1. Center for Biomolecular Magnetic Resonance (BMRZ); Institute for Organic Chemistry and Chemical Biology; Johann Wolfgang Goethe-Universität; Max-von-Laue-Strasse 7 60438 Frankfurt am Main Germany
2. German Cancer Consortium (DKTK); In Neuenheimer Feld 280 69120 Heidelberg Germany
3. German Cancer Research Center (DKFZ); In Neuenheimer Feld 280 69120 Heidelberg Germany
4. Chair of Proteomics and Bioanalytics; Technical University of Munich; Emil-Erlenmeyer-Forum 5 85354 Freising Germany
5. Chair of Biological Chemistry; Technical University of Munich; Emil-Erlenmeyer-Forum 5 85354 Freising Germany
6. Center for integrated Protein Science Munich (CIPSM); Technical University of Munich; Arcisstrasse 21 80333 München Germany
7. Bavarian Biomolecular Mass Spectrometry Center; Technical University of Munich; Gregor-Mendel-Strasse 4 85354 Freising Germany