3ROF

Crystal Structure of the S. aureus Protein Tyrosine Phosphatase PtpA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.03 Å
  • R-Value Free: 0.169 
  • R-Value Work: 0.149 
  • R-Value Observed: 0.150 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure and substrate recognition of the Staphylococcus aureus protein tyrosine phosphatase PtpA.

Vega, C.Chou, S.Engel, K.Harrell, M.E.Rajagopal, L.Grundner, C.

(2011) J Mol Biol 413: 24-31

  • DOI: 10.1016/j.jmb.2011.08.015
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Phosphosignaling through pSer/pThr/pTyr is emerging as a common signaling mechanism in prokaryotes. The human pathogen Staphylococcus aureus produces two low-molecular-weight protein tyrosine phosphatases (PTPs), PtpA and PtpB, with unknown functions ...

    Phosphosignaling through pSer/pThr/pTyr is emerging as a common signaling mechanism in prokaryotes. The human pathogen Staphylococcus aureus produces two low-molecular-weight protein tyrosine phosphatases (PTPs), PtpA and PtpB, with unknown functions. To provide the structural context for understanding PtpA function and substrate recognition, establish PtpA's structural relations within the PTP family, and provide a framework for the design of specific inhibitors, we solved the crystal structure of PtpA at 1 Å resolution. While PtpA adopts the common, conserved PTP fold and shows close overall similarity to eukaryotic PTPs, several features in the active site and surface organization are unique and can be explored to design selective inhibitors. A peptide bound in the active site mimics a phosphotyrosine substrate, affords insight into substrate recognition, and provides a testable substrate prediction. Genetic deletion of ptpA or ptpB does not affect in vitro growth or cell wall integrity, raising the possibility that PtpA and PtpB have specialized functions during infection.


    Organizational Affiliation

    Seattle Biomedical Research Institute, Seattle, WA 98109, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Low molecular weight protein-tyrosine-phosphatase ptpA
A
158Staphylococcus aureusMutation(s): 0 
Gene Names: ptpA
EC: 3.1.3.48
Find proteins for P0C5D2 (Staphylococcus aureus)
Go to UniProtKB:  P0C5D2
  • Find similar proteins by: Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Expression tag cleaved from protein-tyrosine-phosphatase ptpA
B
7Staphylococcus aureusMutation(s): 0 
Gene Names: ptpA
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.03 Å
  • R-Value Free: 0.169 
  • R-Value Work: 0.149 
  • R-Value Observed: 0.150 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 34.81α = 90
b = 35.1β = 91.05
c = 65.51γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
XDSdata reduction
XDSdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-09-07
    Type: Initial release
  • Version 1.1: 2012-05-23
    Changes: Database references
  • Version 1.2: 2017-11-08
    Changes: Advisory, Refinement description