2QHL

Crystal Structure of Novel Immune-Type Receptor 10 Extracellular Fragment from Ictalurus punctatus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.56 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A bony fish immunological receptor of the NITR multigene family mediates allogeneic recognition.

Cannon, J.P.Haire, R.N.Magis, A.T.Eason, D.D.Winfrey, K.N.Hernandez Prada, J.A.Bailey, K.M.Jakoncic, J.Litman, G.W.Ostrov, D.A.

(2008) Immunity 29: 228-237

  • DOI: 10.1016/j.immuni.2008.05.018
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Novel immune-type receptors (NITRs) comprise an exceptionally large, diversified family of activating and inhibitory receptors that has been identified in bony fish. Here, we characterized the structure of an activating NITR that is expressed by a cy ...

    Novel immune-type receptors (NITRs) comprise an exceptionally large, diversified family of activating and inhibitory receptors that has been identified in bony fish. Here, we characterized the structure of an activating NITR that is expressed by a cytotoxic natural killer (NK)-like cell line and that specifically binds an allogeneic B cell target. A single amino acid residue within the NITR immunoglobulin variable (V)-type domain accounts for specificity of the interaction. Structures solved by X-ray crystallography revealed that the V-type domains of NITRs form homodimers resembling rearranging antigen-binding receptor heterodimers. CDR1 elements of both subunits of NITR dimers form ligand-binding surfaces that determine specificity for the nonself target. In the evolution of immune function, it appears that a specific NK type of innate recognition may be mediated by a complex germline multigene family of V structures resembling those that are somatically diversified in adaptive immunological responses.


    Organizational Affiliation

    Department of Pediatrics, University of South Florida College of Medicine, St. Petersburg, FL 33701, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Novel immune-type receptor 10
A, B, C, D, E
111Ictalurus punctatusMutation(s): 0 
Gene Names: NITR10 (nitr10)
Find proteins for Q8UWK5 (Ictalurus punctatus)
Go to UniProtKB:  Q8UWK5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.56 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.196 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 90.246α = 90.00
b = 90.246β = 90.00
c = 136.352γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
HKL-2000data reduction
PDB_EXTRACTdata extraction
DENZOdata reduction
MOLREPphasing
SHELXphasing
CNSrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-06-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-18
    Type: Refinement description