1M7N

Crystal Structure of Unactivated APO Insulin-like Growth Factor-1 Receptor Kinase Domain

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.229 

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This is version 1.2 of the entry. See complete history. 


Literature

Crystal structure of the Apo, unactivated insulin-like growth factor-1 receptor kinase. Implication for inhibitor specificity.

Munshi, S., Kornienko, M., Hall, D.L., Reid, J.C., Waxman, L., Stirdivant, S.M., Darke, P.L., Kuo, L.C.

(2002) J Biol Chem 277: 38797-38802

  • DOI: 10.1074/jbc.M205580200
  • Primary Citation of Related Structures:  
    1M7N

  • PubMed Abstract: 

    • The x-ray structure of the unactivated kinase domain of insulin-like growth factor-1 receptor (IGFRK-0P) is reported here at 2.7 A resolution. IGFRK-0P is composed of two lobes connected by a hinge region. The N-terminal lobe of the kinase is a twist ...

    The x-ray structure of the unactivated kinase domain of insulin-like growth factor-1 receptor (IGFRK-0P) is reported here at 2.7 A resolution. IGFRK-0P is composed of two lobes connected by a hinge region. The N-terminal lobe of the kinase is a twisted beta-sheet flanked by a single helix, and the C-terminal lobe comprises eight alpha-helices and four short beta-strands. The ATP binding pocket and the catalytic center reside at the interface of the two lobes. Despite the overall similarity to other receptor tyrosine kinases, three notable conformational modifications are observed: 1) this kinase adopts a more closed structure, with its two lobes rotated further toward each other; 2) the conformation of the proximal end of the activation loop (residues 1121-1129) is different; 3) the orientation of the nucleotide-binding loop is altered. Collectively, these alterations lead to a different ATP-binding pocket that might impact on inhibitor designs for IGFRK-0P. Two molecules of IGFRK-0P are seen in the asymmetric unit; they are associated as a dimer with their ATP binding clefts facing each other. The ordered N terminus of one monomer approaches the active site of the other, suggesting that the juxtamembrane region of one molecule could come into close proximity to the active site of the other.

    Organizational Affiliation: 

    Department of Structural Biology, Merck Research Laboratories, West Point, Pennsylvania 19486, USA.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin-like growth factor I receptorA, B322Homo sapiensMutation(s): 0 
Gene Names: IGF1R
EC: 2.7.1.112 (PDB Primary Data), 2.7.10.1 (UniProt)
Find proteins for P08069 (Homo sapiens)
Explore P08069 
Go to UniProtKB:  P08069
NIH Common Fund Data Resources
PHAROS  P08069
GTEx  ENSG00000140443
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.294 
  • R-Value Work: 0.229 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.88α = 90
b = 78.06β = 99.17
c = 78.97γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
AMoREphasing
CNXrefinement
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2002-07-22 
  • Released Date: 2003-01-07 
    • Deposition Author(s): Munshi, S., Kuo, L.

Revision History 

  • Version 1.0: 2003-01-07
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance