1. Department of Chemistry and Konstanz Research School, Chemical Biology (KoRS-CB); University of Konstanz; Universitätsstraße 10 78457 Konstanz Germany
2. Department of Biology and Graduate School Biological Science; University of Konstanz; Universitätsstraße 10 78457 Konstanz Germany
3. Department of Chemistry and Munich Center for Integrated Protein Science and Center for Nanoscience; Ludwig-Maximilians-Universität München; Butenandtstraße 11 81377 Munich Germany