photosynthetic reaction center complex proteins

Summary

Summary: Protein complexes that take part in the process of PHOTOSYNTHESIS. They are found in the THYLAKOID MEMBRANES of PLANTS and other photosynthetic organisms. There are two major complexes involved in the photosynthetic process called PHOTOSYSTEM I and PHOTOSYSTEM II.

Top Publications

  1. ncbi Architecture of the photosynthetic oxygen-evolving center
    Kristina N Ferreira
    Department of Biological Sciences, Imperial College London, London, SW7 2AZ, UK
    Science 303:1831-8. 2004
  2. ncbi Role of chloroplast protein kinase Stt7 in LHCII phosphorylation and state transition in Chlamydomonas
    Nathalie Depège
    Department of Molecular Biology and Department of Plant Biology, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva 4, Switzerland
    Science 299:1572-5. 2003
  3. pmc The violaxanthin cycle protects plants from photooxidative damage by more than one mechanism
    M Havaux
    Commissariat à l Energie Atomique Cadarache, Département d Ecophysiologie Végétale et de Microbiologie, F 13108 Saint Paul lez Durance, France
    Proc Natl Acad Sci U S A 96:8762-7. 1999
  4. pmc HCF152, an Arabidopsis RNA binding pentatricopeptide repeat protein involved in the processing of chloroplast psbB-psbT-psbH-petB-petD RNAs
    Karin Meierhoff
    Heinrich Heine Universitat, Institut für Entwicklungs und Molekularbiologie der Pflanzen, 40225 Dusseldorf, Germany
    Plant Cell 15:1480-95. 2003
  5. pmc Identification of cis-acting RNA leader elements required for chloroplast psbD gene expression in Chlamydomonas
    J Nickelsen
    Lehrstuhl für Allgemeine Botanik, Ruhr Universitat Bochum, 44780 Bochum, Germany
    Plant Cell 11:957-70. 1999
  6. pmc State transitions in Chlamydomonas reinhardtii. The role of the Mehler reaction in state 2-to-state 1 transition
    Giorgio Forti
    Istituto di Biofisica del Consiglio Nazionale delle Ricerche, Sezione di Milano Dipartimento di Biologia, Milan 20133, Italy
    Plant Physiol 137:492-9. 2005
  7. ncbi Rapid regulation of light harvesting and plant fitness in the field
    Carsten Külheim
    Umea Plant Science Center, Department of Plant Physiology, Umea University, SE 901 87 Umea, Sweden
    Science 297:91-3. 2002
  8. pmc Inhibition of plastocyanin to P(700)(+) electron transfer in Chlamydomonas reinhardtii by hyperosmotic stress
    J A Cruz
    Institute of Biological Chemistry, Department of Biochemistry and Biophysics, 289 Clark Hall, Washington State University, Pullman, WA 99164-6340, USA
    Plant Physiol 127:1167-79. 2001
  9. pmc Molecular genetic analysis suggesting interactions between AppA and PpsR in regulation of photosynthesis gene expression in Rhodobacter sphaeroides 2.4.1
    M Gomelsky
    Department of Microbiology and Molecular Genetics, The University of Texas Medical School at Houston, 77030, USA
    J Bacteriol 179:128-34. 1997
  10. pmc Long-lived quantum coherence in photosynthetic complexes at physiological temperature
    Gitt Panitchayangkoon
    Department of Chemistry and The James Franck Institute, University of Chicago, Chicago, IL 60637, USA
    Proc Natl Acad Sci U S A 107:12766-70. 2010

Research Grants

  1. PROTEIN SEQUENCING FACILITY
    Francis Millett; Fiscal Year: 1990
  2. Structural Basis of Proton Transfer Pathways
    Marianne Schiffer; Fiscal Year: 2006
  3. CRYSTALLIZATION & CHARACTERIZATION OF MEMBRANE PROTEINS
    James Allen; Fiscal Year: 1993
  4. STRUCTURE & FUNCTION OF PHOTOSYNTHETIC REACTION CENTERS
    George Feher; Fiscal Year: 2003
  5. HemeCu Oxidase: Calculated Electron and Proton Transfers
    MARILYN GUNNER; Fiscal Year: 2005
  6. A BACTERIAL FACTORY FOR PRODUCTION OF MEMBRANE PROTEINS
    PHILIP LAIBLE; Fiscal Year: 2004
  7. Structure of the Survival Motor Neuron Protein (SMN)
    James Allen; Fiscal Year: 2006
  8. Assembly and Functions of Photosynthetic Water Oxidases
    G Dismukes; Fiscal Year: 2006
  9. Singlet Oxygen Signaling
    Krishna Niyogi; Fiscal Year: 2007
  10. EPR Studies of Biological PCET Elements
    R Britt; Fiscal Year: 2008

Detail Information

Publications282 found, 100 shown here

  1. ncbi Architecture of the photosynthetic oxygen-evolving center
    Kristina N Ferreira
    Department of Biological Sciences, Imperial College London, London, SW7 2AZ, UK
    Science 303:1831-8. 2004
    ..The details of the surrounding coordination sphere of the metal cluster and the implications for a possible oxygen-evolving mechanism are discussed...
  2. ncbi Role of chloroplast protein kinase Stt7 in LHCII phosphorylation and state transition in Chlamydomonas
    Nathalie Depège
    Department of Molecular Biology and Department of Plant Biology, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva 4, Switzerland
    Science 299:1572-5. 2003
    ..Stt7 is required for the phosphorylation of the major light-harvesting protein (LHCII) and for state transition...
  3. pmc The violaxanthin cycle protects plants from photooxidative damage by more than one mechanism
    M Havaux
    Commissariat à l Energie Atomique Cadarache, Département d Ecophysiologie Végétale et de Microbiologie, F 13108 Saint Paul lez Durance, France
    Proc Natl Acad Sci U S A 96:8762-7. 1999
    ..Our results demonstrate that the violaxanthin cycle specifically protects thylakoid membrane lipids against photooxidation. Part of this protection involves a mechanism other than quenching of singlet excited chlorophylls...
  4. pmc HCF152, an Arabidopsis RNA binding pentatricopeptide repeat protein involved in the processing of chloroplast psbB-psbT-psbH-petB-petD RNAs
    Karin Meierhoff
    Heinrich Heine Universitat, Institut für Entwicklungs und Molekularbiologie der Pflanzen, 40225 Dusseldorf, Germany
    Plant Cell 15:1480-95. 2003
    ..The protein possibly exists in the chloroplast as a homodimer and is not associated with other proteins to form a high molecular mass complex...
  5. pmc Identification of cis-acting RNA leader elements required for chloroplast psbD gene expression in Chlamydomonas
    J Nickelsen
    Lehrstuhl für Allgemeine Botanik, Ruhr Universitat Bochum, 44780 Bochum, Germany
    Plant Cell 11:957-70. 1999
    ..The singular organization of the psbD 5' untranslated region could play an important role in the control of initiation of psbD mRNA translation...
  6. pmc State transitions in Chlamydomonas reinhardtii. The role of the Mehler reaction in state 2-to-state 1 transition
    Giorgio Forti
    Istituto di Biofisica del Consiglio Nazionale delle Ricerche, Sezione di Milano Dipartimento di Biologia, Milan 20133, Italy
    Plant Physiol 137:492-9. 2005
    ..The catalysis of the state 2-to-state 1 transition upon illumination of anaerobically adapted algae might represent, therefore, a relevant physiological role of this process in C. reinhardtii...
  7. ncbi Rapid regulation of light harvesting and plant fitness in the field
    Carsten Külheim
    Umea Plant Science Center, Department of Plant Physiology, Umea University, SE 901 87 Umea, Sweden
    Science 297:91-3. 2002
    ....
  8. pmc Inhibition of plastocyanin to P(700)(+) electron transfer in Chlamydomonas reinhardtii by hyperosmotic stress
    J A Cruz
    Institute of Biological Chemistry, Department of Biochemistry and Biophysics, 289 Clark Hall, Washington State University, Pullman, WA 99164-6340, USA
    Plant Physiol 127:1167-79. 2001
    ..Comparison of estimated lumenal width with the x-ray structures of plastocyanin and PS I suggest that lumenal space contracts during HOS so as to hinder the movement of docking to PS I of plastocyanin or cytochrome c(6)...
  9. pmc Molecular genetic analysis suggesting interactions between AppA and PpsR in regulation of photosynthesis gene expression in Rhodobacter sphaeroides 2.4.1
    M Gomelsky
    Department of Microbiology and Molecular Genetics, The University of Texas Medical School at Houston, 77030, USA
    J Bacteriol 179:128-34. 1997
    ..The profile of the isolated suppressor mutations in PpsR is in accord with this proposition. We propose that AppA may be involved in a redox-dependent modulation of PpsR repressor activity...
  10. pmc Long-lived quantum coherence in photosynthetic complexes at physiological temperature
    Gitt Panitchayangkoon
    Department of Chemistry and The James Franck Institute, University of Chicago, Chicago, IL 60637, USA
    Proc Natl Acad Sci U S A 107:12766-70. 2010
    ..The protein shapes the energy landscape and mediates an efficient energy transfer despite thermal fluctuations...
  11. pmc Improper excess light energy dissipation in Arabidopsis results in a metabolic reprogramming
    Martin Frenkel
    Department of Plant Physiology, Umea University, Umea Plant Science Centre, Umea, Sweden
    BMC Plant Biol 9:12. 2009
    ..Plant performance is affected by the level of expression of PsbS, a key photoprotective protein involved in the process of feedback de-excitation (FDE), or the qE component of non-photochemical quenching, NPQ...
  12. pmc Central functions of the lumenal and peripheral thylakoid proteome of Arabidopsis determined by experimentation and genome-wide prediction
    Jean Benoit Peltier
    Department of Plant Biology, Cornell University, Ithaca, New York 14853, USA
    Plant Cell 14:211-36. 2002
    ..Many of the predicted lumenal proteins must be present at concentrations at least 10,000-fold lower than proteins of the photosynthetic apparatus...
  13. ncbi Distinct distribution pattern of abundance and diversity of aerobic anoxygenic phototrophic bacteria in the global ocean
    Nianzhi Jiao
    National Key Laboratory of Marine Environmental Sciences, Xiamen University, Xiamen 361005, China
    Environ Microbiol 9:3091-9. 2007
    ..Our results suggest that AAPB abundance and diversity follow opposite trends from oligotrophic to eutrophic regimes in the ocean...
  14. ncbi Isolation and characterization of Erythrobacter sp. strains from the upper ocean
    Michal Koblizek
    Environmental Biophysics and Molecular Ecology Program, Rutgers University, 71 Dudley Road, Institute of Coastal and Marine Sciences, New Brunswick, NJ 08901, USA
    Arch Microbiol 180:327-38. 2003
    ..They required an organic carbon substrate for growth; however, they are able to supplement a significant fraction of their metabolic requirements with photosynthetically derived energy...
  15. 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...
  16. pmc Antisense inhibition of the photosynthetic antenna proteins CP29 and CP26: implications for the mechanism of protective energy dissipation
    J Andersson
    Umea Plant Science Centre, Department of Plant Physiology, Umea University, S 901 87 Umea, Sweden
    Plant Cell 13:1193-204. 2001
    ..High-light-induced violaxanthin deepoxidation to zeaxanthin was not affected, although the pool size of these pigments was decreased slightly. We conclude that CP29 and CP26 are unlikely to be sites for nonphotochemical quenching...
  17. pmc The nucleus-encoded HCF107 gene of Arabidopsis provides a link between intercistronic RNA processing and the accumulation of translation-competent psbH transcripts in chloroplasts
    S Felder
    Institut für Entwicklungs und Molekularbiologie der Pflanzen, Heinrich Heine Universitat, Universitatstrasse 1, 40225 Dusseldorf, Germany
    Plant Cell 13:2127-41. 2001
    ....
  18. ncbi A nucleus-encoded factor, CRR2, is essential for the expression of chloroplast ndhB in Arabidopsis
    Mihoko Hashimoto
    Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara 630 0101, Japan
    Plant J 36:541-9. 2003
    ..We have determined the function of a PCMP family member, indicating that the family is closely related to pentatrico-peptide PPR proteins involved in the maturation steps of organellar RNA...
  19. 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...
  20. 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...
  21. pmc Low density membranes are associated with RNA-binding proteins and thylakoids in the chloroplast of Chlamydomonas reinhardtii
    W Zerges
    Department of Molecular Biology and Department of Plant Biology, University of Geneva, 30 Quai Ernest Ansermet, CH 1211, Geneva 4, Switzerland
    J Cell Biol 140:101-10. 1998
    ....
  22. ncbi Comparison of cultivation-dependent and molecular methods for studying the diversity of anoxygenic purple phototrophs in sediments of an eutrophic brackish lagoon
    Anthony Ranchou-Peyruse
    Laboratoire d Ecologie Moléculaire Microbiologie, EA3525, Universite de Pau et des Pays de l Adour, 64013 Pau Cedex, France
    Environ Microbiol 8:1590-9. 2006
    ....
  23. ncbi Systemic signaling and acclimation in response to excess excitation energy in Arabidopsis
    S Karpinski
    Department of Forest Genetics and Plant Physiology, Faculty of Forestry, Swedish University of Agricultural Sciences, SE 901 83 Umea, Sweden
    Science 284:654-7. 1999
    ..Systemic redox changes in the proximity of photosystem II, hydrogen peroxide, and the induction of antioxidant defenses are key determinants of this mechanism of systemic acquired acclimation...
  24. ncbi Mechanisms of protein import and routing in chloroplasts
    Paul Jarvis
    Department of Biology, University of Leicester, Leicester LE1 7RH, UK
    Curr Biol 14:R1064-77. 2004
    ..Once inside the organelle, many chloroplast proteins engage one of four additional protein sorting mechanisms that direct targeting to the internal thylakoid membrane system...
  25. pmc The phytochrome-interacting transcription factor, PIF3, acts early, selectively, and positively in light-induced chloroplast development
    Elena Monte
    Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
    Proc Natl Acad Sci U S A 101:16091-8. 2004
    ..These data suggest that PIF3 may function in early phy signaling at the dark-to-light transition, not only during initial seedling deetiolation, but daily at dawn under diurnal light-dark cycles...
  26. 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...
  27. pmc The Arabidopsis thylakoid protein PAM68 is required for efficient D1 biogenesis and photosystem II assembly
    Ute Armbruster
    Lehrstuhl für Molekularbiologie der Pflanzen Botanik, Department Biologie I, Ludwig Maximilians Universitat, Martinsried, Germany
    Plant Cell 22:3439-60. 2010
    ..Our data imply that PAM68 proteins promote early steps in PSII biogenesis in cyanobacteria and plants, but their inactivation is differently compensated for in the two classes of organisms...
  28. ncbi COOH-terminal residues of D1 and the 44 kDa CPa-2 at spinach photosystem II core complex
    M Takahashi
    Research Institute for Food Science, Kyoto University, Japan
    FEBS Lett 240:6-8. 1988
    ..Nine amino acids may be cleaved from the COOH-terminus of pre-D1 during maturation. In contrast, CPa-2 was not modified at its COOH-terminus...
  29. pmc Sequences directing C to U editing of the plastid psbL mRNA are located within a 22 nucleotide segment spanning the editing site
    S Chaudhuri
    Waksman Institute, Rutgers, State University of New Jersey 08855 0759, USA
    EMBO J 15:5958-64. 1996
    ..Distinct cissequences and trans-factor requirements for the psbL and ndhD editing sites indicate an individual recognition mechanism for the editing of plastid initiation codons...
  30. ncbi From seed to seed: the role of photoreceptors in Arabidopsis development
    James A Sullivan
    Department of Molecular, Cellular, and Developmental Biology, Yale University, 165 Prospect Street, New Haven, CT 06520 8104, USA
    Dev Biol 260:289-97. 2003
    ....
  31. ncbi A light-dependent mechanism for massive accumulation of manganese in the photosynthetic bacterium Synechocystis sp. PCC 6803
    Nir Keren
    Department of Biology, Washington University, St Louis, Missouri 63130 4899, USA
    Biochemistry 41:15085-92. 2002
    ..Next, manganese is transported through the inner membrane into pool B. We propose that pool A serves as a store that allows the cells to overcome transient limitations in manganese in the environment...
  32. ncbi The major antenna complex of photosystem II has a xanthophyll binding site not involved in light harvesting
    S Caffarri
    Dipartimento Scientifico e Tecnologico, , Strada Le Grazie 15, Verona 37134, Italy
    J Biol Chem 276:35924-33. 2001
    ..It is proposed that this xanthophyll binding site represents a reservoir of readily available violaxanthin for the operation of the xanthophyll cycle in excess light conditions...
  33. ncbi Chloroplast Oxa1p homolog albino3 is required for post-translational integration of the light harvesting chlorophyll-binding protein into thylakoid membranes
    M Moore
    Biological Sciences Department, University of Arkansas, Fayetteville, Arkansas 72701, USA
    J Biol Chem 275:1529-32. 2000
    ..In contrast, transport by the thylakoid Sec or Delta pH pathways was unaffected. These data support a model whereby a distinct translocase containing ALB3 is used to integrate LHCP into thylakoid membranes...
  34. ncbi Bacteriophytochrome controls photosystem synthesis in anoxygenic bacteria
    Eric Giraud
    LSTM TA 10 J Laboratoire des Symbioses Tropicales et Méditerranéennes, UMR 113, IRD CIRAD INRA ENSA M Campus de Baillarguet, 34398 Montpellier Cedex 5, France
    Nature 417:202-5. 2002
    ..This specific mechanism of regulation may represent an important ecological adaptation to optimize the plant-bacteria interaction...
  35. pmc Responses of the Rhodobacter sphaeroides transcriptome to blue light under semiaerobic conditions
    Stephan Braatsch
    Institut fur Mikrobiologie und Molekularbiologie, Universitat Giessen, Giesse, Germany
    J Bacteriol 186:7726-35. 2004
    ..The identified transcriptome responses provided a framework for deciphering blue-light-dependent signal transduction pathways in R. sphaeroides...
  36. ncbi Lipidic sponge phase crystallization of membrane proteins
    Pia Wadsten
    Department of Chemical and Biological Engineering, Pharmaceutical Technology, Chalmers University of Technology, Goteborg, Sweden
    J Mol Biol 364:44-53. 2006
    ..In contrast to our earlier lipidic cubic phase reaction centre structure, the mobile ubiquinone could be built and refined. The practical advantages of the sponge phase make it a potent tool for crystallization of membrane proteins...
  37. ncbi On the photosynthetic properties of marine bacterium COL2P belonging to Roseobacter clade
    Michal Koblizek
    Institute of Microbiology CAS, Opatovicky mlyn, Trebon, Czech Republic
    Arch Microbiol 192:41-9. 2010
    ..These results suggest that light-derived energy can provide a substantial fraction of COL2P metabolic needs...
  38. ncbi A single flavoprotein, AppA, integrates both redox and light signals in Rhodobacter sphaeroides
    Stephan Braatsch
    Institut fur Mikrobiologie und Molekularbiologie, Universitat Giessen, Germany
    Mol Microbiol 45:827-36. 2002
    ..capsulatus, is known to participate in the redox-dependent control of photosynthesis gene expression. Thus, AppA is the first example of a protein with dual sensing capabilities that integrates both redox and light signals...
  39. ncbi Botany. State transitions--a question of balance
    John F Allen
    Department of Plant Biochemistry, Center for Chemistry and Chemical Engineering, Box 124, Lund University, SE 221 00 Lund, Sweden
    Science 299:1530-2. 2003
  40. ncbi Xanthophyll biosynthetic mutants of Arabidopsis thaliana: altered nonphotochemical quenching of chlorophyll fluorescence is due to changes in Photosystem II antenna size and stability
    Heiko Lokstein
    Institut für Biologie Pflanzenphysiologie, Humboldt Universitat zu Berlin, Unter den Linden 6 Sitz Philippstr 13, D 10099, Berlin, Germany
    Biochim Biophys Acta 1553:309-19. 2002
    ....
  41. ncbi The Arabidopsis gene YS1 encoding a DYW protein is required for editing of rpoB transcripts and the rapid development of chloroplasts during early growth
    Wenbin Zhou
    National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032 Shanghai, China
    Plant J 58:82-96. 2009
    ..We conclude that the activity of PEP containing RpoB translated from unedited transcripts is insufficient to support rapid chloroplast differentiation...
  42. 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...
  43. ncbi PratA, a periplasmic tetratricopeptide repeat protein involved in biogenesis of photosystem II in Synechocystis sp. PCC 6803
    Birgit Klinkert
    Allgemeine und Molekulare Botanik, Ruhr Universitat Bochum, Germany
    J Biol Chem 279:44639-44. 2004
    ..The periplasmic localization of PratA supports a model that predicts the initial steps of PSII biogenesis to occur at the plasma membrane of cyanobacterial cells...
  44. ncbi Light-induced electron transfer in Arabidopsis cryptochrome-1 correlates with in vivo function
    Anke Zeugner
    Universite Paris VI, Casier 156, Paris, France
    J Biol Chem 280:19437-40. 2005
    ..These data support the possibility that light-induced flavin reduction via the tryptophan chain is the primary step in the signaling pathway of plant cryptochrome...
  45. ncbi Complex evolution of photosynthesis
    Jin Xiong
    Department of Biology, Texas A and M University, College Station, Texas 77843, USA
    Annu Rev Plant Biol 53:503-21. 2002
    ..Further insight into the evolution of photosynthesis will have to rely on additional broader sampling of photosynthesis genes from divergent photosynthetic bacteria...
  46. pmc The thylakoid membrane protein ALB3 associates with the cpSecY-translocase in Arabidopsis thaliana
    Eva Klostermann
    Institut für Biologie III der RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany
    Biochem J 368:777-81. 2002
    ..In addition, an association of ALB3 with the cpSecY complex was demonstrated directly by cross-linking experiments using the chemical cross-linker disuccinimidyl suberate...
  47. ncbi Functional architecture of the major light-harvesting complex from higher plants
    E Formaggio
    Dipartimento Scientifico e Tecnologico, , , Strada Le Grazie 15, I-37174, Verona, Italy
    J Mol Biol 314:1157-66. 2001
    ....
  48. ncbi A novel mechanism of nuclear photosynthesis gene regulation by redox signals from the chloroplast during photosystem stoichiometry adjustment
    T Pfannschmidt
    Institute of General Botany, Department of Plant Physiology, University of Jena, Dornburger Strasse 159, 07743 Jena, Germany
    J Biol Chem 276:36125-30. 2001
    ..Thus, the expression of nuclear-encoded PSI genes is controlled by diverse light quality-dependent redox signals from the plastids during photosystem stoichiometry adjustment...
  49. ncbi The FHY3 and FAR1 genes encode transposase-related proteins involved in regulation of gene expression by the phytochrome A-signaling pathway
    Matthew E Hudson
    Department of Plant and Microbial Biology, University of California, Berkeley 94720, USA
    Plant J 34:453-71. 2003
    ..We propose that FAR1 and FHY3 control the expression of their target genes by a mechanism that has evolved directly from the way that an ancestral, MuDRA-like transposase bound to the TIRs of mobile elements...
  50. ncbi Lipidic sponge phase crystal structure of a photosynthetic reaction center reveals lipids on the protein surface
    Annemarie B Wöhri
    Department of Chemical and Biological Engineering, Molecular Biotechnology, Chalmers University of Technology, SE 405 30 Gothenburg, Sweden
    Biochemistry 48:9831-8. 2009
    ..A 36 A long electron density feature is observed at the interface of transmembrane helices belonging to the H- and M-subunits, probably arising from an unidentified lipid...
  51. ncbi CP43-like chlorophyll binding proteins: structural and evolutionary implications
    James W Murray
    Division of Molecular Biosciences, South Kensington Campus, Imperial College London, SW7 2AZ, UK
    Trends Plant Sci 11:152-8. 2006
    ....
  52. ncbi Phototropin blue-light receptors
    John M Christie
    Plant Science Group, Division of Biochemistry and Molecular Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, Scotland, United Kingdom
    Annu Rev Plant Biol 58:21-45. 2007
    ..Here we summarize the photochemical and biochemical events underlying phototropin activation in addition to the current knowledge of the molecular mechanisms associated with photoreceptor signaling...
  53. ncbi Molecular diversity among marine picophytoplankton as revealed by psbA analyses
    Gil Zeidner
    Department of Biology, Technion Israel Institute of Technology, Haifa 32000, Israel
    Environ Microbiol 5:212-6. 2003
    ..Furthermore, using environmental bacterial artificial chromosome (BAC) libraries, we were able to correlate psbA genes with small subunit rRNAs and, therefore, to confirm their phylogenetic affiliation...
  54. pmc Genome organization and localization of the pufLM genes of the photosynthesis reaction center in phylogenetically diverse marine Alphaproteobacteria
    Silke Pradella
    Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, D 38124 Braunschweig, Germany
    Appl Environ Microbiol 70:3360-9. 2004
    ..The large number and significant size of the linear plasmids found especially in isolates from dinoflagellates might account for the metabolic versatility and presumed symbiotic association with eukaryotic hosts in these bacteria...
  55. pmc Regulation of the distribution of chlorophyll and phycobilin-absorbed excitation energy in cyanobacteria. A structure-based model for the light state transition
    Michael D McConnell
    Department of Biological Sciences, Brock University, St Catharines, Ontario, Canada L2S 3A1
    Plant Physiol 130:1201-12. 2002
    ..We present a model for the state transition in cyanobacteria based on the x-ray structures of PSII, PSI, and allophycocyanin consistent with these results...
  56. ncbi Characterization of high temperature induced stress impairments in thylakoids of rice seedlings
    B Vani
    School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
    Indian J Biochem Biophys 38:220-9. 2001
    ..Thus, our results show that the loss in PSII photochemistry by in vivo heat exposure not only alters the donor side but significantly alters the acceptor side of PSII...
  57. pmc Remarkable diversity of phototrophic purple bacteria in a permanently frozen Antarctic lake
    Elizabeth A Karr
    Department of Microbiology, Southern Illinois University, Carbondale, Illinois 62901 6508, USA
    Appl Environ Microbiol 69:4910-4. 2003
    ..The isolates also contained gas vesicles, buoyancy structures previously unknown in purple nonsulfur bacteria, that may be necessary for these organisms to position themselves at specific depths within the nearly freezing water column...
  58. ncbi The trimeric organisation of photosystem I is not necessary for the iron-stress induced CP43' protein to functionally associate with this reaction centre
    Caroline L Aspinwall
    Department of Biology, University College London, Darwin Building, Gower Street, London WC1E 6BT, UK
    FEBS Lett 574:126-30. 2004
    ..We therefore conclude that the trimeric nature of cyanobacterial PSI is not required for the assembly of the CP43' antenna system under iron-deficient conditions...
  59. pmc Photosynthetic and phylogenetic primers for detection of anoxygenic phototrophs in natural environments
    L A Achenbach
    Department of Microbiology and Center for Systematic Biology, Southern Illinois University, Carbondale, Illinois 62901, USA
    Appl Environ Microbiol 67:2922-6. 2001
    ....
  60. ncbi Thermodynamic investigation into the mechanism of the chlorophyll fluorescence quenching in isolated photosystem II light-harvesting complexes
    Mark Wentworth
    Robert Hill Institute, Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom
    J Biol Chem 278:21845-50. 2003
    ....
  61. pmc Domain structure, oligomeric state, and mutational analysis of PpsR, the Rhodobacter sphaeroides repressor of photosystem gene expression
    M Gomelsky
    Department of Microbiology and Molecular Genetics, University of Texas Medical School, Houston, Texas 77030, USA
    J Bacteriol 182:2253-61. 2000
    ..This model may prove useful for determining the mode of PpsR action...
  62. pmc Chlorophyll a and carotenoid triplet states in light-harvesting complex II of higher plants
    E J Peterman
    Department of Physics and Astronomy, Vrije Universiteit, Amsterdam, The Netherlands
    Biophys J 69:2670-8. 1995
    ..The results are discussed in terms of the crystal structure of light-harvesting complex II...
  63. ncbi Carotenoid-binding sites of the major light-harvesting complex II of higher plants
    R Croce
    Dipartimento Scientifico e Tecnologico, Facoltà di Scienze Matematiche, Fisiche, Naturali, Biotecnologie Vegetali, Universita di Verona, Strada Le Grazie, 37134 Verona, Italia
    J Biol Chem 274:29613-23. 1999
    ..Whereas xanthophylls in the L1 and L2 sites are active in photoprotection through chlorophyll-triplet quenching, neoxanthin seems to act mainly in (1)O(2)(*) scavenging...
  64. pmc A chimeric photoreceptor gene, NEOCHROME, has arisen twice during plant evolution
    Noriyuki Suetsugu
    Division of Photobiology, National Institute for Basic Biology, Okazaki 444 8585, Japan
    Proc Natl Acad Sci U S A 102:13705-9. 2005
    ..However, the fern and algal genes seem to have arisen independently in evolution, thus providing an intriguing example of convergent evolution...
  65. pmc Translation of the chloroplast psbC mRNA is controlled by interactions between its 5' leader and the nuclear loci TBC1 and TBC3 in Chlamydomonas reinhardtii
    W Zerges
    Department of Molecular Biology, University of Geneva, Switzerland
    Mol Cell Biol 17:3440-8. 1997
    ..These data demonstrate that sequences located in the middle of the psbC 5' UTR, TBC1, and TBC3 functionally interact to control the translation of the psbC mRNA...
  66. ncbi Marine ecosystems: bacterial photosynthesis genes in a virus
    Nicholas H Mann
    Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK
    Nature 424:741. 2003
  67. ncbi Photoreceptor regulation of CONSTANS protein in photoperiodic flowering
    Federico Valverde
    Max Planck Institute for Plant Breeding, Carl von Linne Weg 10, D 50829 Cologne, Germany
    Science 303:1003-6. 2004
    ..This layer of regulation refines the circadian rhythm in CO messenger RNA and is central to the mechanism by which day length controls flowering...
  68. pmc The ctpA gene encodes the C-terminal processing protease for the D1 protein of the photosystem II reaction center complex
    P R Anbudurai
    Department of Biology, Washington University, St Louis, MO 63130
    Proc Natl Acad Sci U S A 91:8082-6. 1994
    ..Interestingly, the CtpA protein shows significant sequence similarity to the interphotoreceptor retinoid-binding proteins in the bovine, human, and insect eye systems...
  69. ncbi Characterization of the single psbA gene of Prochlorococcus marinus CCMP 1375 (Prochlorophyta)
    W R Hess
    Humboldt University, Department of Biology, Berlin, Germany
    Plant Mol Biol 27:1189-96. 1995
    ..Phylogenetic trees suggested the D1-1 iso-form from Synechococcus PCC 7942 as the next related D1 protein and place P. marinus separately from Prochlorothrix hollandica among the cyanobacteria...
  70. pmc Efficient operation of NAD(P)H dehydrogenase requires supercomplex formation with photosystem I via minor LHCI in Arabidopsis
    Lianwei Peng
    Department of Botany, Graduate School of Science, Kyoto University, Sakyo ku, Kyoto, Japan
    Plant Cell 21:3623-40. 2009
    ..We conclude that chloroplast NDH became equipped with the novel subcomplexes and became associated with PSI during the evolution of land plants, and this process may have facilitated the efficient operation of NDH...
  71. pmc Role of the PsbI protein in photosystem II assembly and repair in the cyanobacterium Synechocystis sp. PCC 6803
    Marika Dobakova
    Institute of Microbiology, Academy of Sciences, 37981 Trebon, Czech Republic
    Plant Physiol 145:1681-91. 2007
    ..Overall, our results suggest that PsbI is an early assembly partner for D1 and that it plays a functional role in stabilizing the binding of CP43 in the PSII holoenzyme...
  72. ncbi A SecY homologue is involved in chloroplast-encoded D1 protein biogenesis
    L Zhang
    Department of Biology, University of Turku, FIN-20014 Turku, Finland
    J Biol Chem 276:37809-14. 2001
    ....
  73. pmc Nearest-neighbor analysis of higher-plant photosystem I holocomplex
    S Jansson
    Department of Plant Biology, Royal Veterinary and Agricultural University, Frederiksberg C, Denmark
    Plant Physiol 112:409-20. 1996
    ..We suggest which PSI subunit corresponds to each membrane-spanning helix in the cyanobacterial PSI structure, and present a model for higher-plant PSI...
  74. ncbi Effect of detergent concentration on the thermal stability of a membrane protein: The case study of bacterial reaction center solubilized by N,N-dimethyldodecylamine-N-oxide
    Gerardo Palazzo
    Dipartimento di Chimica and CSGI, Universita di Bari, I 70126 Bari, Italy
    Biochim Biophys Acta 1804:137-46. 2010
    ..The aggregate final sizes formed at different temperatures indicate the presence of an even number of proteins suggesting that these clusters are formed by aggregation of dimers...
  75. pmc Modeling binding kinetics at the Q(A) site in bacterial reaction centers
    Jennifer Madeo
    Physics Department J 419 City College of New York 138th Street and Convent Avenue, New York, New York 10031, USA
    Biochemistry 44:10994-1004. 2005
    ..Thus, the slow semiquinone dissociation may not indicate significant thermodynamic stabilization of the reduced species in the Q(A) site...
  76. ncbi Organization and expression of photosynthesis genes and operons in anoxygenic photosynthetic proteobacteria
    Sylviane Liotenberg
    CNRS, Centre de Genetique Moleculaire, UPR 2167, Gif sur Yvette, F 91198, France
    Environ Microbiol 10:2267-76. 2008
    ....
  77. ncbi Low-temperature interquinone electron transfer in photosynthetic reaction centers from Rhodobacter sphaeroides and Blastochloris viridis: characterization of Q(B)- states by high-frequency electron paramagnetic resonance (EPR) and electron-nuclear double
    Lisa M Utschig
    Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
    Biochemistry 44:14131-42. 2005
    ..These results reveal a remarkably enforced local protein environment for Q(B) in its reduced semiquinone state and suggest that the conformational change that controls reactivity resides beyond the Q(B) local environment...
  78. ncbi An ab initio force field for the cofactors of bacterial photosynthesis
    Matteo Ceccarelli
    CECAM, Centre Européen de Calcul Atomique et Moléculaire, Ecole Normale Superieure de Lyon, 46 allee d Italie, 69364 Lyon, France
    J Comput Chem 24:129-42. 2003
    ..For this reason it might also be helpful to understand vibrational spectroscopy results obtained on reaction center proteins...
  79. pmc Modification of quinone electrochemistry by the proteins in the biological electron transfer chains: examples from photosynthetic reaction centers
    M R Gunner
    Physics Department, The City College of New York, New York, NY 10031, USA
    J Bioenerg Biomembr 40:509-19. 2008
    ..Evidence for the protein sequestering anionic compounds by slowing both on and off rates as well as by binding the anion more tightly is reviewed...
  80. ncbi Redox potential of quinones in photosynthetic reaction centers from Rhodobacter sphaeroides: dependence on protonation of Glu-L212 and Asp-L213
    Hiroshi Ishikita
    Institute of Chemistry, Department of Biology, Chemistry, and Pharmacy, Free University of Berlin, Takustrasse 6, D 14195 Berlin, Germany
    Biochemistry 42:3882-92. 2003
    ....
  81. pmc The measured and calculated affinity of methyl- and methoxy-substituted benzoquinones for the Q(A) site of bacterial reaction centers
    Zhong Zheng
    Department of Physics, City College of New York, New York, New York 10031, USA
    Proteins 78:2638-54. 2010
    ..Calculations using a solvent-accessible surface area-dependent implicit van der Waals interaction smoothed out small clashes, providing a better match to experiment with a RMSD of 0.77 and a slope of 0.97...
  82. pmc Structure of the reaction center from Rhodobacter sphaeroides R-26 and 2.4.1: symmetry relations and sequence comparisons between different species
    H Komiya
    University of California, Los Angeles 90024
    Proc Natl Acad Sci U S A 85:9012-6. 1988
    ..A method is presented for characterizing the exposure of alpha-helices to the membrane based on the periodicity of conserved residues. This method may prove useful for modeling the three-dimensional structures of membrane proteins...
  83. ncbi Energetics of quinone-dependent electron and proton transfers in Rhodobacter sphaeroides photosynthetic reaction centers
    Zhenyu Zhu
    Physics Department J 419, City College of New York, 138th Street and Convent Avenue, New York, New York 10031, USA
    Biochemistry 44:82-96. 2005
    ..The final product QH(2) is higher in energy at the proximal Q(B) site than in solution; therefore, it binds poorly, favoring release. In contrast, QH(2) binds more tightly than Q at the distal Q(B) site...
  84. ncbi Tuning electron transfer by ester-group of chlorophylls in bacterial photosynthetic reaction center
    Hiroshi Ishikita
    Institute of Chemistry, Crystallography, Department of Biology, Chemistry, and Pharmacy, Free University of Berlin, Takustrasse 6, D 14195 Berlin, Germany
    FEBS Lett 579:712-6. 2005
    ..This can be traced back to different orientations of the B(A) ester-group. This tuning ability of chlorophyll redox potentials modulates the electron transfer from SP* to B(A)...
  85. ncbi Structure of the photosynthetic reaction centre from Rhodobacter sphaeroides at 2.65 A resolution: cofactors and protein-cofactor interactions
    U Ermler
    Max Planck Institut fur Biophysik, Frankfurt Main, Germany
    Structure 2:925-36. 1994
    ..There are discrepancies between these structures, however, and to resolve these we have determined the structure to higher resolution than before, using a new crystal form...
  86. ncbi Variation of Ser-L223 hydrogen bonding with the QB redox state in reaction centers from Rhodobacter sphaeroides
    Hiroshi Ishikita
    Institute of Chemistry, Department of Biology, Chemistry, and Pharmacy, Free University of Berlin, Takustrasse 6, D 14195 Berlin, Germany
    J Am Chem Soc 126:8059-64. 2004
    ..Together with the calculated redox potential of the quinones, this H-bond formation could play a key role in conformational gating for the ET process from Q(A) to Q(B)...
  87. pmc How photosynthetic reaction centers control oxidation power in chlorophyll pairs P680, P700, and P870
    Hiroshi Ishikita
    Institute of Chemistry and Biochemistry, Free University Berlin, Takustrasse 6, D 14195 Berlin, Germany
    Proc Natl Acad Sci U S A 103:9855-60. 2006
    ....
  88. ncbi Xanthophyll binding sites of the CP29 (Lhcb4) subunit of higher plant photosystem II investigated by domain swapping and mutation analysis
    Mirko Gastaldelli
    Dipartimento Scientifico e Tecnologico, Universita di Verona, Strada Le Grazie, 15 37134 Verona Italy
    J Biol Chem 278:19190-8. 2003
    ....
  89. pmc Biogenesis, assembly and turnover of photosystem II units
    Elena Baena-Gonzalez
    Department of Biology, Plant Physiology and Molecular Biology, University of Turku, FIN 20014 Turku, Finland
    Philos Trans R Soc Lond B Biol Sci 357:1451-9; discussion 1459-60. 2002
    ....
  90. ncbi Rapid, ATP-dependent degradation of a truncated D1 protein in the chloroplast
    S Preiss
    , , Halle-Saale, Germany
    Eur J Biochem 268:4562-9. 2001
    ..The possible involvement of proteases similar to those removing abnormal proteins in prokaryotic organisms is discussed on the basis of proteases recently identified in chloroplasts...
  91. ncbi The roles of specific xanthophylls in light utilization
    Ljudmila Kalituho
    Institute of Plant Biochemistry, Heinrich Heine University Dusseldorf, Universitatsstrasse 1, 40225, Dusseldorf, Germany
    Planta 225:423-39. 2007
    ..Thus, it can be concluded from our work that neither Vx nor Zx is able to fulfil the essential photoprotective function at Lut-binding sites under in vivo conditions...
  92. ncbi Light signal transduction in higher plants
    Meng Chen
    Plant Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, California 92037, USA
    Annu Rev Genet 38:87-117. 2004
    ....
  93. pmc Light intensity regulation of cab gene transcription is signaled by the redox state of the plastoquinone pool
    J M Escoubas
    Oceanographic and Atmospheric Sciences Division, Brookhaven National Laboratory, Upton, NY 11973, USA
    Proc Natl Acad Sci U S A 92:10237-41. 1995
    ....
  94. pmc Arabidopsis FHY3 defines a key phytochrome A signaling component directly interacting with its homologous partner FAR1
    Haiyang Wang
    Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06520 8104, USA
    EMBO J 21:1339-49. 2002
    ..Further, we demonstrate that FHY3 and FAR1 are capable of homo- and hetero-interaction. Our data indicate that FHY3, together with FAR1, defines a key module in a signaling network underlying phyA-mediated FR light responses...
  95. ncbi Acclimation of Arabidopsis thaliana to the light environment: the existence of separate low light and high light responses
    S Bailey
    Robert Hill Institute, Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, UK
    Planta 213:794-801. 2001
    ....
  96. pmc A nuclear mutation in maize blocks the processing and translation of several chloroplast mRNAs and provides evidence for the differential translation of alternative mRNA forms
    A Barkan
    Institute of Molecular Biology, University of Oregon, Eugene 97403
    EMBO J 13:3170-81. 1994
    ....
  97. ncbi Light-induced structural changes in a photosynthetic reaction center caught by Laue diffraction
    Annemarie B Wöhri
    Department of Chemical and Biological Engineering, Chalmers University of Technology, Box 462, SE 40530 Goteborg, Sweden
    Science 328:630-3. 2010
    ..Free energy calculations suggest that this movement results from the deprotonation of this conserved tyrosine residue and provides a mechanism for stabilizing the primary charge separation reactions of photosynthesis...
  98. ncbi Molecular cloning and characterization of the ctpA gene encoding a carboxyl-terminal processing protease. Analysis of a spontaneous photosystem II-deficient mutant strain of the cyanobacterium Synechocystis sp. PCC 6803
    S V Shestakov
    Department of Biology, Washington University, St Louis, Missouri 63130
    J Biol Chem 269:19354-9. 1994
    ..We suggest that the cyanobacterial protein encoded by ORF427 is a similar processing protease and name the gene ctpA (carboxyl-terminal processing protease)...
  99. ncbi Strong effects of an individual water molecule on the rate of light-driven charge separation in the Rhodobacter sphaeroides reaction center
    Jane A Potter
    Department of Biochemistry, School of Medical Sciences, University of Bristol, University Walk, Bristol, BS8 1TD, United Kingdom
    J Biol Chem 280:27155-64. 2005
    ..Possible functions of this water molecule are discussed, including a switching role in which the redox potential of the B(A) acceptor is rapidly modulated in response to oxidation of the primary electron donor...
  100. pmc Induced conformational changes upon Cd2+ binding at photosynthetic reaction centers
    Hiroshi Ishikita
    Institute of Chemistry and Biochemistry, Free University of Berlin, Takustrasse 6, D 14195 Berlin, Germany
    Proc Natl Acad Sci U S A 102:16215-20. 2005
    ....
  101. pmc Self diffusion and spectral modifications of a membrane protein, the Rubrivivax gelatinosus LH2 complex, incorporated into a monoolein cubic phase
    N Tsapis
    , UMR 8550 CNRS, 75231 Paris Cedex 05, France
    Biophys J 81:1613-23. 2001
    ..Despite these significant perturbations, the protein seems to keep an oligomeric structure. The relevance of these observations for the possible crystallization of this protein in the cubic phase is discussed...

Research Grants30

  1. PROTEIN SEQUENCING FACILITY
    Francis Millett; Fiscal Year: 1990
    ..6) The mechanism of cation transport by gramicidin A is being studied by the total synthesis of peptide analogues. (7) The effect of toxins on blood clotting and the regulation of blood flow is being studied...
  2. Structural Basis of Proton Transfer Pathways
    Marianne Schiffer; Fiscal Year: 2006
    ..abstract_text> ..
  3. CRYSTALLIZATION & CHARACTERIZATION OF MEMBRANE PROTEINS
    James Allen; Fiscal Year: 1993
    ..The second goal is to use the empirical methodologies that have been proven successful in growing crystals of the RC to crystallize other membrane proteins of bacterial systems as well as other biological systems, such as plants...
  4. STRUCTURE & FUNCTION OF PHOTOSYNTHETIC REACTION CENTERS
    George Feher; Fiscal Year: 2003
    ..abstract_text> ..
  5. HemeCu Oxidase: Calculated Electron and Proton Transfers
    MARILYN GUNNER; Fiscal Year: 2005
    ..The effects of mutation will be predicted. Protein structural motifs that stabilize charge transfers deep inside membrane proteins and couple these electron transfers to transmembrane proton transfer will be identified. ..
  6. A BACTERIAL FACTORY FOR PRODUCTION OF MEMBRANE PROTEINS
    PHILIP LAIBLE; Fiscal Year: 2004
    ....
  7. 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. ..
  8. Assembly and Functions of Photosynthetic Water Oxidases
    G Dismukes; Fiscal Year: 2006
    ..abstract_text> ..
  9. Singlet Oxygen Signaling
    Krishna Niyogi; Fiscal Year: 2007
    ..This investigation will help illuminate studies of singlet oxygen biology in other organisms and provide fundamental knowledge about how eukaryotic cells sense and respond to singlet oxygen. ..
  10. EPR Studies of Biological PCET Elements
    R Britt; Fiscal Year: 2008
    ....
  11. ANTIOXIDANT METABOLISM IN CHLAMYDOMONAS
    Krishna Niyogi; Fiscal Year: 2008
    ..abstract_text> ..
  12. Reverse genetics of Chlamydomonas using TILLING
    Krishna Niyogi; Fiscal Year: 2008
    ..This project will generate a resource that will enable the determination of gene function for many genes that have been discovered by sequencing the Chlamydomonas genome. [unreadable] [unreadable] [unreadable]..
  13. STRUCTURE AND FUNCTION OF CAROTENOIDS
    Harry Frank; Fiscal Year: 2008
    ..Several preliminary studies have already been carried out by us in support of the methods we propose to employ. ..
  14. PULSED EPR STUDIES OF BIOLOGICAL MANGANESE CLUSTERS
    R David Britt; Fiscal Year: 2010
    ....
  15. SHY2/IAA3 in auxin regulation of plant development
    Jason Reed; Fiscal Year: 2006
    ..These experiments will help us understand how auxin regulates development in a model system, and will in the future allow manipulation of morphology of crop plants in ways beneficial to human health. ..
  16. EPR STUDIES OF METAL/NUCLEI ACID INTERACTIONS
    R Britt; Fiscal Year: 2003
    ..abstract_text> ..
  17. EPR & Optical Studies of Photosynthetic Water Oxidation
    RICHARD DEBUS; Fiscal Year: 2005
    ..abstract_text> ..
  18. Minimized Streptokinase
    William Coleman; Fiscal Year: 2002
    ..Successful modification of streptokinase will also provide a model for engineering other therapeutic proteins. ..
  19. Alkynyliodonium Salts and Derived Diyls in Synthesis
    Ken Feldman; Fiscal Year: 2009
    ..abstract_text> ..
  20. SPECTROSCOPIC STUDIES OF LIGHT-DRIVEN ELECTRON TRANSFER
    BRIDGETTE ANNE BARRY; Fiscal Year: 2010
    ..This specific aim will serve to elucidate the role of primary, secondary, and tertiary interactions in a structurally defined, tractable model system. ..
  21. FTIR Studies of Photosynthetic Oxygen Evolution
    RICHARD DEBUS; Fiscal Year: 2009
    ..Its advantages derive from its ability to be stepped through its catalytic cycle with single flashes of light, thereby facilitating kinetic studies of reaction cycle intermediates with high time resolution. ..
  22. MECHANISM OF VISUAL EXCITATION
    Thomas Ebrey; Fiscal Year: 2002
    ....
  23. VIBRATIONAL STUDIES OF ENERGY TRANSDUCING PROTEINS
    DAVID BOCIAN; Fiscal Year: 2003
    ..abstract_text> ..
  24. Multiscale studies of HIV infection and treatment
    Tom Chou; Fiscal Year: 2008
    ..The proposed research represents a systematic, quantitative approach to the basic study of HIV-receptor/coreceptor interactions, and will potentially aid in optimizing drug treatments and gene therapies. ..
  25. RAMAN STUDIES OF PORPHYRINS/PROTEIN MAQUETTES/PROTEINS
    DAVID BOCIAN; Fiscal Year: 2003
    ..The goal is to elucidate the structure of the cofactors in the synthetic proteins and explore how their redox and electronic properties are influenced by the protein matrix. ..
  26. FUNCTIONAL ANALYSIS OF MAIZE GROUP-1 POLLEN ALLERGENS
    Daniel Cosgrove; Fiscal Year: 2004
    ..Finally, we will leverage the insights gained from analysis of Zea ml to study the function of group-Il and group-Ill grass pollen allergens, which show significant sequence similarity with the carboxy terminus of group-I allergens. ..
  27. Inhibitor-Resistant Thermostable DNA Polymerases for PCR
    William Coleman; Fiscal Year: 2004
    ..By creating application-specific polymerase variants engineered to resist inhibitors, this technology will provide PCR users with cost-effective and time-saving reagents that will improve the reliability of their assays. ..
  28. MOLECULAR MECHANISMS CONTROLLING BACTERIORHODOPSIN
    Thomas Ebrey; Fiscal Year: 2004
    ....
  29. 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. ..
  30. 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. ..