Crystal structure of a catalytic-loop mutant of the insulin receptor tyrosine kinase

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 

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This is version 1.4 of the entry. See complete history


Structural and biochemical evidence for an autoinhibitory role for tyrosine 984 in the juxtamembrane region of the insulin receptor

Li, S.Covino, N.D.Stein, E.G.Till, J.H.Hubbard, S.R.

(2003) J Biol Chem 278: 26007-26014

  • DOI: https://doi.org/10.1074/jbc.M302425200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Tyrosine 984 in the juxtamembrane region of the insulin receptor, between the transmembrane helix and the cytoplasmic tyrosine kinase domain, is conserved among all insulin receptor-like proteins from hydra to humans. Crystallographic studies of the tyrosine kinase domain and proximal juxtamembrane region reveal that Tyr-984 interacts with several other conserved residues in the N-terminal lobe of the kinase domain, stabilizing a catalytically nonproductive position of alpha-helix C. Steady-state kinetics measurements on the soluble kinase domain demonstrate that replacement of Tyr-984 with phenylalanine results in a 4-fold increase in kcat in the unphosphorylated (basal state) enzyme. Moreover, mutation of Tyr-984 in the full-length insulin receptor results in significantly elevated receptor phosphorylation levels in cells, both in the absence of insulin and following insulin stimulation. These data demonstrate that Tyr-984 plays an important structural role in maintaining the quiescent, basal state of the insulin receptor. In addition, the structural studies suggest a possible target site for small molecule activators of the insulin receptor, with potential use in the treatment of noninsulin-dependent diabetes mellitus.

  • Organizational Affiliation

    Skirball Institute of Biomolecular Medicine and Department of Pharmacology, New York University School of Medicine, New York, New York 10016, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
insulin receptor306Homo sapiensMutation(s): 2 
UniProt & NIH Common Fund Data Resources
Find proteins for P06213 (Homo sapiens)
Explore P06213 
Go to UniProtKB:  P06213
PHAROS:  P06213
GTEx:  ENSG00000171105 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06213
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.472α = 90
b = 69.482β = 90
c = 88.814γ = 90
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: 2003-07-22
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-10-27
    Changes: Database references
  • Version 1.4: 2023-08-16
    Changes: Data collection, Refinement description