IGF-1 receptor kinase domain

Experimental Data Snapshot

  • Resolution: 2.10 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.195 

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This is version 1.3 of the entry. See complete history


Crystal structure of bisphosphorylated IGF-1 receptor kinase: insight into domain movements upon kinase activation.

Pautsch, A.Zoephel, A.Ahorn, H.Spevak, W.Hauptmann, R.Nar, H.

(2001) Structure 9: 955-965

  • DOI: https://doi.org/10.1016/s0969-2126(01)00655-4
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The insulin-like growth-factor-1 (IGF-1) receptor, which is widely expressed in cells that have undergone oncogenic transformation, is emerging as a novel target in cancer therapy. IGF-1-induced receptor activation results in autophosphorylation of cytoplasmic kinase domains and enhances their capability to phosphorylate downstream substrates. Structures of the homologous insulin receptor kinase (IRK) exist in an open, unphosphorylated form and a closed, trisphosphorylated form. We have determined the 2.1 A crystal structure of the IGF-1 receptor protein tyrosine kinase domain phosphorylated at two tyrosine residues within the activation loop (IGF-1RK2P) and bound to an ATP analog. The ligand is not in a conformation compatible with phosphoryl transfer, and the activation loop is partially disordered. Compared to the homologous insulin receptor kinase, IGF-1RK2P is trapped in a half-closed, previously unobserved conformation. Observed domain movements can be dissected into two orthogonal rotational components. Conformational changes upon kinase activation are triggered by the degree of phosphorylation and are crucially dependent on the conformation of the proximal end of the kinase activation loop. This IGF-1RK structure will provide a molecular basis for the design of selective antioncogenic therapeutic agents.

  • Organizational Affiliation

    Boehringer Ingelheim Pharma KG Deutschland, Birkendorferstrasse 65, D-88400 Biberach, Germany. alexander.pautsch@bc.boehringer-ingelheim.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
IGF-1 receptor kinase
A, B, C
308Homo sapiensMutation(s): 2 
UniProt & NIH Common Fund Data Resources
Find proteins for P08069 (Homo sapiens)
Explore P08069 
Go to UniProtKB:  P08069
GTEx:  ENSG00000140443 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08069
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.10 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.195 
  • Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.963α = 90
b = 85.963β = 90
c = 132.204γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-04-19
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-11-10
    Changes: Database references, Derived calculations