1. Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
2. Netherlands Proteomics Centre, Utrecht, The Netherlands
3. The Howard Hughes Medical Institute, Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, USA
4. La Jolla Institute for Allergy and Immunology, La Jolla, CA, USA