1. Department of NMR based Structural BiologyMax Planck Institute for Biophysical Chemistry Am Fassberg 11 37077 Göttingen Germany
2. Centre de RMN à Très Hauts ChampsInstitut des Sciences AnalytiquesUMR 5280/CNRSENS LyonUCB Lyon 1Université de Lyon Villeurbanne France
3. Institute of Biochemical EngineeringTechnical University of Munich Boltzmannstraße 15 D-85748 Garching Germany
4. Institute of Bioprocess EngineeringFriedrich-Alexander-Universität Erlangen-Nürnberg Paul-Gordan-Straße 3 91052 Erlangen Germany