Structure of Apo unactivated IGF-1R KInase domain at 1.5A resolution.

Experimental Data Snapshot

  • Resolution: 1.50 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.209 

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Structure of apo, unactivated insulin-like growth factor-1 receptor kinase at 1.5 A resolution.

Munshi, S.Hall, D.L.Kornienko, M.Darke, P.L.Kuo, L.C.

(2003) Acta Crystallogr D Biol Crystallogr 59: 1725-1730

  • DOI: https://doi.org/10.1107/s0907444903015415
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The crystal structure of the wild-type unactivated kinase domain (IGFRK-0P) of insulin-like growth factor-1 receptor has been reported previously at 2.7 A resolution [Munshi et al. (2002), J. Biol. Chem. 277, 38797-38802]. In order to obtain a high-resolution structure, a number of variants of IGFRK-0P were prepared and screened for crystallization. A double mutant with E1067A and E1069A substitutions within the kinase-insert region resulted in crystals that diffracted to 1.5 A resolution. Overall, the structure of the mutant IGFRK-0P is similar to that of the wild-type IGFRK-0P structure, with the exception of the previously disordered kinase-insert region in the wild type having become fixed. In addition, amino-acid residues 947-952 at the N-terminus are well defined in the mutant structure. The monomeric protein structure is folded into two lobes connected by a hinge region, with the catalytic center situated at the interface of the two lobes. Two molecules of IGFRK-0P in the asymmetric unit are associated as a dimer and two different types of dimers with their ATP-binding clefts either facing towards or away from each other are observed. The current refined model consists of a dimer and 635 water molecules.

  • Organizational Affiliation

    Department of Structural Biology, Merck Research Laboratories, West Point, PA 19486, USA. sanjeev_munshi@merck.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Insulin-like growth factor I receptor protein
A, B
322Homo sapiensMutation(s): 2 
Gene Names: IGF1R
EC: (PDB Primary Data), (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P08069 (Homo sapiens)
Explore P08069 
Go to UniProtKB:  P08069
PHAROS:  P08069
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08069
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.50 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.209 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.95α = 90
b = 85.56β = 99.1
c = 78.88γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-04-29
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2021-10-27
    Changes: Database references