2JJW

Structure of human signal regulatory protein (sirp) gamma


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Paired Receptor Specificity Explained by Structures of Signal Regulatory Proteins Alone and Complexed with Cd47.

Hatherley, D.Graham, S.C.Turner, J.Harlos, K.Stuart, D.I.Barclay, A.N.

(2008) Mol.Cell 31: 266

  • DOI: 10.1016/j.molcel.2008.05.026
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • CD47 is a widely distributed cell-surface protein that acts a marker of self through interactions of myeloid and neural cells. We describe the high-resolution X-ray crystallographic structures of the immunoglobulin superfamily domain of CD47 alone an ...

    CD47 is a widely distributed cell-surface protein that acts a marker of self through interactions of myeloid and neural cells. We describe the high-resolution X-ray crystallographic structures of the immunoglobulin superfamily domain of CD47 alone and in complex with the N-terminal ligand-binding domain of signal regulatory protein alpha (SIRPalpha). The unusual and convoluted interacting face of CD47, comprising the N terminus and loops at the end of the domain, intercalates with the corresponding regions in SIRPalpha. We have also determined structures of the N-terminal domains of SIRPbeta, SIRPbeta(2), and SIRPgamma; proteins that are closely related to SIRPalpha but bind CD47 with negligible or reduced affinity. These results explain the specificity of CD47 for the SIRP family of paired receptors in atomic detail. Analysis of SIRPalpha polymorphisms suggests that these, as well as the activating SIRPs, may have evolved to counteract pathogen binding to the inhibitory SIRPalpha receptor.


    Organizational Affiliation

    Sir William Dunn School of Pathology, University of Oxford, Oxford, OX1 3RE, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SIGNAL REGULATORY PROTEIN GAMMA
A
127Homo sapiensMutation(s): 0 
Gene Names: SIRPG (SIRPB2)
Find proteins for Q9P1W8 (Homo sapiens)
Go to Gene View: SIRPG
Go to UniProtKB:  Q9P1W8
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.228 
  • Space Group: P 64 2 2
Unit Cell:
Length (Å)Angle (°)
a = 76.390α = 90.00
b = 76.390β = 90.00
c = 78.240γ = 120.00
Software Package:
Software NamePurpose
XSCALEdata scaling
REFMACrefinement
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-08-05
    Type: Initial release
  • Version 1.1: 2011-05-07
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance