Arvi Freiberg

Summary

Affiliation: University of Tartu
Country: Estonia

Publications

  1. doi request reprint A comparative spectroscopic and kinetic study of photoexcitations in detergent-isolated and membrane-embedded LH2 light-harvesting complexes
    Arvi Freiberg
    Institute of Physics, University of Tartu, Tartu, Estonia
    Biochim Biophys Acta 1817:1471-82. 2012
  2. pmc Structural implications of hydrogen-bond energetics in membrane proteins revealed by high-pressure spectroscopy
    Arvi Freiberg
    Institute of Physics, University of Tartu, Estonia
    Biophys J 103:2352-60. 2012
  3. ncbi request reprint The long-wavelength limit of plant photosynthesis
    Hugo Pettai
    Institute of Molecular and Cell Biology, University of Tartu, Riia 23, Tartu 51010, Estonia
    FEBS Lett 579:4017-9. 2005
  4. doi request reprint Excitons in intact cells of photosynthetic bacteria
    Arvi Freiberg
    Institute of Physics, University of Tartu, Riia 142, Tartu 51014, Estonia
    J Phys Chem B 117:11007-14. 2013
  5. ncbi request reprint Band structure and local dynamics of excitons in bacterial light-harvesting complexes revealed by spectrally selective spectroscopy
    Margus Rätsep
    Institute of Physics, University of Tartu, Riia 142, Tartu, 51014, Estonia
    Photosynth Res 86:37-48. 2005
  6. doi request reprint Stability of integral membrane proteins under high hydrostatic pressure: the LH2 and LH3 antenna pigment-protein complexes from photosynthetic bacteria
    Liina Kangur
    Institute of Physics, University of Tartu, Tartu, Estonia
    J Phys Chem B 112:7948-55. 2008
  7. doi request reprint Demonstration and interpretation of significant asymmetry in the low-resolution and high-resolution Q(y) fluorescence and absorption spectra of bacteriochlorophyll a
    Margus Rätsep
    Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia
    J Chem Phys 134:024506. 2011
  8. doi request reprint Fluorescence micro-spectroscopy study of individual photosynthetic membrane vesicles and light-harvesting complexes
    Kristjan Leiger
    Institute of Physics, University of Tartu, Riia 142, Tartu 51014, Estonia
    J Phys Chem B 117:9315-26. 2013
  9. ncbi request reprint Pressure-induced spectral changes for the special-pair radical cation of the bacterial photosynthetic reaction center
    Kristjan Leiger
    Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia
    J Chem Phys 126:215102. 2007
  10. ncbi request reprint Excitation wavelength-dependent electron-phonon and electron-vibrational coupling in the CP29 antenna complex of green plants
    Margus Rätsep
    Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia
    J Phys Chem B 112:110-8. 2008

Collaborators

Detail Information

Publications13

  1. doi request reprint A comparative spectroscopic and kinetic study of photoexcitations in detergent-isolated and membrane-embedded LH2 light-harvesting complexes
    Arvi Freiberg
    Institute of Physics, University of Tartu, Tartu, Estonia
    Biochim Biophys Acta 1817:1471-82. 2012
    ..This article is part of a Special Issue entitled: Photosynthesis Research for Sustainability: from Natural to Artificial...
  2. pmc Structural implications of hydrogen-bond energetics in membrane proteins revealed by high-pressure spectroscopy
    Arvi Freiberg
    Institute of Physics, University of Tartu, Estonia
    Biophys J 103:2352-60. 2012
    ..This study thus provides important insights into the design principles of natural photosynthetic complexes...
  3. ncbi request reprint The long-wavelength limit of plant photosynthesis
    Hugo Pettai
    Institute of Molecular and Cell Biology, University of Tartu, Riia 23, Tartu 51010, Estonia
    FEBS Lett 579:4017-9. 2005
    ..We conclude that extreme long-wavelength chlorophylls may be present in the intact photosystem II antenna system, similarly to photosystem I...
  4. doi request reprint Excitons in intact cells of photosynthetic bacteria
    Arvi Freiberg
    Institute of Physics, University of Tartu, Riia 142, Tartu 51014, Estonia
    J Phys Chem B 117:11007-14. 2013
    ..The results provide conclusive evidence that excitons are indeed one of the key elements contributing to the energetic and dynamic properties of photosynthetic organisms. ..
  5. ncbi request reprint Band structure and local dynamics of excitons in bacterial light-harvesting complexes revealed by spectrally selective spectroscopy
    Margus Rätsep
    Institute of Physics, University of Tartu, Riia 142, Tartu, 51014, Estonia
    Photosynth Res 86:37-48. 2005
    ..Off-diagonal (structural) disorder may be responsible for this exciton band structure. Our data also imply that pair-wise inter-chlorophyll couplings determine the resonance fluorescence lineshape of excitonic polarons...
  6. doi request reprint Stability of integral membrane proteins under high hydrostatic pressure: the LH2 and LH3 antenna pigment-protein complexes from photosynthetic bacteria
    Liina Kangur
    Institute of Physics, University of Tartu, Tartu, Estonia
    J Phys Chem B 112:7948-55. 2008
    ..The pigmented photosynthetic antenna complexes thus constitute a suitable model system for studying in detail the stability of integral membrane proteins...
  7. doi request reprint Demonstration and interpretation of significant asymmetry in the low-resolution and high-resolution Q(y) fluorescence and absorption spectra of bacteriochlorophyll a
    Margus Rätsep
    Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia
    J Chem Phys 134:024506. 2011
    ..Most other semi-empirical, density-functional, and ab initio computational methods severely overestimate the electron-vibrational coupling and its asymmetry. It is shown that the asymmetry arises primarily through Duschinsky rotation...
  8. doi request reprint Fluorescence micro-spectroscopy study of individual photosynthetic membrane vesicles and light-harvesting complexes
    Kristjan Leiger
    Institute of Physics, University of Tartu, Riia 142, Tartu 51014, Estonia
    J Phys Chem B 117:9315-26. 2013
    ..These alterations, which mostly concern peripheral antenna complexes, were shown to be due to photo-oxidation of various numbers of BChl molecules in the B850 compartment of LH2...
  9. ncbi request reprint Pressure-induced spectral changes for the special-pair radical cation of the bacterial photosynthetic reaction center
    Kristjan Leiger
    Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia
    J Chem Phys 126:215102. 2007
    ....
  10. ncbi request reprint Excitation wavelength-dependent electron-phonon and electron-vibrational coupling in the CP29 antenna complex of green plants
    Margus Rätsep
    Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia
    J Phys Chem B 112:110-8. 2008
    ..048. An integral value of vibrational coupling strengths Svib=0.36+/-0.05 was determined, which is similar to that observed earlier for the trimeric LHC II complex...
  11. doi request reprint Davydov splitting of excitons in cyclic bacteriochlorophyll a nanoaggregates of bacterial light-harvesting complexes between 4.5 and 263 K
    Mihkel Pajusalu
    Institute of Physics, Tartu University, Riia 142, Tartu 51014, Estonia
    Chemphyschem 12:634-44. 2011
    ....
  12. ncbi request reprint Photosynthetic activity of far-red light in green plants
    Hugo Pettai
    Institute of Molecular and Cell Biology, University of Tartu, Riia Street 23, Tartu 51010, Estonia
    Biochim Biophys Acta 1708:311-21. 2005
    ..The similarity of the result for sunflower and bean proves that both the extreme long-wavelength oxygen evolution and the local quantum yield maximum are general properties of the plants...
  13. ncbi request reprint Mirror symmetry and vibrational structure in optical spectra of chlorophyll a
    Margus Rätsep
    Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia
    J Chem Phys 130:194501. 2009
    ..The basic experimental findings have been qualitatively supported by semiempirical quantum chemical calculations...