3M4A
Crystal structure of a bacterial topoisomerase IB in complex with DNA reveals a secondary DNA binding site
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A (A) | Putative Type I topoisomerase | polymer | 346 | 39077.4 | 1 | UniProt (Q9RWH8) Pfam (PF21338) Pfam (PF01028) | Deinococcus radiodurans | |
| 2 | B (D) | DNA (5'-D(*GP*AP*AP*TP*AP*AP*GP*GP*GP*CP*GP*C)-3') | polymer | 12 | 3736.5 | 1 | |||
| 3 | C (E) | DNA (5'-D(*GP*CP*GP*CP*CP*CP*TP*TP*AP*TP*TP*C)-3') | polymer | 12 | 3589.3 | 1 | |||
| 4 | D, E (A) | ACETIC ACID | non-polymer | 60.1 | 2 | Chemie (ACY) | |||
| 5 | F (D) | MAGNESIUM ION | non-polymer | 24.3 | 1 | Chemie (MG) | |||
| 6 | G, H, I (A, D, E) | water | water | 18.0 | 281 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 3 |
| Total formula weight | 46403.2 | |
| Non-Polymers* | Number of molecules | 3 |
| Total formula weight | 144.4 | |
| All* | Total formula weight | 46547.6 |
