1. Department
of Physical Biochemistry, Max Planck Institute of Molecular Physiology,
Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
2. Howard Hughes Medical Institute
and Department of Molecular Biology and Center for Computational and
Integrative Biology, Simches Research Center, Massachusetts General Hospital, 185 Cambridge Street, Boston, Massachusetts
02114, United States
3. Department
for Chemistry, University of Basel, St.
Johanns-Ring 19, 4056, Basel,
Switzerland