1. Department of Chemistry, University of Cambridge, Cambridge CB2 1TN, United Kingdom
2. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
3. Department for Molecular Microbiology and Biotechnology, University of Tel Aviv, Tel Aviv 6997801, Israel
4. Institute of Physical Biology, University of Düsseldorf, Düsseldorf 40225, Germany