1. Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
2. Program in Computational and Systems Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
3. Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
4. Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
5. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
6. The Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
7. Koch Institute for Integrative Cancer Research, MIT, Cambridge, Massachusetts 02142, United States