Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A | Dihydrofolate reductase | polymer | 159 | 18051.3 | 1 | UniProt (U6N356) In PDB | Escherichia coli | |
| 2 | A | FOLIC ACID | non-polymer | 441.4 | 1 | Chemie (FOL) | |||
| 3 | A | NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE | non-polymer | 743.4 | 1 | Chemie (NAP) | |||
| 4 | A | MANGANESE (II) ION | non-polymer | 54.9 | 2 | Chemie (MN) | |||
| 5 | water | water | 18.0 | 230 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 18051.3 | |
| Non-Polymers* | Number of molecules | 4 |
| Total formula weight | 1294.7 | |
| All* | Total formula weight | 19346.0 |
