Institution: | a Institute for Medical Physics and Biophysics, Charité-Universitätsmedizin, D-10098 Berlin, Schumann Str. 21/22, Germany b Max-Volmer-Laboratory for Biophysical Chemistry and Biochemistry, Institute for Chemistry, Technical University Berlin, D-10623 Berlin, Strasse des 17. Juni 135, Germany c Institute of Plant Biology, Biological Research Center, H-6701 Szeged, P. O. Box 521, Hungary |