1. University of Zurich, Department of Chemistry, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
2. University of Zurich, Department of Biochemistry, Winterthurerstrasse 190, 8057 Zurich, Switzerland
3. Functional Genomics Center Zurich, Eidgenössische Technische Hochschule (ETH) Zurich and University of Zurich, Zurich, Switzerland