1. Department of Biological Chemistry, David Geffen School of Medicine at UCLA, University of California–Los Angeles, 90095, Los Angeles, CA, USA
2. UCLA/DOE Institute for Genomics and Proteomics, University of California-Los Angeles, 90095, Los Angeles, CA, USA
3. Molecular Biology Institute, University of California–Los Angeles, Paul D. Boyer Hall, 405 Hilgard Avenue, 90095, Los Angeles, CA, USA
4. Department of Chemistry and Biochemistry, University of California–Los Angeles, 90095, Los Angeles, CA, USA
5. Beckman Coulter, Inc., 92821-6232, Brea, CA, USA