Affiliation: | 1. Institute of Organic Chemistry and Chemical Biology, Center for Biomolecular Magnetic Resonance (BMRZ), Johann Wolfgang Goethe‐Universit?t, 60438 Frankfurt (Germany), Fax: (+49)?69‐798‐29515;2. Institute for Biophysical Chemistry, Center for Biomolecular Magnetic Resonance, Johann Wolfgang Goethe‐Universit?t, 60438 Frankfurt (Germany) |