1. Genome Biology Unit; European Molecular Biology Laboratory; Meyerhofstrasse 1 69117 Heidelberg Germany
2. Department of Chemistry and Konstanz Research School Chemical Biology (KoRS-CB); University of Konstanz; Fach 709 78457 Konstanz Germany
3. Chemical Biology Core Facility; European Molecular Biology Laboratory; Meyerhofstrasse 1 69117 Heidelberg Germany
4. Structural and Computational Biology Unit; European Molecular Biology Laboratory; Meyerhofstrasse 1 69117 Heidelberg Germany