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Fast Electron Transfer Kinetics in Photosystem I from Transient EPR-Spectroscopy at Room Temperature

  • Christian H. Bock
  • Klaus Brettel
  • Arthur J. Van Der Est
  • Ina Sieckmann
  • Dietmar Stehlik

Abstract

Following light excitation of the donor P700 and primary charge separation electron transfer in photosystem I (PSI) is believed to proceed via a chain of membrane bound acceptors termed Ao, A1, FX, FA, FB /1,2/. Transient EPR-spectroscopy of spin polarized signals provides a useful tool to study the kinetics of these processes provided the transfer times fall within the time resolution presently approaching the physical limit around 10 ns.

Keywords

Sodium Ascorbate Intact Sample Iron Sulfur Center 100kHz Field Modulation Early Spectrum 
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References

  1. 1.
    Mathis, P. and Rutherford, A. W. (1987) in: Photosynthesis (Amesz, J. ed) pp. 63–96, Elsevier, AmsterdamCrossRefGoogle Scholar
  2. 2.
    Golbeck, J. H. (1987) Biochim. Biophys. Acta 895, 167–204PubMedCrossRefGoogle Scholar
  3. 3.
    Bock, C. H., van der Est A. J., Brettel, K. and Stehlik, D. (1989) FEBS Lett. 247, 91–96CrossRefGoogle Scholar
  4. 4.
    Brettel, K. (1988) FEBS Lett. 239, 93–98CrossRefGoogle Scholar
  5. 5.
    Brettel, K. (1989) Biochim. Biophys. Acta, in print, see also contribution in these proceedingsGoogle Scholar
  6. 6.
    Stehlik, D., Bock, C. H., Thurnauer, M. C. (1989) in: Advanced EPR in Biology and Biochemistry (Hoff, A. J. ed) Chap. 12, Elsevier, AmsterdamGoogle Scholar
  7. 7.
    Stehlik, D., Bock, C. H., Petersen, J. (1989) J. Phys. Chem. 93, 1612–1619CrossRefGoogle Scholar
  8. 8.
    Thurnauer, M. C., Rutherford, A. W., Norris, J. R. (1982), Biochim. Biophys. Acta 682, 332–338CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Christian H. Bock
    • 1
  • Klaus Brettel
    • 2
  • Arthur J. Van Der Est
    • 1
  • Ina Sieckmann
    • 1
  • Dietmar Stehlik
    • 1
  1. 1.Fachbereich PhysikFU BerlinBerlin 33Germany
  2. 2.Max Volmer InstitutTU BerlinBerlin 12Germany

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