1. Biophysics Graduate Program, University of Wisconsin-Madison , Madison, WI , United States
2. Biotechnology Training Program, University of Wisconsin-Madison , Madison, WI , United States
3. Department of Biochemistry, University of Wisconsin-Madison , Madison, WI , United States
4. Cryo-Electron Microscopy Research Center, UW-Madison , Madison, WI , United States
5. Morgridge Institute for Research, UW-Madison , Madison, WI , United States