1. Institute of Physical and Theoretical Chemistry and Institute of Biophysical Chemistry
2. Goethe University Frankfurt
3. 60438 Frankfurt am Main
4. Germany
5. Center for Biomolecular Magnetic Resonance (BMRZ)
6. Francis Bitter Magnet Laboratory and Department of Chemistry
7. Massachusetts Institute of Technology
8. Cambridge
9. USA
10. Bruker Biospin Ltd.
11. Billerica
12. Institute of Organic Chemistry and Chemical Biology