5]
3TLO  HCoV-NL63 3CLPro  -  -  [3637]
6LU7  Main protease of 2019-nCoV and its complex with N3 (inhibitor)  -  -  [38]
Spike protein
5ZUV  HR1 motif of HCoV-229E in complex with EK1  Modified OC43-HR2P peptide (EK1)  0.19-0.62 µM  [39]
5ZVM  EK1 in complex with SARS HR1 motif    [39]
5X4S  NTD of SARS