1PTV

CRYSTAL STRUCTURE OF PROTEIN TYROSINE PHOSPHATASE 1B COMPLEXED WITH PHOSPHOTYROSINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.172 
  • R-Value Observed: 0.172 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis for phosphotyrosine peptide recognition by protein tyrosine phosphatase 1B.

Jia, Z.Barford, D.Flint, A.J.Tonks, N.K.

(1995) Science 268: 1754-1758

  • DOI: 10.1126/science.7540771
  • Primary Citation of Related Structures:  
    1PTT, 1PTV, 1PTU

  • PubMed Abstract: 
  • The crystal structures of a cysteine-215-->serine mutant of protein tyrosine phosphatase 1B complexed with high-affinity peptide substrates corresponding to an autophosphorylation site of the epidermal growth factor receptor were determined. Peptide binding to the protein phosphatase was accompanied by a conformational change of a surface loop that created a phosphotyrosine recognition pocket and induced a catalytically competent form of the enzyme ...

    The crystal structures of a cysteine-215-->serine mutant of protein tyrosine phosphatase 1B complexed with high-affinity peptide substrates corresponding to an autophosphorylation site of the epidermal growth factor receptor were determined. Peptide binding to the protein phosphatase was accompanied by a conformational change of a surface loop that created a phosphotyrosine recognition pocket and induced a catalytically competent form of the enzyme. The phosphotyrosine side chain is buried within the period and anchors the peptide substrate to its binding site. Hydrogen bonds between peptide main-chain atoms and the protein contribute to binding affinity, and specific interactions of acidic residues of the peptide with basic residues on the surface of the enzyme confer sequence specificity.


    Related Citations: 
    • Crystal Structure of Human Protein Tyrosine Phosphatase 1B
      Barford, D., Flint, A.J., Tonks, N.K.
      (1994) Science 263: 1397

    Organizational Affiliation

    Laboratory of Molecular Biophysics, University of Oxford, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN TYROSINE PHOSPHATASE 1B A321Homo sapiensMutation(s): 1 
Gene Names: PTPN1PTP1B
EC: 3.1.3.48
Find proteins for P18031 (Homo sapiens)
Explore P18031 
Go to UniProtKB:  P18031
NIH Common Fund Data Resources
PHAROS:  P18031
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PTR
Query on PTR

Download Ideal Coordinates CCD File 
A
O-PHOSPHOTYROSINE
C9 H12 N O6 P
DCWXELXMIBXGTH-QMMMGPOBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.172 
  • R-Value Observed: 0.172 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.2α = 90
b = 88.2β = 90
c = 103.6γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 1995-04-21 
  • Released Date: 1996-08-01 
  • Deposition Author(s): Barford, D., Jia, Z.

Revision History  (Full details and data files)

  • Version 1.0: 1996-08-01
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance