› 4m1w

X-ray diffraction
1.58Å resolution

Crystal Structure of small molecule vinylsulfonamide covalently bound to K-Ras G12C

Released:
DOI: 10.2210/pdb4m1w/pdb
PDB entry 4m1w coloured by chain, front view.
PDB entry 4m1w coloured by chain, side view.
PDB entry 4m1w coloured by chain, top view.
Source organism: Homo sapiens
Primary publication:
K-Ras(G12C) inhibitors allosterically control GTP affinity and effector interactions.
Ostrem JM, Peters U, Sos ML, Wells JA, Shokat KM
Nature 503 548-51 (2013)
PMID: 24256730

Function and Biology Details

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

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-133991 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
GTPase KRas, N-terminally processed Chains: A, B, C
Molecule details ›
Chains: A, B, C
Length: 170 amino acids
Theoretical weight: 19.35 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P01116 (Residues: 1-169; Coverage: 89%)
Gene names: KRAS, KRAS2, RASK2
Sequence domains: Ras family
Structure domains: P-loop containing nucleotide triphosphate hydrolases

Ligands and Environments

3 bound ligands:
Ligand MG 1 x MG
Ligand 21R 3 x 21R
Ligand GDP 3 x GDP
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 8.2.1
Spacegroup: C2
Unit cell:
a: 68.095Å b: 83.817Å c: 87.238Å
α: 90° β: 111.06° γ: 90°
R-values:
R R work R free
0.17 0.169 0.19
Expression system: Escherichia coli BL21(DE3)

Quick links

Citations

406 review citations

Drugging the undruggable RAS: Mission possible?
Cox et al. (2014)
405 more

4 mentions without citation

A structural model of a Ras-Raf signalosome.
Mysore et al. (2021)
3 more