3BU5

Crystal structure of the insulin receptor kinase in complex with IRS2 KRLB peptide and ATP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.194 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural and biochemical characterization of the KRLB region in insulin receptor substrate-2.

Wu, J.Tseng, Y.D.Xu, C.F.Neubert, T.A.White, M.F.Hubbard, S.R.

(2008) Nat.Struct.Mol.Biol. 15: 251-258

  • DOI: 10.1038/nsmb.1388
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Insulin receptor substrates 1 and 2 (IRS1 and -2) are crucial adaptor proteins in mediating the metabolic and mitogenic effects of insulin and insulin-like growth factor 1. These proteins consist of a pleckstrin homology domain, a phosphotyrosine bin ...

    Insulin receptor substrates 1 and 2 (IRS1 and -2) are crucial adaptor proteins in mediating the metabolic and mitogenic effects of insulin and insulin-like growth factor 1. These proteins consist of a pleckstrin homology domain, a phosphotyrosine binding domain and a C-terminal region containing numerous sites of tyrosine, serine and threonine phosphorylation. Previous yeast two-hybrid studies identified a region unique to IRS2, termed the kinase regulatory-loop binding (KRLB) region, which interacts with the tyrosine kinase domain of the insulin receptor. Here we present the crystal structure of the insulin receptor kinase in complex with a 15-residue peptide from the KRLB region. In the structure, this segment of IRS2 is bound in the kinase active site with Tyr628 positioned for phosphorylation. Although Tyr628 was phosphorylated by the insulin receptor, its catalytic turnover was poor, resulting in kinase inhibition. Our studies indicate that the KRLB region functions to limit tyrosine phosphorylation of IRS2.


    Organizational Affiliation

    Structural Biology Program, Kimmel Center for Biology and Medicine of the Skirball Institute, and Department of Pharmacology, New York University School of Medicine, 540 First Avenue, New York, New York 10016, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
insulin receptor subunit beta
A
306Homo sapiensMutation(s): 1 
Gene 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
Insulin receptor substrate 2
B
15Mus musculusMutation(s): 0 
Gene Names: Irs2
Find proteins for P81122 (Mus musculus)
Go to UniProtKB:  P81122
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download SDF File 
Download CCD File 
A
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-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: 2.1 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.194 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 46.750α = 90.00
b = 84.428β = 112.88
c = 50.601γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
REFMACrefinement
ADSCdata collection
MOLREPphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2007-12-31 
  • Released Date: 2008-02-19 
  • Deposition Author(s): Wu, J., Hubbard, S.R.

Revision History 

  • Version 1.0: 2008-02-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance