4XLV

Crystal structure of the activated insulin receptor tyrosine kinase dimer

  • Classification: TRANSFERASE
  • Organism(s): Homo sapiens
  • Expression System: Spodoptera frugiperda
  • Mutation(s): Yes 

  • Deposited: 2015-01-13 Released: 2015-03-25 
  • Deposition Author(s): Hubbard, S.R., Li, S.
  • Funding Organization(s): National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The insulin and IGF1 receptor kinase domains are functional dimers in the activated state.

Cabail, M.Z.Li, S.Lemmon, E.Bowen, M.E.Hubbard, S.R.Miller, W.T.

(2015) Nat Commun 6: 6406-6406

  • DOI: 10.1038/ncomms7406
  • Primary Citation of Related Structures:  
    4XLV

  • PubMed Abstract: 
  • The insulin receptor (IR) and insulin-like growth factor-1 receptor (IGF1R) are highly related receptor tyrosine kinases with a disulfide-linked homodimeric architecture. Ligand binding to the receptor ectodomain triggers tyrosine autophosphorylation ...

    The insulin receptor (IR) and insulin-like growth factor-1 receptor (IGF1R) are highly related receptor tyrosine kinases with a disulfide-linked homodimeric architecture. Ligand binding to the receptor ectodomain triggers tyrosine autophosphorylation of the cytoplasmic domains, which stimulates catalytic activity and creates recruitment sites for downstream signalling proteins. Whether the two phosphorylated tyrosine kinase domains within the receptor dimer function independently or cooperatively to phosphorylate protein substrates is not known. Here we provide crystallographic, biophysical and biochemical evidence demonstrating that the phosphorylated kinase domains of IR and IGF1R form a specific dimeric arrangement involving an exchange of the juxtamembrane region proximal to the kinase domain. In this dimer, the active position of α-helix C in the kinase N lobe is stabilized, which promotes downstream substrate phosphorylation. These studies afford a novel strategy for the design of small-molecule IR agonists as potential therapeutic agents for type 2 diabetes.


    Organizational Affiliation

    Department of Physiology and Biophysics, Stony Brook University, Stony Brook, New York 11794, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin receptorA328Homo sapiensMutation(s): 2 
Gene Names: INSR
EC: 2.7.10.1
Find proteins for P06213 (Homo sapiens)
Explore P06213 
Go to UniProtKB:  P06213
NIH Common Fund Data Resources
PHAROS  P06213
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACP
Query on ACP

Download CCD File 
A
PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER
C11 H18 N5 O12 P3
UFZTZBNSLXELAL-IOSLPCCCSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
AL-PEPTIDE LINKINGC9 H12 N O6 PTYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.982α = 90
b = 66.982β = 90
c = 136.58γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2015-01-13 
  • Released Date: 2015-03-25 
  • Deposition Author(s): Hubbard, S.R., Li, S.

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)United StatesDK052916

Revision History 

  • Version 1.0: 2015-03-25
    Type: Initial release
  • Version 1.1: 2017-09-20
    Changes: Author supporting evidence, Derived calculations, Source and taxonomy
  • Version 1.2: 2019-12-25
    Changes: Author supporting evidence