1. Microbial Protein Structure Group; Max Planck Institute for Terrestrial Microbiology; Karl-von-Frisch Straße 10 35043 Marburg Germany
2. Current address: Microbial Metabolism group; Max Planck Institute for Marine Microbiology; Celsiusstrasse 1 28359 Bremen Germany
3. Mass Spectrometry and Proteomics Unit; Max Planck Institute for Terrestrial Microbiology; Karl-von-Frisch Straße 10 35043 Marburg Germany
4. Department of Physics; Freie Universität Berlin; 14195 Berlin Germany
5. Department of Max-Planck-Institut für Biophysik; Max-von-Laue-Straße 3 60438 Frankfurt/Main Germany