1. Hubrecht Institute-KNAW, University Medical Centre Utrecht; Utrecht The Netherlands
2. Institute of Zoology, University of Innsbruck; Innsbruck Austria
3. Biomolecular Mass Spectrometry and Proteomics Group, Bijvoet Centre for Biomolecular Research, Utrecht Institute for Pharmaceutical Sciences and Netherlands Proteomics Center, Utrecht University; Utrecht The Netherlands
4. Department of Physiological Chemistry, University Medical Center Utrecht; Utrecht The Netherlands
5. Molecular and Cellular Biology, University of California Davis; Davis CA USA
6. Howard Hughes Medical Institute and Fred Hutchinson Cancer Research Center; Seattle WA USA