1. Department
of Bioengineering, University of California, Berkeley, California 94720, United States
2. The UC Berkeley & UCSF Graduate Program in Bioengineering, Berkeley, California 94720, United States
3. QB3: California Institute for Quantitative Biological Research, Berkeley, California 94720, United States
4. Physical
Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States