Acknowledgement
We are grateful to Dr. Julian Gross for critical reading of the manuscript. We also thank the staff at the following facilities for assistance in grid screening and data collection using cryoEM: Mrs. Su Jeong Kim in POSTECH, Dr. Hyeongseop Jeong in the Korea Basic Science Institute (KBSI), Dr. Jin-Seok Choi in KAIST Research Analysis Center (KARA). Drs. Ludovic Renault and Wen Yang at The Netherlands Centre for Electron Nanoscopy (NeCEN). This research was supported by grants from the National Research Foundation (NRF) funded by the Ministry of Science, ICT, and Future Planning of Korea (MSIP) (NRF-2017M3A9F6029753, NRF-2019M3E5D6066058, NRF-2019R1A6A1A10073887, and NRF-2021M3A9I4022846), by a grant from the GIST Research Institute (GRI) IIBR funded by the GIST in 2020, and by a postdoctoral fellowship (S.K. [Songwon Kim]) from the NRF funded by MSIP (NRF-2020R1I1A1A01072077).
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