1IR3

PHOSPHORYLATED INSULIN RECEPTOR TYROSINE KINASE IN COMPLEX WITH PEPTIDE SUBSTRATE AND ATP ANALOG


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.194 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the activated insulin receptor tyrosine kinase in complex with peptide substrate and ATP analog.

Hubbard, S.R.

(1997) EMBO J. 16: 5572-5581

  • DOI: 10.1093/emboj/16.18.5572

  • PubMed Abstract: 
  • The crystal structure of the phosphorylated, activated form of the insulin receptor tyrosine kinase in complex with a peptide substrate and an ATP analog has been determined at 1.9 A resolution. The activation loop (A-loop) of the kinase undergoes a ...

    The crystal structure of the phosphorylated, activated form of the insulin receptor tyrosine kinase in complex with a peptide substrate and an ATP analog has been determined at 1.9 A resolution. The activation loop (A-loop) of the kinase undergoes a major conformational change upon autophosphorylation of Tyr1158, Tyr1162 and Tyr1163 within the loop, resulting in unrestricted access of ATP and protein substrates to the kinase active site. Phosphorylated Tyr1163 (pTyr1163) is the key phosphotyrosine in stabilizing the conformation of the tris-phosphorylated A-loop, whereas pTyr1158 is completely solvent-exposed, suggesting an availability for interaction with downstream signaling proteins. The YMXM-containing peptide substrate binds as a short anti-parallel beta-strand to the C-terminal end of the A-loop, with the methionine side chains occupying two hydrophobic pockets on the C-terminal lobe of the kinase. The structure thus reveals the molecular basis for insulin receptor activation via autophosphorylation, and provides insights into tyrosine kinase substrate specificity and the mechanism of phosphotransfer.


    Related Citations: 
    • Crystal Structure of the Tyrosine Kinase Domain of the Human Insulin Receptor
      Hubbard, S.R.,Wei, L.,Ellis, L.,Hendrickson, W.A.
      (1994) Nature 372: 746


    Organizational Affiliation

    Department of Pharmacology and Skirball Institute of Biomolecular Medicine, 540 First Avenue, New York University Medical Center, New York, NY 10016, USA. hubbard@tallis.med.nyu.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INSULIN RECEPTOR
A
306Homo sapiensGene Names: INSR
EC: 2.7.10.1
Find proteins for P06213 (Homo sapiens)
Go to Gene View: INSR
Go to UniProtKB:  P06213
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PEPTIDE SUBSTRATE
B
18N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP

Download SDF File 
Download CCD File 
A
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.194 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 66.505α = 90.00
b = 66.505β = 90.00
c = 139.095γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
AMoREphasing
DENZOdata reduction
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1997-09-22 
  • Released Date: 1998-01-07 
  • Deposition Author(s): Hubbard, S.R.

Revision History 

  • Version 1.0: 1998-01-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance