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 | polymer | 307 | 33498.9 | 2 | UniProt (P0C6V3) Pfam (PF05409) | Avian infectious bronchitis virus (strain Beaudette) (IBV) | 3CL-PRO,3CLp,Main protease,Mpro,Non-structural protein 5,nsp5,p33 |
| 2 | C, D (A, B) | (2~{S})-~{N}-[(2~{S})-1-azanylidene-3-[(3~{S})-2-oxidanylidenepyrrolidin-3-yl]propan-2-yl]-2-[[(2~{S})-3,3-dimethyl-2-(methylsulfonylamino)butanoyl]amino]-4-methyl-pentanamide | non-polymer | 459.6 | 2 | Chemie (A1D7M) | |||
| 3 | E, F (A, B) | water | water | 18.0 | 259 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 66997.7 | |
| Non-Polymers* | Number of molecules | 2 |
| Total formula weight | 919.2 | |
| All* | Total formula weight | 67916.9 |






