1. ETH Zürich, Laboratory of Physical Chemistry, HCI F217, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
2. Swiss
Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
3. Novartis
Institutes for BioMedical Research, Novartis AG, CH-4002 Basel, Switzerland
4. Institute
of Biophysical Chemistry, Center for Biomolecular Magnetic Resonance,
and Frankfurt Institute of Advanced Studies, Goethe University Frankfurt am Main, Frankfurt am Main 60323, Germany