2B3O

Crystal structure of human tyrosine phosphatase SHP-1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of human protein-tyrosine phosphatase SHP-1.

Yang, J.Liu, L.He, D.Song, X.Liang, X.Zhao, Z.J.Zhou, G.W.

(2003) J.Biol.Chem. 278: 6516-6520

  • DOI: 10.1074/jbc.M210430200

  • PubMed Abstract: 
  • SHP-1 is a cytosolic protein-tyrosine phosphatase that behaves as a negative regulator in eukaryotic cellular signaling pathways. To understand its regulatory mechanism, we have determined the crystal structure of the C-terminal truncated human SHP-1 ...

    SHP-1 is a cytosolic protein-tyrosine phosphatase that behaves as a negative regulator in eukaryotic cellular signaling pathways. To understand its regulatory mechanism, we have determined the crystal structure of the C-terminal truncated human SHP-1 in the inactive conformation at 2.8-A resolution and refined the structure to a crystallographic R-factor of 24.0%. The three-dimensional structure shows that the ligand-free SHP-1 has an auto-inhibited conformation. Its N-SH2 domain blocks the catalytic domain and keeps the enzyme in the inactive conformation, which supports that the phosphatase activity of SHP-1 is primarily regulated by the N-SH2 domain. In addition, the C-SH2 domain of SHP-1 has a different orientation from and is more flexible than that of SHP-2, which enables us to propose an enzymatic activation mechanism in which the C-SH2 domains of SHPs could be involved in searching for phosphotyrosine activators.


    Organizational Affiliation

    Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein phosphatase, non-receptor type 6
A
532Homo sapiensMutation(s): 0 
Gene Names: PTPN6 (HCP, PTP1C)
EC: 3.1.3.48
Find proteins for P29350 (Homo sapiens)
Go to Gene View: PTPN6
Go to UniProtKB:  P29350
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.233 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 44.736α = 90.00
b = 100.404β = 90.00
c = 149.475γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALAdata scaling
CCP4data scaling
CNSrefinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-10-25
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance