1. Institute
of Physical Chemistry, University of Goettingen, Tammannstraße 6, D-37077 Göttingen, Germany
2. Department
of Molecular Enzymology, Albrecht-von-Haller-Institute for Plant Sciences,
and Göttingen Center for Molecular Biosciences, University of Goettingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany