1. UCSF Center for Systems and Synthetic Biology, University of California, San Francisco, San Francisco, CA 94158, USA.
2. Department of Bioengineering and Therapeutic Sciences and the California Institute for Quantitative Biosciences, University of California, San Francisco, San Francisco, CA 94158, USA.
3. Diabetes Center and the Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.
4. Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA.
5. Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, CA 94158, USA.