1. Cell Design Institute, University of California, San Francisco, San Francisco, CA 94158, USA.
2. Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA.
3. Department of Functional Genomics and Cellular Engineering, IBM Almaden Research Center, San Jose, CA 95120, USA.
4. Center for Cellular Construction, San Francisco, CA 94158, USA.