8YO3
structure of phage T4 topoisomerase II central domain
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords | 
| 1 | A, C (A, B)  | DNA topoisomerase medium subunit | polymer | 442 | 50570.5 | 2 | UniProt (P07065) Pfam (PF00521)  | Escherichia phage T4 | DNA topoisomerase 51-kDa subunit,Protein Gp52 | 
| 2 | B, D (C, D)  | phage T4 topoisomerase II gp39-gp60 subunit | polymer | 682 | 77524.7 | 2 | Pfam (PF02518) Pfam (PF00204) UniProt (by SIFTS) (P09176)  | Escherichia phage T4 | 
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 | 
| Total formula weight | 256190.5 | |
| All* | Total formula weight | 256190.5 | 






