1.900 Å
X-ray
1992-06-10
| Name: | Dihydrofolate reductase |
|---|---|
| ID: | DYR_ECOLI |
| AC: | P0ABQ4 |
| Organism: | Escherichia coli |
| Reign: | Bacteria |
| TaxID: | 83333 |
| EC Number: | 1.5.1.3 |
| Chain Name: | Percentage of Residues within binding site |
|---|---|
| B | 100 % |
| B-Factor: | 15.019 |
|---|---|
| Number of residues: | 28 |
| Including | |
| Standard Amino Acids: | 28 |
| Non Standard Amino Acids: | 0 |
| Water Molecules: | 0 |
| Cofactors: | |
| Metals: | |
| Ligandability | Volume (Å3) |
|---|---|
| 1.205 | 1059.750 |
| % Hydrophobic | % Polar |
|---|---|
| 41.08 | 58.92 |
| According to VolSite | |

| HET Code: | MTX |
|---|---|
| Formula: | C20H20N8O5 |
| Molecular weight: | 452.423 g/mol |
| DrugBank ID: | DB00563 |
| Buried Surface Area: | 53.46 % |
| Polar Surface area: | 216.2 Å2 |
| Number of | |
|---|---|
| H-Bond Acceptors: | 12 |
| H-Bond Donors: | 3 |
| Rings: | 3 |
| Aromatic rings: | 3 |
| Anionic atoms: | 2 |
| Cationic atoms: | 0 |
| Rule of Five Violation: | 1 |
| Rotatable Bonds: | 9 |
| X | Y | Z |
|---|---|---|
| 18.3909 | 68.7696 | 42.726 |
Image generated by PoseView
Represent the protein/ligand binding mode, centered on the ligand
Dashed lines represents hydrogen bonds and metal interactions
Green residue labels for amino acids with hydrophobic contacts (green lines) to the ligand
| Ligand | Protein | Interaction | |||
|---|---|---|---|---|---|
| Atom | Atom | Residue | Distance (Å) | Angle (°) | Type |
| NA4 | O | ILE- 5 | 2.86 | 161.01 | H-Bond (Ligand Donor) |
| N1 | OD2 | ASP- 27 | 2.69 | 168.84 | H-Bond (Ligand Donor) |
| N1 | OD1 | ASP- 27 | 3.49 | 121.2 | H-Bond (Ligand Donor) |
| NA2 | OD2 | ASP- 27 | 3.44 | 128.22 | H-Bond (Ligand Donor) |
| NA2 | OD1 | ASP- 27 | 2.6 | 170.36 | H-Bond (Ligand Donor) |
| CG | CB | LEU- 28 | 3.75 | 0 | Hydrophobic |
| C11 | CD2 | LEU- 28 | 3.8 | 0 | Hydrophobic |
| CB | CD | LYS- 32 | 4.25 | 0 | Hydrophobic |
| CM | CB | SER- 49 | 4.22 | 0 | Hydrophobic |
| C9 | CG1 | ILE- 50 | 4.17 | 0 | Hydrophobic |
| CM | CG1 | ILE- 50 | 4.2 | 0 | Hydrophobic |
| C12 | CG2 | ILE- 50 | 4.39 | 0 | Hydrophobic |
| C14 | CG1 | ILE- 50 | 3.61 | 0 | Hydrophobic |
| O | NH2 | ARG- 52 | 2.73 | 141.21 | H-Bond (Protein Donor) |
| C16 | CD2 | LEU- 54 | 3.97 | 0 | Hydrophobic |
| O1 | NH1 | ARG- 57 | 2.71 | 158.44 | H-Bond (Protein Donor) |
| O1 | NH2 | ARG- 57 | 3.39 | 126.56 | H-Bond (Protein Donor) |
| O2 | NH2 | ARG- 57 | 2.76 | 175.13 | H-Bond (Protein Donor) |
| O1 | CZ | ARG- 57 | 3.45 | 0 | Ionic (Protein Cationic) |
| O2 | CZ | ARG- 57 | 3.65 | 0 | Ionic (Protein Cationic) |
| NA4 | O | ILE- 94 | 2.85 | 130.94 | H-Bond (Ligand Donor) |