1. Life Sciences Division, Lawrence Berkeley National Laboratory, Donner
Laboratory, University of California, Berkeley,
California
94720, United States
2. Department
of Chemistry and Biochemistry, California State University Long Beach, Long Beach, California 90840, United States
3. Children’s Hospital of Oakland Research Institute, Oakland, California
94609, United States
4. Department
of Chemistry, QB3 Mass Spectrometry Facility, University of California, Berkeley, California 94720, United States
5. Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California
94720, United States