1. Biomolecular Mass Spectrometry and Proteomics; Bijvoet Center for Biomolecular Research and Utrecht Institute of Pharmaceutical Sciences, Utrecht University; Padualaan 8 3584 CH Utrecht The Netherlands
2. Netherlands Proteomics Centre; The Netherlands
3. Protein Expression Laboratory; National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health; Bethesda Maryland 20892
4. Laboratory of Structural Biology; National Institute of Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health; Bethesda Maryland 20892