Affiliation: | 1. Department for NMR‐based Structural Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 G?ttingen (Germany), Fax: (+49)?551‐201‐2202 http://www.mpibpc.mpg.de/english/research/ags/lange/;2. Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115 (USA);3. Ionovation GmbH, Westerbreite 7, 49084 Osnabrück (Germany) |