1. Laboratory of Physical Chemistry; ETH Zürich; Vladimir-Prelog-Weg 2 8093 Zürich Switzerland
2. Department of Biology, Chemistry, Pharmacy; Freie Universität Berlin; Takustrasse 3 14195 Berlin Germany
3. Novartis Institutes for BioMedical Research; Novartis Pharma AG; Novartis Campus 4056 Basel Switzerland