1. Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584CH Utrecht, The Netherlands
2. Netherlands Proteomics Center, Padualaan
8, 3584CH Utrecht, The Netherlands
3. Department
of Structural Cell Biology, Max Planck Institute of Biochemistry, Am Klopferspitz
18, 82152 Martinsried, Germany