Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B (A, B) | 3C-like proteinase nsp5 | polymer | 306 | 33825.5 | 2 | UniProt (P0DTD1) Pfam (PF05409) | Severe acute respiratory syndrome coronavirus 2 | 3CL-PRO,3CLp,Main protease,Mpro,Non-structural protein 5,nsp5,SARS coronavirus main proteinase |
| 2 | C (A) | N-(trifluoroacetyl)-D-phenylalanyl-N-{(1Z,2S)-1-imino-3-[(3S)-2-oxopyrrolidin-3-yl]propan-2-yl}-L-phenylalaninamide | non-polymer | 545.6 | 1 | BIRD (PRD_002602) Chemie (A1DAK) | |||
| 3 | D, E (A, B) | water | water | 18.0 | 307 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 67651.1 | |
| Non-Polymers* | Number of molecules | 1 |
| Total formula weight | 545.6 | |
| All* | Total formula weight | 68196.6 |






