiline...<br/><br/>I Vass, L Sass, C Spetea, A Bakou, D F Ghanotakis, V Petrouleas (1996) <i>Biochemistry</i> <i></i> <i></i> 35: 27 8964-8973<br/>