Crystal structure of human KRAS G12V mutant in complex with GDP

Experimental Data Snapshot

  • Resolution: 1.50 Å
  • R-Value Free: 0.153 
  • R-Value Work: 0.117 
  • R-Value Observed: 0.118 

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Multivalent Small-Molecule Pan-RAS Inhibitors.

Welsch, M.E.Kaplan, A.Chambers, J.M.Stokes, M.E.Bos, P.H.Zask, A.Zhang, Y.Sanchez-Martin, M.Badgley, M.A.Huang, C.S.Tran, T.H.Akkiraju, H.Brown, L.M.Nandakumar, R.Cremers, S.Yang, W.S.Tong, L.Olive, K.P.Ferrando, A.Stockwell, B.R.

(2017) Cell 168: 878-889.e29

  • DOI: https://doi.org/10.1016/j.cell.2017.02.006
  • Primary Citation of Related Structures:  
    5UQW, 5US4, 5USJ

  • PubMed Abstract: 

    Design of small molecules that disrupt protein-protein interactions, including the interaction of RAS proteins and their effectors, may provide chemical probes and therapeutic agents. We describe here the synthesis and testing of potential small-molecule pan-RAS ligands, which were designed to interact with adjacent sites on the surface of oncogenic KRAS. One compound, termed 3144, was found to bind to RAS proteins using microscale thermophoresis, nuclear magnetic resonance spectroscopy, and isothermal titration calorimetry and to exhibit lethality in cells partially dependent on expression of RAS proteins. This compound was metabolically stable in liver microsomes and displayed anti-tumor activity in xenograft mouse cancer models. These findings suggest that pan-RAS inhibition may be an effective therapeutic strategy for some cancers and that structure-based design of small molecules targeting multiple adjacent sites to create multivalent inhibitors may be effective for some proteins.

  • Organizational Affiliation

    Department of Chemistry, Columbia University, New York, NY 10027, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GTPase KRas
A, B
189Homo sapiensMutation(s): 1 
EC: 3.6.5
UniProt & NIH Common Fund Data Resources
Find proteins for P01116 (Homo sapiens)
Explore P01116 
Go to UniProtKB:  P01116
PHAROS:  P01116
GTEx:  ENSG00000133703 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01116
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.50 Å
  • R-Value Free: 0.153 
  • R-Value Work: 0.117 
  • R-Value Observed: 0.118 
  • Space Group: P 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 84.344α = 90
b = 84.344β = 90
c = 41.809γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-03-22
    Type: Initial release
  • Version 1.1: 2017-09-27
    Changes: Author supporting evidence
  • Version 1.2: 2024-03-06
    Changes: Data collection, Database references, Derived calculations