1. Molecular and Cellular Pharmacology Training Program, University of Wisconsin−Madison, Madison, Wisconsin 53705, United States
2. Department of Cell and Regenerative Biology, University of Wisconsin−Madison, Madison, Wisconsin 53705, United States
3. Department of Chemistry, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
4. Department of Surgery, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
5. Human Proteomics Program, School of Medicine and Public Health, University of Wisconsin−Madison, Madison, Wisconsin 53705, United States