Entity
| Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| A | Probable threonine--tRNA ligase 2 | polymer | 136 | 15135.4 | 1 | Aeropyrum pernix K1@PDBj | Threonyl-tRNA synthetase 2, ThrRS 2 | |
| A | 3'-deoxy-3'-(L-threonylamino)adenosine | non-polymer | 367.4 | 1 | Chemie (A3T) | |||
| water | water | 18.0 | 221 | Chemie (HOH) |
