1. Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
2. Department of Biochemistry, University of Washington, Seattle, WA, USA
3. Institute for Protein Design, University of Washington, Seattle, WA, USA
4. Program in Molecular Biophysics, Johns Hopkins University, Baltimore, MD, USA
5. Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, USA
6. Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, USA