1 Illustration & Design Program Manager, Cell Press, Cambridge, MA, USA. Electronic address: klyall@cell.com.
2 University of Utah, Salt Lake City, UT, USA. Electronic address: jiwasa@biochem.utah.edu.
3 The Scripps Research Institute, La Jolla, CA, USA; RCSB Protein Data Bank. Electronic address: goodsell@scripps.edu.
4 New York University School of Medicine, Institute for Systems Genetics, New York, NY, USA; New York University Tandon School of Engineering, Department of Biomolecular Engineering, Brooklyn, NY, USA. Electronic address: ljholt@gmail.com.