The Mechanism of H2O2 Production by the S2 State of the Oxygen-Evolving Complex

  • Peter L. Fine
  • Wayne D. Frasch


Hydrogen peroxide is known to be an efficient electron donor to the light reactions of photosystem II after the manganese has been removed from the oxygen-evolving complex (OEC) (1). This reaction, which oxidizes H2O2 to O2, is mediated by aqueous Mn2+ and can therefore be inhibited by EDTA (2). The functional OEC can also catalyze the oxidation of H2O2 to O2 by the two electron reduction of the S1 or S2 states which were generated by flashes of light (3).


H202 Production Water Oxidation Light Reaction Reaction Center Complex Single Flash 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Inoue, H. and Nishimura, M. (1971) Plant Cell Physiol., 739–747.Google Scholar
  2. 2.
    Velthuys, B. R. (1982) in, The Oxygen-Evolving System of Photosynthesis, Inoue, Y. et al., eds., Acedemic Press, New York, pp. 83–90.Google Scholar
  3. 3.
    Velthuys, B. R. and Kok, B. (1978) Biochim. Biophys. Acta 502, 211–221.PubMedCrossRefGoogle Scholar
  4. 4.
    Frasch, W. D. and Mei, R. (1987) Biochim. Biophys. Acta 891, 8–14.PubMedCrossRefGoogle Scholar
  5. 5.
    Sandusky, P. O. and Yocum, C. F. (1988) Biochim. Biophys. Acta 936, 149–156.CrossRefGoogle Scholar
  6. 6.
    Berg, S. P. and Seibert, M. (1987) Photosynth. Res. 13, 3–17.CrossRefGoogle Scholar
  7. 7.
    Frasch, W. D., Mei, R. and Sanders, M. A. (1988) Biochemistry 27, 3715–3719.CrossRefGoogle Scholar
  8. 8.
    Mano, J., Takahashi, M. and Asada, K. (1987) Biochemistry 26, 2495–2501.CrossRefGoogle Scholar
  9. 9.
    Schroder, W. and Akerlund, H. (1986) Biochim. Biophys. Acta 848, 359–363.CrossRefGoogle Scholar
  10. 10.
    Wydrzynski, T., Angstrom, J. and Vanngard, T. (1989) Biochim. Biophys. Acta 973, 23–28.CrossRefGoogle Scholar
  11. 11.
    Ghanotakis, D. and Yocum, C. F. (1986) FEBS Lett. 197, 244–248.Google Scholar
  12. 12.
    Velthuys, B. R. (1975) Biochim. Biophys. Acta 396, 392–401.PubMedCrossRefGoogle Scholar
  13. 13.
    Frasch, W. D. and Cheniae, G. M. (1980) Plant Physiol. 65, 735–745.PubMedCrossRefGoogle Scholar
  14. 14.
    Homann, P. H. (1988) Biochim. Biophys. Acta 934, 1–13.CrossRefGoogle Scholar
  15. 15.
    Babcock, G. T. (1987) in, New Comprehensive Biochemistry, J. Amesz, ed., Elsevier, Amsterdam, 15, 125–158.Google Scholar
  16. 16.
    Saphon, S. and Crofts, A. R. (1977) Z. Naturforsch. 32c, 617–676.Google Scholar
  17. 17.
    Critchley, C, Bianu, I. C., Govindjee, and Gutowsky, H. S. (1982) Biochim. Biophys. Acta 682, 436–445.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Peter L. Fine
    • 1
  • Wayne D. Frasch
    • 1
  1. 1.The Center for Early Events in Photosynthesis, Department of BotanyArizona State UniversityTempeUSA

Personalised recommendations