PDBe 4epw

X-ray diffraction
1.7Å resolution

Discovery of Small Molecules that Bind to K-Ras and Inhibit Sos-mediated Activation

Released:

Function and Biology Details

Reaction catalysed:
GTP + H(2)O = GDP + phosphate
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
GTPase KRas, N-terminally processed Chain: A
Molecule details ›
Chain: A
Length: 170 amino acids
Theoretical weight: 19.31 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P01116 (Residues: 1-169; Coverage: 89%)
  • Best match: P01116-2 (Residues: 1-169)
Gene names: KRAS, KRAS2, RASK2
Sequence domains: Ras family
Structure domains: P-loop containing nucleotide triphosphate hydrolases

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: BRUKER AXS MICROSTAR
Spacegroup: P212121
Unit cell:
a: 39.219Å b: 41.924Å c: 91.448Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.188 0.186 0.24
Expression system: Escherichia coli