Affiliation: | 1. Department of Organic Chemistry/Cellular Chemistry, University of Konstanz, Universit?tsstrasse 10, 78464 Konstanz (Germany);2. Institute of Molecular Biology and Biophysics, ETH Zürich, Schafmattstrasse 20, 8093 Zürich (Switzerland);3. Laboratory ofBiomolecular Research, Paul Scherrer Institute, OFLC 110, 5232 Villigen (Switzerland) |