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 (P0DTC1) 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, G (A, B) | (7~{R},11~{R},19~{E})-11-[(4-chlorophenyl)methyl]-13-oxa-3,10,23-triazatricyclo[19.3.1.0^{3,7}]pentacosa-1(24),19,21(25),22-tetraene-2,9,12-trione | non-polymer | 510.0 | 2 | Chemie (A1IL7) | |||
| 3 | D, I, K, L, M... (A, B) | SULFATE ION | non-polymer | 96.1 | 7 | Chemie (SO4) | |||
| 4 | E, H, J, O, P (A, B) | GLYCEROL | non-polymer | 92.1 | 5 | Chemie (GOL) | |||
| 5 | F, Q (A, B) | 1,2-ETHANEDIOL | non-polymer | 62.1 | 2 | Chemie (EDO) | |||
| 6 | S, T (A, B) | water | water | 18.0 | 455 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 67651.1 | |
| Non-Polymers* | Number of molecules | 16 |
| Total formula weight | 2277.1 | |
| All* | Total formula weight | 69928.2 |






