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
  • Primary Citation of Related Structures:  
    1PHR

  • 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 (PTPase), a cytosolic phosphatase present in many mammalian cells ...

    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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
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)
UniProt
Find proteins for P11064 (Bos taurus)
Explore P11064 
Go to UniProtKB:  P11064
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
B [auth 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

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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