Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords | 
| 1 | A, B, C, D, E... (A, B, C, D, E...) | Thymidylate synthase | polymer | 307 | 35001.0 | 6 | UniProt (P07607) Pfam (PF00303) | Mus musculus (mouse) | TS, TSase | 
| 2 | G, H, I, M, N... (A, B, C, D, E...) | 2'-DEOXYURIDINE 5'-MONOPHOSPHATE | non-polymer | 308.2 | 7 | Chemie (UMP) | |||
| 3 | J, K, L (C) | 1,4-BUTANEDIOL | non-polymer | 90.1 | 3 | Chemie (BU1) | |||
| 4 | Q, R, S, T, U... (A, B, C, D, E...) | water | water | 18.0 | 1472 | Chemie (HOH) | 
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 6 | 
| Total formula weight | 210006.1 | |
| Non-Polymers* | Number of molecules | 10 | 
| Total formula weight | 2427.6 | |
| All* | Total formula weight | 212433.7 | 











