4LZP

Structure of the TIR domain of the immunosuppressor BtpA from Brucella


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structure of the Toll/interleukin 1 receptor (TIR) domain of the immunosuppressive Brucella effector BtpA/Btp1/TcpB

Kaplan-turkoz, B.Koelblen, T.Felix, C.Candusso, M.P.O'callaghan, D.Vergunst, A.C.Terradot, L.

(2013) Febs Lett. 587: 3412-3416

  • DOI: 10.1016/j.febslet.2013.09.007

  • PubMed Abstract: 
  • BtpA/Btp1/TcpB is a virulence factor produced by Brucella species that possesses a Toll interleukin-1 receptor (TIR) domain. Once delivered into the host cell, BtpA interacts with MyD88 to interfere with TLR signalling and modulates microtubule dynam ...

    BtpA/Btp1/TcpB is a virulence factor produced by Brucella species that possesses a Toll interleukin-1 receptor (TIR) domain. Once delivered into the host cell, BtpA interacts with MyD88 to interfere with TLR signalling and modulates microtubule dynamics. Here the crystal structure of the BtpA TIR domain at 3.15 Å is presented. The structure shows a dimeric arrangement of a canonical TIR domain, similar to the Paracoccus denitrificans Tir protein but secured by a unique long N-terminal α-tail that packs against the TIR:TIR dimer. Structure-based mutations and multi-angle light scattering experiments characterized the BtpA dimer conformation in solution. The structure of BtpA will help with studies to understand the mechanisms involved in its interactions with MyD88 and with microtubules.


    Organizational Affiliation

    UMR 5086, BMSSI, CNRS - Université Lyon 1, Institut de Biologie et Chimie des Protéines, 7 passage du Vercors, F-69367, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Putative uncharacterized protein
B, C, A, D
176Brucella melitensis biotype 2 (strain ATCC 23457)N/A
Find proteins for C0RGW8 (Brucella melitensis biotype 2 (strain ATCC 23457))
Go to UniProtKB:  C0RGW8
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.222 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 68.143α = 90.00
b = 73.928β = 90.00
c = 137.645γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
XDSdata scaling
XDSdata reduction
MxCuBEdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-11-06
    Type: Initial release