1. Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75390
2. HHMI, University of Texas Southwestern Medical Center, Dallas, TX 75390
3. Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna BioCenter, 1030 Vienna, Austria
4. Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94158
5. Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712
6. Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, TX 78712
7. Center for Systems and Synthetic Biology, University of Texas at Austin, Austin, TX 78712