1RPM

HUMAN RECEPTOR PROTEIN TYROSINE PHOSPHATASE MU, DOMAIN 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The crystal structure of domain 1 of receptor protein-tyrosine phosphatase mu.

Hoffmann, K.M.Tonks, N.K.Barford, D.

(1997) J Biol Chem 272: 27505-27508

  • DOI: 10.1074/jbc.272.44.27505
  • Primary Citation of Related Structures:  
    1RPM

  • PubMed Abstract: 
  • Receptor-like protein-tyrosine phosphatases (RPTPs) play important roles in regulating intracellular processes. We have been investigating the regulation and function of RPTPmu, a receptor-like PTP related to the Ig superfamily of cell adhesion molecules ...

    Receptor-like protein-tyrosine phosphatases (RPTPs) play important roles in regulating intracellular processes. We have been investigating the regulation and function of RPTPmu, a receptor-like PTP related to the Ig superfamily of cell adhesion molecules. Recently, the crystal structure of a dimer of the membrane proximal domain of RPTPalpha (RPTPalpha D1) was described (Bilwes, A. M., den Hertog, J., Hunter, T., and Noel J. P. (1996) Nature 382, 555-559). Within this crystal structure, the catalytic site of each subunit of the dimer is sterically blocked by the insertion of the N-terminal helix-turn-helix segment of the dyad-related monomer. It was proposed that dimerization would lead to inhibition of catalytic activity and may provide a paradigm for the regulation of the RPTP family. We have determined the crystal structure, to 2.3 A resolution, of RPTPmu D1, which shares 46% sequence identity with that of RPTPalpha D1. Although the tertiary structures of RPTPalpha D1 and RPTPmu D1 are very similar, with a root mean square deviation between equivalent Calpha atoms of 1.1 A, the quaternary structures of these two proteins are different. Neither the catalytic site nor the N-terminal helix-turn-helix segment of RPTPmu D1 participates in protein-protein interactions. The catalytic site of RPTPmu D1 is unhindered and adopts an open conformation similar to that of the cytosolic PTP, PTP1B (Barford, D., Flint, A. J., and Tonks, N. K. (1994) Science 263, 1397-1404). We propose that dimerization-induced modulation of RPTP activity may not be a general feature of this family of enzymes.


    Organizational Affiliation

    Laboratory of Molecular Biophysics, University of Oxford, Rex Richards Building, South Parks Road, Oxford OX1 3QU, United Kingdom.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RECEPTOR PROTEIN TYROSINE PHOSPHATASE MU AB278Homo sapiensMutation(s): 0 
Gene Names: PTPRMPTPRL1
EC: 3.1.3.48
Find proteins for P28827 (Homo sapiens)
Explore P28827 
Go to UniProtKB:  P28827
NIH Common Fund Data Resources
PHAROS:  P28827
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 95.538α = 90
b = 36.292β = 95.66
c = 95.381γ = 90
Software Package:
Software NamePurpose
AMoREphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-04-01
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance