2B4S

Crystal structure of a complex between PTP1B and the insulin receptor tyrosine kinase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of a Complex between Protein Tyrosine Phosphatase 1B and the Insulin Receptor Tyrosine Kinase.

Li, S.Depetris, R.S.Barford, D.Chernoff, J.Hubbard, S.R.

(2005) Structure 13: 1643-1651

  • DOI: 10.1016/j.str.2005.07.019

  • PubMed Abstract: 
  • Protein tyrosine phosphatase 1B (PTP1B) is a highly specific negative regulator of insulin receptor signaling in vivo. The determinants of PTP1B specificity for the insulin receptor versus other receptor tyrosine kinases are largely unknown. Here, we ...

    Protein tyrosine phosphatase 1B (PTP1B) is a highly specific negative regulator of insulin receptor signaling in vivo. The determinants of PTP1B specificity for the insulin receptor versus other receptor tyrosine kinases are largely unknown. Here, we report a crystal structure at 2.3 A resolution of the catalytic domain of PTP1B (trapping mutant) in complex with the phosphorylated tyrosine kinase domain of the insulin receptor (IRK). The crystallographic asymmetric unit contains two PTP1B-IRK complexes that interact through an IRK dimer interface. Rather than binding to a phosphotyrosine in the IRK activation loop, PTP1B binds instead to the opposite side of the kinase domain, with the phosphorylated activation loops sequestered within the IRK dimer. The crystal structure provides evidence for a noncatalytic mode of interaction between PTP1B and IRK, which could be important for the selective recruitment of PTP1B to the insulin receptor.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein phosphatase, non-receptor type 1
A, C
298Homo sapiensMutation(s): 1 
Gene Names: PTPN1 (PTP1B)
EC: 3.1.3.48
Find proteins for P18031 (Homo sapiens)
Go to Gene View: PTPN1
Go to UniProtKB:  P18031
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Insulin receptor
B, D
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
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
B, D
L-PEPTIDE LINKINGC9 H12 N O6 PTYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.208 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 87.472α = 90.00
b = 88.165β = 90.00
c = 178.040γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-11-15
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance