1. Simons Electron Microscopy Center, New York Structural Biology Center , New York, NY , USA
2. Cryo-Electron Microscopy Core, New York University Grossman School of Medicine , New York, NY USA
3. Department of Cell Biology, New York University Grossman School of Medicine , New York, NY , USA
4. Chan Zuckerberg Imaging Institute , Redwood City, CA , USA