IGF-1RK in complex with ligand MSC1609119A-1

Experimental Data Snapshot

  • Resolution: 1.79 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.157 

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This is version 1.3 of the entry. See complete history


Allosteric IGF-1R Inhibitors.

Heinrich, T.Gradler, U.Bottcher, H.Blaukat, A.Shutes, A.

(2010) ACS Med Chem Lett 1: 199-203

  • DOI: https://doi.org/10.1021/ml100044h
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Targeting allosteric protein sites is a promising approach to interfere selectively with cellular signaling cascades. We have discovered a novel class of allosteric insulin-like growth factor-I receptor (IGF-1R) inhibitors. 3-Cyano-1H-indole-7-carboxylic acid {1-[4-(5-cyano-1H-indol-3-yl)butyl]piperidin-4-yl}amide (10) was found with nanomolar biochemical, micromolar, cellular IGF-1R activity and no relevant interference with cellular insulin receptor signaling up to 30 μM. The allosteric binding site was characterized by X-ray crystallographic studies, and the structural information was used to explain the unique mode of action of this new class of inhibitors.

  • Organizational Affiliation

    Merck Serono, Frankfurter Strasse 250, 64293 Darmstadt, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Insulin-like growth factor 1 receptor
A, B, C, D
304Homo sapiensMutation(s): 2 
Gene Names: IGF1R
UniProt & NIH Common Fund Data Resources
Find proteins for P08069 (Homo sapiens)
Explore P08069 
Go to UniProtKB:  P08069
PHAROS:  P08069
GTEx:  ENSG00000140443 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08069
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on CCX

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
G [auth B]
H [auth B]
J [auth C]
E [auth A],
F [auth A],
G [auth B],
H [auth B],
J [auth C],
K [auth C],
M [auth D],
N [auth D]
C28 H28 N6 O
Query on GOL

Download Ideal Coordinates CCD File 
I [auth B],
L [auth C]
C3 H8 O3
Binding Affinity Annotations 
IDSourceBinding Affinity
CCX PDBBind:  3LW0 IC50: 400 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 1.79 Å
  • R-Value Free: 0.185 
  • R-Value Work: 0.157 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 189.346α = 90
b = 189.346β = 90
c = 115.92γ = 120
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata 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: 2010-09-29
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2019-12-25
    Changes: Advisory, Database references
  • Version 1.3: 2023-11-01
    Changes: Advisory, Data collection, Database references, Derived calculations, Refinement description