About the Authors
Hubrecht Institute and University Medical Centre Utrecht, Utrecht, The Netherlands
Biomolecular Mass Spectrometry and Proteomics Group, Utrecht University, Utrecht, The Netherlands
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: TM SM AJRH HC. Performed the experiments: TM SFB PH VSWL NT RGJV HT HB JK. Analyzed the data: TM SFB VSWL. Contributed reagents/materials/analysis tools: TM HC. Wrote the paper: TM HC.