photosystem i protein complex

Summary

Summary: A large multisubunit protein complex that is found in the THYLAKOID MEMBRANE. It uses light energy derived from LIGHT-HARVESTING PROTEIN COMPLEXES to drive electron transfer reactions that result in either the reduction of NADP to NADPH or the transport of PROTONS across the membrane.

Top Publications

  1. ncbi Photoinhibition of photosystem I
    Henrik Vibe Scheller
    Plant Biochemistry Laboratory, Department of Plant Biology, The Royal Veterinary and Agricultural University, 40 Thorvaldsensvej, 1871, Frederiksberg C, Copenhagen, Denmark
    Planta 221:5-8. 2005
  2. pmc Functional analyses of the plant photosystem I-light-harvesting complex II supercomplex reveal that light-harvesting complex II loosely bound to photosystem II is a very efficient antenna for photosystem I in state II
    Pierre Galka
    Aix Marseille Universite, Biologie Végétale et Microbiologie Environementales, Laboratoire de Genetique et Biophysique des Plantes, 13288 Marseille, France
    Plant Cell 24:2963-78. 2012
  3. ncbi Chlororespiration and cyclic electron flow around PSI during photosynthesis and plant stress response
    Dominique Rumeau
    Laboratoire d Ecophysiologie Moléculaire des Plantes, CEA Cadarache, DSV, IBEB, SBVME, UMR 6191 CNRS CEA Université Aix Marseilles, Saint Paul lez Durance F 13108, France
    Plant Cell Environ 30:1041-51. 2007
  4. ncbi Isolation of the elusive supercomplex that drives cyclic electron flow in photosynthesis
    Masakazu Iwai
    Institute of Low Temperature Science, Hokkaido University, Sapporo 060 0819, Japan
    Nature 464:1210-3. 2010
  5. pmc The role of Lhca complexes in the supramolecular organization of higher plant photosystem I
    Emilie Wientjes
    Department of Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
    J Biol Chem 284:7803-10. 2009
  6. ncbi The light-harvesting complexes of higher-plant Photosystem I: Lhca1/4 and Lhca2/3 form two red-emitting heterodimers
    Emilie Wientjes
    Department of Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, The Netherlands
    Biochem J 433:477-85. 2011
  7. ncbi Cyclic electron flow around photosystem I is essential for photosynthesis
    Yuri Munekage
    Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara 630 0101, Japan
    Nature 429:579-82. 2004
  8. pmc Structure determination and improved model of plant photosystem I
    Alexey Amunts
    Biochemistry Department, George S Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
    J Biol Chem 285:3478-86. 2010
  9. ncbi State transitions--the molecular remodeling of photosynthetic supercomplexes that controls energy flow in the chloroplast
    Jun Minagawa
    Nattional Institute for Basic Biology, Okazaki, Japan
    Biochim Biophys Acta 1807:897-905. 2011
  10. ncbi Lhca5--an LHC-type protein associated with photosystem I
    Ulrika Ganeteg
    Umea Plant Science Centre, Department of Plant Physiology, Umea University, S 901 87 Umea, Sweden
    Plant Mol Biol 54:641-51. 2004

Research Grants

  1. Femtosecond nano-crystallography of membrane proteins
    Petra Fromme; Fiscal Year: 2013
  2. DISTANCE MEASUREMENTS IN METALLOPROTEINS
    GARY BRUDVIG; Fiscal Year: 2002
  3. STRUCTURE AND ORGANIZATION OF THE PHOTOSYSTEM I COMPLEX
    Parag Chitnis; Fiscal Year: 1999
  4. ASSEMBLY OF CAB POLYPEPTIDES
    Neil Hoffman; Fiscal Year: 1993
  5. 250/500 GHZ GYROTRON BASED DNP/EPR SPECTROMETER
    RICHARD TEMKIN; Fiscal Year: 2003
  6. 250/500 GHZ GYROTRON BASED DNP/EPR SPECTROMETER
    RICHARD TEMKIN; Fiscal Year: 2002
  7. CHARACTERIZATION OF MEMBRANE PROTEIN COMPLEXES
    L Staehelin; Fiscal Year: 1993
  8. USE OF MUTANTS TO STUDY CYANOBACTERIAL MEMBRANE PROTEINS
    HIMADRI PAKRASI; Fiscal Year: 1993
  9. Disassembly and degradation of Photosystem I
    Kevin Redding; Fiscal Year: 2005
  10. Supercritical Fluid Extraction for Membrane Proteomics
    Lloyd Smith; Fiscal Year: 2006

Detail Information

Publications340 found, 100 shown here

  1. ncbi Photoinhibition of photosystem I
    Henrik Vibe Scheller
    Plant Biochemistry Laboratory, Department of Plant Biology, The Royal Veterinary and Agricultural University, 40 Thorvaldsensvej, 1871, Frederiksberg C, Copenhagen, Denmark
    Planta 221:5-8. 2005
  2. pmc Functional analyses of the plant photosystem I-light-harvesting complex II supercomplex reveal that light-harvesting complex II loosely bound to photosystem II is a very efficient antenna for photosystem I in state II
    Pierre Galka
    Aix Marseille Universite, Biologie Végétale et Microbiologie Environementales, Laboratoire de Genetique et Biophysique des Plantes, 13288 Marseille, France
    Plant Cell 24:2963-78. 2012
    ..In contrast with the common opinion, we suggest that the mobile pool of LHCII may be considered an intimate part of the PSI antenna system that is displaced to PSII in State I...
  3. ncbi Chlororespiration and cyclic electron flow around PSI during photosynthesis and plant stress response
    Dominique Rumeau
    Laboratoire d Ecophysiologie Moléculaire des Plantes, CEA Cadarache, DSV, IBEB, SBVME, UMR 6191 CNRS CEA Université Aix Marseilles, Saint Paul lez Durance F 13108, France
    Plant Cell Environ 30:1041-51. 2007
    ..In response to severe stress conditions, PTOX associated to the NDH and/or the PGR5 pathway may also limit electron pressure on PSI acceptor and prevent PSI photoinhibition...
  4. ncbi Isolation of the elusive supercomplex that drives cyclic electron flow in photosynthesis
    Masakazu Iwai
    Institute of Low Temperature Science, Hokkaido University, Sapporo 060 0819, Japan
    Nature 464:1210-3. 2010
    ..1). Thus, formation and dissociation of the PSI-LHCI-LHCII-FNR-Cyt bf-PGRL1 supercomplex not only controlled the energy balance of the two photosystems, but also switched the mode of photosynthetic electron flow...
  5. pmc The role of Lhca complexes in the supramolecular organization of higher plant photosystem I
    Emilie Wientjes
    Department of Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
    J Biol Chem 284:7803-10. 2009
    ..There is, however, an exception to the rule: Lhca5 can substitute for Lhca4, yielding highly stable PSI supercomplexes with a supramolecular organization identical to the WT...
  6. ncbi The light-harvesting complexes of higher-plant Photosystem I: Lhca1/4 and Lhca2/3 form two red-emitting heterodimers
    Emilie Wientjes
    Department of Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, The Netherlands
    Biochem J 433:477-85. 2011
    ..Finally, the comparison of the properties of the native dimers with those of the reconstituted complexes demonstrates that all of the major properties of the Lhcas are reproduced in the in vitro systems...
  7. ncbi Cyclic electron flow around photosystem I is essential for photosynthesis
    Yuri Munekage
    Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara 630 0101, Japan
    Nature 429:579-82. 2004
    ..Here we have constructed mutants in Arabidopsis thaliana in which both PSI cyclic pathways are impaired, and present evidence that cyclic flow is essential for efficient photosynthesis...
  8. pmc Structure determination and improved model of plant photosystem I
    Alexey Amunts
    Biochemistry Department, George S Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
    J Biol Chem 285:3478-86. 2010
    ..Using the new crystal structure, we examine the network of contacts among the protein subunits from the structural perspective, which provide the basis for elucidating the functional organization of the complex...
  9. ncbi State transitions--the molecular remodeling of photosynthetic supercomplexes that controls energy flow in the chloroplast
    Jun Minagawa
    Nattional Institute for Basic Biology, Okazaki, Japan
    Biochim Biophys Acta 1807:897-905. 2011
    ..This article is part of a Special Issue entitled: Regulation of Electron Transport in Chloroplasts...
  10. ncbi Lhca5--an LHC-type protein associated with photosystem I
    Ulrika Ganeteg
    Umea Plant Science Centre, Department of Plant Physiology, Umea University, S 901 87 Umea, Sweden
    Plant Mol Biol 54:641-51. 2004
    ..We propose that Lhca5 binds chlorophylls in a similar fashion to the other Lhca proteins and is associated with PSI only in sub-stoichiometric amounts...
  11. ncbi Light-harvesting complex II binds to several small subunits of photosystem I
    Suping Zhang
    Plant Biochemistry Laboratory, Department of Plant Biology, The Royal Veterinary and Agricultural University, 40 Thorvaldsensvej, Frederiksberg C DK 1871, Denmark
    J Biol Chem 279:3180-7. 2004
    ....
  12. ncbi Desiccation of the resurrection plant Haberlea rhodopensis at high temperature
    Gergana Mihailova
    Acad M Popov Institute of Plant Physiology, Bulgarian Academy of Sciences, Acad G Bonchev Str, Bl 21, 1113, Sofia, Bulgaria
    Photosynth Res 108:5-13. 2011
    ..Increased thermal energy dissipation together with higher proline and carotenoid content in the course of desiccation at 38°C compared to desiccation at 23°C probably helped in overcoming the stress...
  13. ncbi The structure and function of eukaryotic photosystem I
    Andreas Busch
    Department of Plant Biology and Biotechnology, Faculty of Life Sciences, University of Copenhagen, Thorvaldsensvej 40, DK 1871 Frederiksberg C, Denmark
    Biochim Biophys Acta 1807:864-77. 2011
    ..This article is part of a Special Issue entitled: Regulation of Electron Transport in Chloroplasts...
  14. ncbi LHCII is an antenna of both photosystems after long-term acclimation
    Emilie Wientjes
    Department of Physics and Astronomy, VU University Amsterdam, 1081 HV Amsterdam, The Netherlands
    Biochim Biophys Acta 1827:420-6. 2013
    ..Finally, time-resolved fluorescence measurements on the photosynthetic thylakoid membranes show that LHCII is even a more efficient light harvester when associated with Photosystem I than with Photosystem II...
  15. pmc Arabidopsis mutants deleted in the light-harvesting protein Lhcb4 have a disrupted photosystem II macrostructure and are defective in photoprotection
    Silvia de Bianchi
    Dipartimento di Biotecnologie, Universita di Verona, 37134 Verona, Italy
    Plant Cell 23:2659-79. 2011
    ..This suggests that Lhcb4 is unique among photosystem II antenna proteins and determinant for photosystem II macro-organization and photoprotection...
  16. ncbi Daddy, where did (PS)I come from?
    F Baymann
    Laboratoire de Bioenergetique et Ingenierie des Proteines, Institut de Biologie Structurale et Microbiologie, Marseille, France
    Biochim Biophys Acta 1507:291-310. 2001
    ..An evolutionary model trying to rationalise available data is presented...
  17. ncbi Revealing the structure of the photosystem II chlorophyll binding proteins, CP43 and CP47
    J Barber
    Biochemistry Department, Wolfson Laboratories, Imperial College of Science, Technology and Medicine, SW7 2AY, London, UK
    Biochim Biophys Acta 1459:239-47. 2000
    ..Improved structural resolution and reconsiderations of the orientation of the porphyrin rings will allow further refinement of the model...
  18. ncbi Cyclic electron flow around photosystem I in unicellular green algae
    Jean Alric
    UMR 7141, CNRS et Université Pierre et Marie Curie Paris VI, Institut de Biologie Physico Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France
    Photosynth Res 106:47-56. 2010
    ..These ultrastructural changes have been proposed to further enhance cyclic electron flow by increasing PSI antenna size, and forming PSI-cyt b(6)f supercomplexes. These hypotheses are discussed in light of recently published data...
  19. pmc Energy transfer in photosystem I of cyanobacteria Synechococcus elongatus: model study with structure-based semi-empirical Hamiltonian and experimental spectral density
    Mino Yang
    Department of Chemistry, University of California, Berkeley, California, USA
    Biophys J 85:140-58. 2003
    ..The intrinsic charge transfer time is estimated to be 0.8 approximately 1.7 ps. The optimality with respect to the trapping time of the calculated transition energies and the orientation of Chls is discussed...
  20. pmc Photosystem I of Chlamydomonas reinhardtii contains nine light-harvesting complexes (Lhca) located on one side of the core
    Bartlomiej Drop
    Department of Biophysical Chemistry, Groningen Biological Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
    J Biol Chem 286:44878-87. 2011
    ..The analysis of several subcomplexes with reduced antenna size allows determination of the position of Lhca2 and Lhca9 and leads to a proposal for a model of the organization of the Lhcas within the PSI-LHCI supercomplex...
  21. ncbi Quenching of chlorophyll triplet states by carotenoids in reconstituted Lhca4 subunit of peripheral light-harvesting complex of photosystem I
    Donatella Carbonera
    Dipartimento di Scienze Chimiche, Universita di Padova, Via Marzolo 1, 35131 Padova, Italy
    Biochemistry 44:8337-46. 2005
    ..Lack of the red forms yields into a reduced efficiency of the triplet quenching in LHC-I thus suggesting that the "red Chls" play a role in enhancing triplet quenching in LHC-I and, possibly, in the whole photosystem I...
  22. pmc Live-cell imaging of photosystem II antenna dissociation during state transitions
    Masakazu Iwai
    Institute of Low Temperature Science, Hokkaido University, N19 W8, Sapporo, Hokkaido 060 0819, Japan
    Proc Natl Acad Sci U S A 107:2337-42. 2010
    ..Possible implications of the unbound phospho-LHCII on energy dissipation are discussed...
  23. pmc The water-water cycle as alternative photon and electron sinks
    K Asada
    Department of Biotechnology, Faculty of Engineering, Fukuyama University, Japan
    Philos Trans R Soc Lond B Biol Sci 355:1419-31. 2000
    ..The dual functions of the water-water cycle for protection from photoinhibition under photon excess stress are discussed, along with its functional evolution...
  24. ncbi Evolutionary biology: out of thin air
    John F Allen
    Nature 445:610-2. 2007
  25. ncbi Irreversible damage to photosystem I by chilling in the light: cause of the degradation of chlorophyll after returning to normal growth temperature
    Hideki Kudoh
    Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Bldg FSB Box 101, Kashiwanoha 5 1 5, Kashiwa shi, Chiba 277 8562, Japan
    Planta 215:541-8. 2002
    ..e. irreversibility of the injury and development of visible symptoms at room temperature, can be explained as a consequence of the chilling-induced photoinhibition of PSI...
  26. ncbi Structure and function of photosystems I and II
    Nathan Nelson
    Department of Biochemistry, George S Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
    Annu Rev Plant Biol 57:521-65. 2006
    ....
  27. ncbi Dynamics of reversible protein phosphorylation in thylakoids of flowering plants: the roles of STN7, STN8 and TAP38
    Paolo Pesaresi
    Dipartimento di Scienze Biomolecolari e Biotecnologie, Universita degli Studi di Milano, I 20133 Milano, Italy
    Biochim Biophys Acta 1807:887-96. 2011
    ..This article is part of a Special Issue entitled: Regulation of Electron Transport in Chloroplasts...
  28. ncbi Structural characterization of a complex of photosystem I and light-harvesting complex II of Arabidopsis thaliana
    Roman Kouril
    Department of Biophysical Chemistry, GBB, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
    Biochemistry 44:10935-40. 2005
    ..The PSI-LHCII complex could be averaged with a resolution of 16 A, showing that LHCII has a specific binding site at the PSI-A, -H, -L, and -K subunits...
  29. ncbi Molecular recognition in thylakoid structure and function
    J F Allen
    Plant Biochemistry, Lund University, Box 117, SE 221 00, Lund, Sweden
    Trends Plant Sci 6:317-26. 2001
    ..High-resolution structural description of membrane protein-protein interactions is now required to understand thylakoid structure and regulation of photosynthesis...
  30. ncbi Effects of iron limitation on the expression of metabolic genes in the marine cyanobacterium Trichodesmium erythraeum IMS101
    Tuo Shi
    Environmental Biophysics and Molecular Ecology Program, Institute of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ 08901, USA
    Environ Microbiol 9:2945-56. 2007
    ..The observed functional and compositional alterations represent the compromises in gene expression and acclimation capacity between two basic metabolic pathways competing for iron when it is limiting...
  31. pmc The high light-inducible polypeptides stabilize trimeric photosystem I complex under high light conditions in Synechocystis PCC 6803
    Qiang Wang
    Department of Applied Science, University of Arkansas, Little Rock, Arkansas 72204, USA
    Plant Physiol 147:1239-50. 2008
    ..These results suggest that the HLIPs stabilize PSI trimers, interact with Slr1128, and protect cells under HL conditions...
  32. pmc Bridging the gap between structural and lattice models: a parameterization of energy transfer and trapping in Photosystem I
    Bas Gobets
    Division of Physics and Astronomy of the Faculty of Exact Sciences and Institute of Molecular Biological Sciences, Vrije Universiteit, Amsterdam, The Netherlands
    Biophys J 85:3872-82. 2003
    ....
  33. ncbi Electron flow between photosystem II and oxygen in chloroplasts of photosystem I-deficient algae is mediated by a quinol oxidase involved in chlororespiration
    L Cournac
    Commissariat à l Energie Atomique CEA Cadarache, Départment d Ecophysiologie Végétale et de Microbiologie DEVM, laboratoire d écophysiologie de la photosynthèse, 13108 Saint Paul Lez Durance, France
    J Biol Chem 275:17256-62. 2000
    ..Clues to the identity of the protein implied in this process are given by pharmacological and immunological similarities with a protein (IMMUTANS) identified in Arabidopsis chloroplasts...
  34. pmc Cyclic electron flow around photosystem I in C(3) plants. In vivo control by the redox state of chloroplasts and involvement of the NADH-dehydrogenase complex
    Thierry Joet
    Commissariat à l Energie Atomique Cadarache, Département d Ecophysiologie Végétale et de Microbiologie, Unité Mixte de Recherche 163 Centre National de la Recherche Scientifique, F 13108 Saint Paul lez Durance, France
    Plant Physiol 128:760-9. 2002
    ..We conclude that the Ndh complex is required for rapid electron cycling around PS I...
  35. ncbi Role of subunits in eukaryotic Photosystem I
    H V Scheller
    Plant Biochemistry Laboratory, Department of Plant Biology, The Royal Veterinary and Agricultural University, 40 Thorvaldsensvej, DK 1871 Frederiksberg C, Copenhagen, Denmark
    Biochim Biophys Acta 1507:41-60. 2001
    ..The review describes the role of the different subunits in eukaryotic PSI. The emphasis is on features that are different from cyanobacterial PSI...
  36. ncbi Pigment binding of photosystem I light-harvesting proteins
    Volkmar H R Schmid
    Institut fur Allgemeine Botanik, Johannes Gutenberg Universitat, Müllerweg 6, 55099 Mainz, Germany
    J Biol Chem 277:37307-14. 2002
    ..It is suggested that excitation energy migrates from chlorophyll(s) fluorescing at 680 (Lhca3) via those fluorescing at 686/702 nm (Lhca2) or 720 nm (Lhca3) to the photosystem I core chlorophylls...
  37. ncbi Plastocyanin is indispensable for photosynthetic electron flow in Arabidopsis thaliana
    Martin Weigel
    Abteilung für Pflanzenzüchtung und Ertragsphysiologie, Max Planck Institut fur Zuchtungsforschung, Carl von Linne Weg 10, D 50829 Köln, Germany
    J Biol Chem 278:31286-9. 2003
    ..Even increased dosage of the gene encoding the cytochrome c6-like protein cannot complement the double mutant phenotype. This demonstrates that in Arabidopsis only plastocyanin can donate electrons to photosystem I in vivo...
  38. ncbi Influence of the photosystem I-light harvesting complex I antenna domains on fluorescence decay
    Enrico Engelmann
    Istituto di Biofisica del Consiglio Nazionale delle Ricerche Sezione di Milano, Dipartimento di Biologia, Universita degli Studi di Milano, Via Celoria, 26, 20133 Milano, Italy
    Biochemistry 45:6947-55. 2006
    ....
  39. ncbi Three-dimensional structure of cyanobacterial photosystem I at 2.5 A resolution
    P Jordan
    Institut für Chemie Kristallographie, Freie Universitat Berlin, D 14195 Berlin, Takustrasse 6, Germany
    Nature 411:909-17. 2001
    ..The structural information on the proteins and cofactors and their interactions provides a basis for understanding how the high efficiency of photosystem I in light capturing and electron transfer is achieved...
  40. ncbi Genetic analysis of the Photosystem I subunits from the red alga, Galdieria sulphuraria
    Christopher Vanselow
    Department of Chemistry and Biochemistry, Arizona State University, Tempe 85287 1604, AZ, USA
    Biochim Biophys Acta 1787:46-59. 2009
    ....
  41. pmc The role of the individual Lhcas in photosystem I excitation energy trapping
    Emilie Wientjes
    Department of Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen, The Netherlands
    Biophys J 101:745-54. 2011
    ..Combining all the data allows the construction of a comprehensive picture of the excitation-energy transfer routes and rates in Photosystem I...
  42. pmc Excess manganese differentially inhibits photosystem I versus II in Arabidopsis thaliana
    R Millaleo
    Programa de Doctorado en Ciencias de Recursos Naturales, Universidad de La Frontera, Temuco, Chile
    J Exp Bot 64:343-54. 2013
    ..The possible involvement mechanisms of Mn toxicity targeting specifically PSI are discussed...
  43. pmc Conformational switching explains the intrinsic multifunctionality of plant light-harvesting complexes
    Tjaart P J Krüger
    Department of Physics and Astronomy, Faculty of Sciences, Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
    Proc Natl Acad Sci U S A 108:13516-21. 2011
    ..We propose that this functionality is modulated and controlled by the protein environment...
  44. ncbi Pigment binding, fluorescence properties, and oligomerization behavior of Lhca5, a novel light-harvesting protein
    Stefanie Storf
    Institut fur Allgemeine Botanik, Johannes Gutenberg Universitat Mainz, Müllerweg 6, 55099 Mainz, Germany
    J Biol Chem 280:5163-8. 2005
    ....
  45. ncbi Photosystem I gene cassettes are present in marine virus genomes
    Itai Sharon
    Faculty of Biology, Technion Israel Institute of Technology, Haifa 32000, Israel
    Nature 461:258-62. 2009
    ....
  46. ncbi Excitation energy trapping in photosystem I complexes depleted in Lhca1 and Lhca4
    Janne A Ihalainen
    Vrije Universiteit Amsterdam, Department of Physics and Astronomy, Biophysics, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
    FEBS Lett 579:4787-91. 2005
    ..We suggest that the specific location of each Lhca protein within the PSI-LHCI supercomplex is more important than the presence of so-called red chlorophylls in the Lhca proteins...
  47. ncbi Photo-induced electron transfer from photosystem I to NADP(+): characterization and tentative simulation of the in vivo environment
    Gwenaëlle Moal
    Service de Bioenergetique, Biologie Structurale et Mecanismes, Gif sur Yvette, France
    Biochim Biophys Acta 1817:1635-45. 2012
    ..This organization seems well adapted for an efficient in vivo production of the stable and fast diffusing NADPH...
  48. ncbi The IP amplitude of the fluorescence rise OJIP is sensitive to changes in the photosystem I content of leaves: a study on plants exposed to magnesium and sulfate deficiencies, drought stress and salt stress
    Margarita Georgina Ceppi
    Laboratories of Bioenergetics and Microbiology, Department of Botany and Plant Biology, University of Geneva, CH 1254 Jussy, Geneva, Switzerland
    Physiol Plant 144:277-88. 2012
    ..The good correlations between ΔI(max) /I(tot) and ΔF(IP) and ΔV(IP) , respectively, suggest that changes in the IP amplitude can be used as semi-quantitative indicators for (relative) changes in the PSI content of the leaf...
  49. ncbi From red to blue to far-red in Lhca4: how does the protein modulate the spectral properties of the pigments?
    Emilie Wientjes
    Department of Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen, The Netherlands
    Biochim Biophys Acta 1817:711-7. 2012
    ..These findings are discussed in the light of previously proposed non-photochemical quenching models...
  50. pmc Ultrafast transient absorption studies on Photosystem I reaction centers from Chlamydomonas reinhardtii. 1. A new interpretation of the energy trapping and early electron transfer steps in Photosystem I
    Marc G Müller
    Max Planck Institut fur Bioanorganische Chemie, Stiftstr 34 36, D 45470 Mulheim ad Ruhr, Germany
    Biophys J 85:3899-922. 2003
    ..reinhardtii seems to be best suited to further characterize the electron transfer steps and mechanisms in the reaction center of PSI...
  51. ncbi Overexpression of CaHSP26 in transgenic tobacco alleviates photoinhibition of PSII and PSI during chilling stress under low irradiance
    Shang Jing Guo
    College of Life Sciences, Shandong Agricultural University, Tai an, PR China
    J Plant Physiol 164:126-36. 2007
    ..These results suggest that CP sHSP protein plays an important role in protection of PSII and PSI during chilling stress under low irradiance...
  52. pmc Isolation and characterization of homodimeric type-I reaction center complex from Candidatus Chloracidobacterium thermophilum, an aerobic chlorophototroph
    Yusuke Tsukatani
    Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, Pennsylvania 16802, USA
    J Biol Chem 287:5720-32. 2012
    ..4 chlorophyll a(PD), and 1.6 Zn-bacteriochlorophyll a(P)' molecules per P840 (12.8:8.0:2.0). The possible functions of the Zn-bacteriochlorophyll a(P)' molecules and the carotenoid-binding protein are discussed...
  53. ncbi Probing the structure of Lhca3 by mutation analysis
    Milena Mozzo
    Istituto di Biofisica CNR C o ITC via Sommarvie 18 38100 Povo Trento, Italy
    Biochim Biophys Acta 1757:1607-13. 2006
    ..Evidence is also shown for the presence in Lhca3 of chlorophylls in sites 1013 and 1023...
  54. ncbi Protein-protein interactions by molecular modeling and biochemical characterization of PSI-LHCI supercomplexes from Chlamydomonas reinhardtii
    Venkateswarlu Yadavalli
    Department of Biochemistry, University of Hyderabad, Hyderabad, India 500046
    Mol Biosyst 7:3143-51. 2011
    ..Thus, our 3D model may give valid structural information of the PSI-LHCI arrangement and its physiological role in C. reinhardtii...
  55. ncbi Inhibition of photosystems I and II and enhanced back flow of photosystem I electrons in cucumber leaf discs chilled in the light
    S J Kim
    Research School of Biological Sciences, Australian National University, GPO Box 475, Canberra, ACT 2601, Australia
    Plant Cell Physiol 42:842-8. 2001
    ..We suggest that promotion of controlled charge recombination and cyclic electron flow round PSI during chilling of leaves in the light may partly prevent further damage to both photosystems...
  56. ncbi Novel insights into plant light-harvesting complex II phosphorylation and 'state transitions'
    Mikko Tikkanen
    Molecular Plant Biology, Department of Biochemistry and Food Chemistry, University of Turku, FIN 20014 Turku, Finland
    Trends Plant Sci 16:126-31. 2011
    ....
  57. ncbi CO2 response of cyclic electron flow around PSI (CEF-PSI) in tobacco leaves--relative electron fluxes through PSI and PSII determine the magnitude of non-photochemical quenching (NPQ) of Chl fluorescence
    Chikahiro Miyake
    Research Institute of Innovative Technology for the Earth, 9 2 Kizugawadai, Kizu cho, Soraku gun, Kyoto, 619 0292 Japan
    Plant Cell Physiol 46:629-37. 2005
    ..The main physiological function of CEF-PSI in photosynthesis of higher plants is discussed...
  58. pmc IsiA is required for the formation of photosystem I supercomplexes and for efficient state transition in synechocystis PCC 6803
    Qiang Wang
    Department of Applied Science, University of Arkansas, Little Rock, Arkansas, United States of America
    PLoS ONE 5:e10432. 2010
    ..These results demonstrated that IsiA is required for the formation of PSI trimers and other higher complexes, and that IsiA is critical for efficient state transition...
  59. ncbi Identification of a specific fucoxanthin-chlorophyll protein in the light harvesting complex of photosystem I in the diatom Cyclotella meneghiniana
    Thomas Veith
    Institute for Molecular Bio Sciences, Johann Wolfgang Goethe University, SiesmayerstraBe 70, D 60323 Frankfurt am Main, Germany
    Biochim Biophys Acta 1787:905-12. 2009
    ..Thus, an association of FCPb and PSI is assumed...
  60. pmc Interaction between starch breakdown, acetate assimilation, and photosynthetic cyclic electron flow in Chlamydomonas reinhardtii
    Xenie Johnson
    UMR 7141, CNRS et Université Pierre et Marie Curie Paris VI, Institut de Biologie Physico Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France
    J Biol Chem 287:26445-52. 2012
    ....
  61. pmc Control of hydrogen photoproduction by the proton gradient generated by cyclic electron flow in Chlamydomonas reinhardtii
    Dimitri Tolleter
    Commissariat à l Énergie Atomique et aux Énergies Alternatives, Direction des Sciences du Vivant, Institut de Biologie Environementale et de Biotechnologie, Laboratoire de Bioénergétique et Biotechnologie des Bactéries et Microalgues, Commissariat à l Energie Atomique Cadarache, 13108 Saint Paul Lez Durance, France
    Plant Cell 23:2619-30. 2011
    ..Regulation of the trans-thylakoidal proton gradient by monitoring pgrl1 expression opens new perspectives toward reprogramming the cellular metabolism of microalgae for enhanced H₂ production...
  62. ncbi Characterization of PSI recovery after chilling-induced photoinhibition in cucumber (Cucumis sativus L.) leaves
    Zishan Zhang
    State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai an, 271018, China
    Planta 234:883-9. 2011
    ..Under a given photon flux density, faster recovery of PSII compared to PSI was detrimental to the recovery of PSI or even to the whole photosystem...
  63. ncbi Selective excitation of photosystems in chloroplasts inside plant leaves observed by near-infrared laser-based fluorescence spectral microscopy
    Makoto Hasegawa
    Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo ku, Kyoto, 606 8502 Japan
    Plant Cell Physiol 51:225-38. 2010
    ..A new methodology using an NIR laser to detect the PSI/PSII ratio in single chloroplasts in leaves at room temperature is described...
  64. ncbi Mutants for photosystem I subunit D of Arabidopsis thaliana: effects on photosynthesis, photosystem I stability and expression of nuclear genes for chloroplast functions
    Anna Ihnatowicz
    Abteilung für Pflanzenzüchtung und Ertragsphysiologie, Max Planck Institut fur Zuchtungsforschung, Carl von Linne Weg 10, D 50829 Köln, Germany
    Plant J 37:839-52. 2004
    ..Increased dosage of PsaD2 in the psad1-1 background restores the WT phenotype, indicating that PSI-D1 and PSI-D2 have redundant functions...
  65. ncbi The PsaE subunit of photosystem I prevents light-induced formation of reduced oxygen species in the cyanobacterium Synechocystis sp. PCC 6803
    Robert Jeanjean
    Laboratoire de Chimie Bacterienne, CNRS UPR 9043, Institut de Biologie Structurale et Microbiologie, 31 Chemin Joseph Aiguier, F 13402 Marseille Cedex 20, France
    Biochim Biophys Acta 1777:308-16. 2008
    ..PsaE-deficient Synechocystis cells can counteract the chronic photoreduction of oxygen by increasing their capacity to detoxify reactive oxygen species...
  66. ncbi The long-term responses of the photosynthetic proton circuit to drought
    Kaori Kohzuma
    Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara, Japan
    Plant Cell Environ 32:209-19. 2009
    ....
  67. ncbi Proteomic approach to characterize the supramolecular organization of photosystems in higher plants
    Jesco Heinemeyer
    Institut für Angewandte Genetik, Universitat Hannover, Herrenhauser Str 2, D 30419 Hannover, Germany
    Phytochemistry 65:1683-92. 2004
    ..Further application of this experimental approach will allow new insights into the supermolecular organization of photosystems in plants...
  68. ncbi Crystal structure of plant photosystem I
    Adam Ben-Shem
    Department of Biochemistry, The George S Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
    Nature 426:630-5. 2003
    ....
  69. ncbi The reaction center of green sulfur bacteria(1)
    G Hauska
    Lehstuhl für Zellbiologie und Pflanzenphysiologie, Universitat Regensburg, Germany
    Biochim Biophys Acta 1507:260-77. 2001
    ..Furthermore, it is still unclear which cytochrome c is the physiological electron donor to P840(+). Also the way of NAD(+)-reduction is unknown, since a gene equivalent to ferredoxin-NADP(+) reductase is not present in the genome...
  70. ncbi A quantitative model of the domain structure of the photosynthetic membrane
    P Albertsson
    Dept of Biochemistry, Lund University, PO Box 124, SE 221 00, Lund, Sweden
    Trends Plant Sci 6:349-58. 2001
    ..The excess pigments associated with photosystem I are thought to be located in the stroma lamellae...
  71. ncbi Functional organization of a plant Photosystem I: evolution of a highly efficient photochemical machine
    Alexey Amunts
    Biochemistry Department, The George S Wise Faculty of Life Sciences, The Daniella Rich Institute for Structural Biology, Tel Aviv University, Sherman Building, Room 531, Tel Aviv 69978, Israel
    Plant Physiol Biochem 46:228-37. 2008
    ..The present comprehensive structural analysis summarizes our current state of knowledge, providing the first glimpse at the architecture of this highly efficient photochemical machine at the atomic level...
  72. ncbi Methylviologen and dibromothymoquinone treatments of pea leaves reveal the role of photosystem I in the Chl a fluorescence rise OJIP
    Gert Schansker
    Bioenergetics Laboratory, University of Geneva, Chemin des Embrouchis 10, CH 1254 Jussy, Geneva, Switzerland
    Biochim Biophys Acta 1706:250-61. 2005
    ..3 s. Further, alternative explanations of the IP phase that have been proposed in the literature are discussed...
  73. ncbi Supramolecular organization of thylakoid membrane proteins in green plants
    Jan P Dekker
    Faculty of Sciences, Division of Physics and Astronomy, Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam, Netherlands
    Biochim Biophys Acta 1706:12-39. 2005
    ....
  74. ncbi A novel photosynthetic strategy for adaptation to low-iron aquatic environments
    Devendra Chauhan
    Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287, United States
    Biochemistry 50:686-92. 2011
    ..Excitation trapping and electron transfer are highly efficient, allowing cyanobacteria to avoid oxidative stress. This mechanism may be a major factor used by cyanobacteria to successfully adapt to modern low-Fe environments...
  75. pmc Pigment organization and energy transfer dynamics in isolated photosystem I (PSI) complexes from Arabidopsis thaliana depleted of the PSI-G, PSI-K, PSI-L, or PSI-N subunit
    Janne A Ihalainen
    Department of Chemistry, University of Jyvaskyla, Finland
    Biophys J 83:2190-201. 2002
    ....
  76. ncbi Digalactosyl-diacylglycerol deficiency impairs the capacity for photosynthetic intersystem electron transport and state transitions in Arabidopsis thaliana due to photosystem I acceptor-side limitations
    Alexander G Ivanov
    Department of Biology and The Biotron, University of Western Ontario, London, Ontario, Canada
    Plant Cell Physiol 47:1146-57. 2006
    ..These results are discussed in terms of thylakoid membrane domain reorganization in response to DGDG deficiency in A. thaliana...
  77. pmc The mutant of sll1961, which encodes a putative transcriptional regulator, has a defect in regulation of photosystem stoichiometry in the cyanobacterium Synechocystis sp. PCC 6803
    Tamaki Fujimori
    Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa shi, Chiba, Japan
    Plant Physiol 139:408-16. 2005
    ..Our results demonstrate that a transcriptional regulator, Sll1961, and its possible target proteins, including Sll1773, may be responsible for the regulation of photosystem stoichiometry in response to high light...
  78. ncbi A cyanobacterial gene family coding for single-helix proteins resembling part of the light-harvesting proteins from higher plants
    C Funk
    Department of Plant Biology, Center for the Study of Early Events in Photosynthesis, Arizona State University, Tempe 85287 1601, USA
    Biochemistry 38:9397-404. 1999
    ..The SCPs represent a new group of cyanobacterial proteins that, in view of their primary structure and response to deletion of photosystem I, are likely to be involved in transient pigment binding...
  79. ncbi N-terminal processing of Lhca3 Is a key step in remodeling of the photosystem I-light-harvesting complex under iron deficiency in Chlamydomonas reinhardtii
    Bianca Naumann
    Plant Science Institute, Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
    J Biol Chem 280:20431-41. 2005
    ..However, in contrast to iron deficiency, comparative MS/MS peptide profiling using isotopic labeling of proteins demonstrated that RNAi depletion of Lhca3 caused strong reduction of almost all Lhca proteins in isolated PSI particles...
  80. pmc Independent initiation of primary electron transfer in the two branches of the photosystem I reaction center
    Marc G Müller
    Max Planck Institut fur Bioanorganische Chemie, D 45470 Mulheim ad Ruhr, Germany
    Proc Natl Acad Sci U S A 107:4123-8. 2010
    ..A unique kinetic modeling approach allows estimation of the individual ET rates within the two cofactor branches...
  81. ncbi Species-specific differences of the spectroscopic properties of P700: analysis of the influence of non-conserved amino acid residues by site-directed mutagenesis of photosystem I from Chlamydomonas reinhardtii
    Heike Witt
    Max Volmer Laboratorium für Biophysikalische Chemie, Technische Universitat Berlin, Strasse des 17, Juni 135, 10623 Berlin, Germany
    J Biol Chem 278:46760-71. 2003
    ..The results indicate structural differences among PS I from higher plants, algae, and cyanobacteria and give further insight into specific protein-cofactor interactions contributing to the optical spectra...
  82. pmc The low-energy forms of photosystem I light-harvesting complexes: spectroscopic properties and pigment-pigment interaction characteristics
    Roberta Croce
    Department of Biophysical Chemistry, Groningen Bimolecular Sciences and Biotechnology Institute, University of Groningen, Groningen, The Netherlands
    Biophys J 93:2418-28. 2007
    ..A second red emission form in Lhca4 was detected at 705 nm and originates from a broad absorption band peaking at 690 nm. This fluorescence emission is present also in the Lhca4-N-47H mutant, which lacks the 733-nm emission band...
  83. pmc Photosystem II complex in vivo is a monomer
    Takeshi Takahashi
    Graduate School of Life Science, University of Hyogo, 3 2 1 Kohto, Kamigohri, Ako gun, Hyogo 678 1297, Japan
    J Biol Chem 284:15598-606. 2009
    ..Our proposal will lead to a re-evaluation of many crystallographic models of membrane protein complexes in terms of their oligomerization status...
  84. ncbi Cyclic electron transport around photosystem I: genetic approaches
    Toshiharu Shikanai
    Graduate School of Agriculture, Kyushu University, Fukuoka, Japan 812 8581
    Annu Rev Plant Biol 58:199-217. 2007
    ..Based on several lines of evidence presented here, it is necessary to reconsider the fundamental mechanisms of chloroplast energetics...
  85. ncbi Proteomic analysis of a highly active photosystem II preparation from the cyanobacterium Synechocystis sp. PCC 6803 reveals the presence of novel polypeptides
    Yasuhiro Kashino
    Department of Biology, Washington University, One Brookings Drive, St Louis, MO 63130, USA
    Biochemistry 41:8004-12. 2002
    ..This work describes newly identified proteins in a highly purified cyanobacterial PSII preparation that is being widely used to investigate the structure, function, and biogenesis of this photosystem...
  86. ncbi Structure and function of intact photosystem 1 monomers from the cyanobacterium Thermosynechococcus elongatus
    Eithar El-Mohsnawy
    Plant Biochemistry, Ruhr University Bochum, 44780 Bochum, Germany
    Biochemistry 49:4740-51. 2010
    ....
  87. ncbi Late assembly steps and dynamics of the cyanobacterial photosystem I
    Ulf Dühring
    Institute of Biology, Humboldt University Berlin, 10115 Berlin, Germany
    J Biol Chem 282:10915-21. 2007
    ..Implications of the presented data with respect to Ycf37 function are discussed...
  88. pmc The chloroplast NAD(P)H dehydrogenase complex interacts with photosystem I in Arabidopsis
    Lianwei Peng
    Department of Botany, Graduate School of Science, Kyoto University, Sakyo ku, Kyoto 606 8502, Japan
    J Biol Chem 283:34873-9. 2008
    ..Although the NDH complex exists as a monomer in etioplasts, it interacts with PSI to form a supercomplex within 48 h during chloroplast development...
  89. pmc The evolutionarily conserved tetratrico peptide repeat protein pale yellow green7 is required for photosystem I accumulation in Arabidopsis and copurifies with the complex
    Jana Stöckel
    Institut für Allgemeine Botanik und Pflanzenphysiologie, Friedrich Schiller University, 07747 Jena, Germany
    Plant Physiol 141:870-8. 2006
    ..Whereas the cyanobacterial protein mediates more efficient PSI accumulation, the higher plant protein is absolutely required for complex assembly or maintenance...
  90. ncbi Enhancement of cyclic electron flow around PSI at high light and its contribution to the induction of non-photochemical quenching of chl fluorescence in intact leaves of tobacco plants
    Chikahiro Miyake
    Research institute of Innovative Technology for the Earth RITE, 9 2 Kizugawadai, Kizu cho, Soraku gun, Kyoto, 619 0292 Japan
    Plant Cell Physiol 45:1426-33. 2004
    ..These results indicate that limitation of LEF induced CEF-PSI, which, in turn, helped to dissipate excess photon energy by driving NPQ of Chl fluorescence...
  91. ncbi Insertion of PsaK into the thylakoid membrane in a "Horseshoe" conformation occurs in the absence of signal recognition particle, nucleoside triphosphates, or functional albino3
    A Mant
    Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
    J Biol Chem 276:36200-6. 2001
    ..The data raise the possibility of a wholly spontaneous insertion pathway...
  92. ncbi Photosystem I, an improved model of the stromal subunits PsaC, PsaD, and PsaE
    O Klukas
    Institut fur Kristallographie, Freie Universitat Berlin, Takustrassett 6, D 14195 Berlin, Germany
    J Biol Chem 274:7351-60. 1999
    ..The 11-transmembrane alpha-helices of these subunits can now be assigned uniquely to the hydrophobic segments identified by hydrophobicity analyses...
  93. ncbi Effect of PGR5 impairment on photosynthesis and growth in Arabidopsis thaliana
    Yuri Nakajima Munekage
    CEA Cadarache, DSV, IBEB, SBVME, Laboratoire de Bioénergétique et Biotechnologie des Bactéries et Microalgues, UMR 6191 CNRS CEA Université Aix Marseille, F 13108 Saint Paul lez Durance, France
    Plant Cell Physiol 49:1688-98. 2008
    ..We discuss these data in relation to the role of PGR5-dependent regulatory mechanisms in tuning the ATP/NADPH ratio and preventing inactivation of PSI, especially under conditions of high irradiance or enhanced photorespiration...
  94. ncbi Isolation and structural characterization of trimeric cyanobacterial photosystem I complex with the help of recombinant antibody fragments
    G Tsiotis
    Max Planck Institut fur Biophysik, Frankfurt am Main, Germany
    Eur J Biochem 231:823-30. 1995
    ..The position of the bound Fv fragment on the trimeric PSI surface was determined by high-resolution electron microscopy and digital image processing...
  95. ncbi The photosystem I trimer of cyanobacteria: molecular organization, excitation dynamics and physiological significance
    N V Karapetyan
    A N Bakh Institute of Biochemistry, Russian Academy of Sciences, 117071, Moscow, Russia
    FEBS Lett 460:395-400. 1999
    ..Charge separation in the photosystem I reaction center is the fastest of all known reaction centers...
  96. ncbi The monomeric photosystem I-complex of the diatom Phaeodactylum tricornutum binds specific fucoxanthin chlorophyll proteins (FCPs) as light-harvesting complexes
    Thomas Veith
    Institute of Molecular Biosciences, Johann Wolfgang Goethe University, Siesmayerstrasse 70, D 60323 Frankfurt am Main, Germany
    Biochim Biophys Acta 1767:1428-35. 2007
    ..Blue Native-PAGE, gel filtration and first electron microscopy studies of the PSI-FCP sample revealed a monomeric complex comparable in size and shape to the PSI-LHCI complex of green algae...
  97. ncbi The assembly of protein subunits and cofactors in photosystem I
    Wolfram Saenger
    Institut für Chemie Kristallographie, Freie Universitat Berlin, Takustrasse 6, D 14195, Berlin, Germany
    Curr Opin Struct Biol 12:244-54. 2002
    ..Understanding the assembly of the 12 protein subunits and 128 cofactors in photosystem I allows us to study the possible functions of the individual players in this protein-cofactor complex...
  98. ncbi A dip in the chlorophyll fluorescence induction at 0.2-2 s in Trebouxia-possessing lichens reflects a fast reoxidation of photosystem I. A comparison with higher plants
    Petr Ilík
    Laboratory of Biophysics, Faculty of Science, Palacky University, tr Svobody 26, CZ 77146 Olomouc, Czech Republic
    Biochim Biophys Acta 1757:12-20. 2006
    ..The increasing part of the dip probably reflects a transient reduction of plastoquinone (PQ) pool that is not associated with cyclic electron flow around PSI. Possible causes of this MV-insensitive PQ reduction are discussed...
  99. pmc Efficient light harvesting in a dark, hot, acidic environment: the structure and function of PSI-LHCI from Galdieria sulphuraria
    Balakumar Thangaraj
    Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona, USA
    Biophys J 100:135-43. 2011
    ..This tight coupling helps Galdieria perform efficient light harvesting under the low-light conditions present in its natural endolithic habitat...
  100. pmc Phosphatidylglycerol is essential for oligomerization of photosystem I reaction center
    Ildiko Domonkos
    Institute of Plant Biology, Biological Research Center of the Hungarian Academy of Sciences, H 6701 Szeged, Hungary
    Plant Physiol 134:1471-8. 2004
    ..Our data suggest an indispensable role for PG in the PsaL-mediated assembly of the PSI reaction center...
  101. ncbi Regulation of photosystem I reaction center genes in Synechocystis sp. strain PCC 6803 during Light acclimation
    Mirkka Herranen
    Plant Physiology and Molecular Biology, Department of Biology, University of Turku, FIN 20014 Turku, Finland
    Plant Cell Physiol 46:1484-93. 2005
    ..The scantiness of PsaA translation in darkness despite the abundance of psaA transcripts demonstrated that the comprehensive regulation of PSI accumulation also involves regulation at the level of translation...

Research Grants19

  1. Femtosecond nano-crystallography of membrane proteins
    Petra Fromme; Fiscal Year: 2013
    ..abstract_text> ..
  2. DISTANCE MEASUREMENTS IN METALLOPROTEINS
    GARY BRUDVIG; Fiscal Year: 2002
    ....
  3. STRUCTURE AND ORGANIZATION OF THE PHOTOSYSTEM I COMPLEX
    Parag Chitnis; Fiscal Year: 1999
    ..We plan to determine their structures from analysis of X-ray diffraction patterns. Finally we will integrate biochemical and X-ray crystallographic data to propose model for the detailed structure of photosystem I. ..
  4. ASSEMBLY OF CAB POLYPEPTIDES
    Neil Hoffman; Fiscal Year: 1993
    ..The aforementioned approaches should help us understand how to account for the nonrandom distribution of proteins within physically continuous membranes...
  5. 250/500 GHZ GYROTRON BASED DNP/EPR SPECTROMETER
    RICHARD TEMKIN; Fiscal Year: 2003
    ..5-1.0% bandwidth) and advanced pulse formats for EPR studies. We will also extend gyrotron oscillators to 600-800 GHz. Such gyrotrons could be used with future 0.9- 1.2 GHz NMR spectrometers. ..
  6. 250/500 GHZ GYROTRON BASED DNP/EPR SPECTROMETER
    RICHARD TEMKIN; Fiscal Year: 2002
    ..5-1.0% bandwidth) and advanced pulse formats for EPR studies. We will also extend gyrotron oscillators to 600-800 GHz. Such gyrotrons could be used with future 0.9- 1.2 GHz NMR spectrometers. ..
  7. CHARACTERIZATION OF MEMBRANE PROTEIN COMPLEXES
    L Staehelin; Fiscal Year: 1993
    ..Preliminary experiments show that this gel system has great potential for analyzing photosystem I-defective mutants in Chlamydomonas...
  8. USE OF MUTANTS TO STUDY CYANOBACTERIAL MEMBRANE PROTEINS
    HIMADRI PAKRASI; Fiscal Year: 1993
    ..Submembrane preparations will be developed for physicochemical analyses of these mutants...
  9. Disassembly and degradation of Photosystem I
    Kevin Redding; Fiscal Year: 2005
    ....
  10. Supercritical Fluid Extraction for Membrane Proteomics
    Lloyd Smith; Fiscal Year: 2006
    ..The successful development of this new technology for membrane proteomics will address a critical gap in current proteomics efforts. [unreadable] [unreadable]..
  11. MOLECULAR AND CELLULAR BACTERIAL PATHOGENESIS
    David Briles; Fiscal Year: 2008
    ..The MCBP advisory committee will advise the trainees in their research and training programs and in their search for a job or postdoctoral position at the completion of their MCBP training. [unreadable] [unreadable]..
  12. Structure of the Survival Motor Neuron Protein (SMN)
    James Allen; Fiscal Year: 2006
    ..Together, these results should enhance our understanding of the molecular reasons for SMA and potentially lead to new strategies for the development of therapies. ..
  13. MATURATION OF CHLOROPLAST CYTOCHROMES
    Sabeeha Merchant; Fiscal Year: 2001
    ....
  14. Single Molecule Studies of SNARE-Induced Vesicle Fusion
    Axel T Brunger; Fiscal Year: 2010
    ..Such a system could serve as an efficient model system for novel drug discovery. ..
  15. Alkynyliodonium Salts and Derived Diyls in Synthesis
    Ken Feldman; Fiscal Year: 2009
    ..abstract_text> ..
  16. Nutritional Copper Signaling and Homeostasis
    Sabeeha Merchant; Fiscal Year: 2010
    ..Cu cells and err I vs. wild-type cells, in parallel with sub-proteomic gel- and multi-dimensional chromatography-based analyses of copper-replete vs. copper-deficient cells. ..
  17. New Methodology for Indole Alkaloid Syntheses
    Ken S Feldman; Fiscal Year: 2010
    ..The use of a new variant of the Pummerer reaction to control both oxidation level and reaction site within the indole nucleus forms the basis of this chemistry. ..
  18. Chemical and Biological Studies on Biaryl Phenolics
    Ken Feldman; Fiscal Year: 2005
    ..The search for selective 20S proteosome inhibitors among the Ntn-type proteases will be advanced by these investigations. ..
  19. REGULATION OF BILIPROTEIN IN CYANOBACTERIA
    DONALD BRYANT; Fiscal Year: 2002
    ..These last studies could explain bloom disappearance in natural populations and could suggest new approaches for the control of problematic or toxic cyanobacteria in water supplies. ..