Entity
| Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| B | 5'-D(*TP*TP*TP*TP*GP*GP*CP*AP*CP*GP*TP*TP*TP*C)-3' | polymer | 14 | 4252.8 | 1 | |||
| C | 5'-D(*GP*AP*AP*AP*CP*GP*TP*GP*CP*CP*AP*AP*AP*A)-3' | polymer | 14 | 4306.8 | 1 | |||
| A | RNA polymerase sigma factor RpoN | polymer | 63 | 7488.8 | 1 | UniProt (O66858) | Aquifex aeolicus |
