4DSU
Small-molecule ligands bind to a distinct pocket in Ras and inhibit SOS-mediated nucleotide exchange activity
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A | GTPase KRas, isoform 2B | polymer | 189 | 21530.6 | 1 | UniProt (P01116) Pfam (PF00071) In PDB | Homo sapiens (human) | KRas 4B, K-Ras 2, Ki-Ras, c-K-ras, c-Ki-ras, GTPase KRas, N-terminally processed |
| 2 | A | GUANOSINE-5'-DIPHOSPHATE | non-polymer | 443.2 | 1 | Chemie (GDP) | |||
| 3 | A | MAGNESIUM ION | non-polymer | 24.3 | 1 | Chemie (MG) | |||
| 4 | A | BENZIMIDAZOLE | non-polymer | 118.1 | 1 | Chemie (BZI) | |||
| 5 | water | water | 18.0 | 63 | Chemie (HOH) |
Sequence modifications
A: 2 - 188 (UniProt: P01116)
| PDB | External Database | Details |
|---|---|---|
| Gly 0 | - | expression tag |
| Ser 1 | - | expression tag |
| Asp 12 | Gly 12 | engineered mutation |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 1 |
| Total formula weight | 21530.6 | |
| Non-Polymers* | Number of molecules | 3 |
| Total formula weight | 585.6 | |
| All* | Total formula weight | 22116.2 |
