1. Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
2. Biophysics Graduate Group, University of California - Berkeley, Berkeley, CA 94720, USA
3. Designated Emphasis Program in Computational and Genomic Biology, University of California - Berkeley, Berkeley, CA 94720, USA
4. UC Berkeley-UCSF Graduate Program in Bioengineering, University of California - Berkeley, Berkeley, CA 94720, USA
5. Department of Bioengineering, University of California - Berkeley, Berkeley, CA 94720, USA
6. Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO 80309, USA