Dipolar relaxation enhancement in inhomogeneous systems. Application to the oxygen evolving complex of plant photosynthesis.

  • R. G. Evelo
  • A. J. Hoff
Conference paper


In two recent papers [1,2] we have demonstrated that information can be gleaned on the oxidation states of the Mn cluster of the oxygen evolving complex (OEC) of plants by carefully measuring the spin-lattice relaxation curves of a stable, tyrosyl radical, D, which is normally presented in reaction centers of photosystem II in photosynthetically active preparations.


  1. [1]
    De Groot, A. Plijter, J.J., Evelo, R. Babcock, G.T. and Hoff, A.J. (1986) Biochim.. Acta 848, 8–15.CrossRefGoogle Scholar
  2. [2]
    Evelo, R. G., Styring, S., Rutherford, A.W. and Hoff, A. J. (1989) Biochim. Biophys. Acta 973, 428–442.CrossRefGoogle Scholar
  3. [3]
    Solomon, I. (1955) Phys. Rev. 99, 559–565.ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • R. G. Evelo
    • 1
  • A. J. Hoff
    • 1
  1. 1.Department of BiophysicsHuygens Laboratoroy of the State UniversityLeidenThe Netherlands

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