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. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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

Collaborators

Detail Information

Publications12

  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. 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...
  5. 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...
  6. 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...
  7. 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
    ....
  8. 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...
  9. 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
    ....
  10. 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. ..
  11. 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...
  12. 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...