1PHR

THE CRYSTAL STRUCTURE OF A LOW MOLECULAR PHOSPHOTYROSINE PROTEIN PHOSPHATASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.167 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The crystal structure of a low-molecular-weight phosphotyrosine protein phosphatase.

Su, X.D.Taddei, N.Stefani, M.Ramponi, G.Nordlund, P.

(1994) Nature 370: 575-578

  • DOI: 10.1038/370575a0
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Protein tyrosine phosphorylation and dephosphorylation are central reactions for control of cellular division, differentiation and development. Here we describe the crystal structure of a low-molecular-weight phosphotyrosine protein phosphatase (PTPa ...

    Protein tyrosine phosphorylation and dephosphorylation are central reactions for control of cellular division, differentiation and development. Here we describe the crystal structure of a low-molecular-weight phosphotyrosine protein phosphatase (PTPase), a cytosolic phosphatase present in many mammalian cells. The enzyme catalyses the dephosphorylation of phosphotyrosine-containing substrates, and overexpression of the protein in normal and transformed cells inhibits cell proliferation. The structure of the low-molecular-weight PTPase reveals an alpha/beta protein containing a phosphate-binding loop motif at the amino end of helix alpha 1. This motif includes the essential active-site residues Cys 12 and Arg 18 and bears striking similarities to the active-site motif recently described in the structure of human PTP1B. The structure of the low-molecular-weight PTPase supports a reaction mechanism involving the conserved Cys 12 as an attacking nucleophile in an in-line associative mechanism. The structure also suggests a catalytic role for Asp 129 in the reaction cycle.


    Related Citations: 
    • Crystallisation of a Low Molecular Weight Phosphotyrosine Protein Phosphatase from Bovine Liver
      Su, X.-D., Agango, E.G., Taddei, N., Bucciantini, M., Stefani, M., Ramponi, G., Nordlund, P.
      (1994) FEBS Lett 343: 107

    Organizational Affiliation

    Department of Molecular Biology, University of Stockholm, Sweden.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LOW MOLECULAR WEIGHT PHOSPHOTYROSINE PROTEIN PHOSPHATASEA157Bos taurusMutation(s): 0 
Gene Names: ACP1
EC: 3.1.3.48 (PDB Primary Data), 3.1.3.2 (UniProt)
Find proteins for P11064 (Bos taurus)
Explore P11064 
Go to UniProtKB:  P11064
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.167 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.3α = 90
b = 62.2β = 90
c = 62.7γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-07-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance