1. Ion
Cyclotron Resonance Program, National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
2. Proteomics
Center of Excellence, Northwestern University, Evanston, Illinois 60208, United States
3. Departments
of Chemistry and Molecular Biosciences and the Division of Hematology-Oncology, Northwestern University, Evanston, Illinois 60208, United States
4. Department
of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32304, United States