Biological Assembly 1  

 3D View: Structure

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 generated by PISA (software)

Biological Assembly 2  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 87.62 kDa 
• Atom Count: 5824 
• Residue Count: 689 
• Unique protein chains: 1

1O77

CRYSTAL STRUCTURE OF THE C713S MUTANT OF THE TIR DOMAIN OF HUMAN TLR2

• DOI: 10.2210/pdb1O77/pdb

• Classification: IMMUNE SYSTEM/MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2002-10-24 Released: 2002-11-21 
• Deposition Author(s): Tao, X., Xu, Y., Ye, Z., Beg, A.A., Tong, L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.20 Å
• R-Value Free: 0.315 
• R-Value Work: 0.249 
• R-Value Observed: 0.249 

Literature

An Extensively Associated Dimer in the Structure of the C713S Mutant of the Tir Domain of Human Tlr2

Tao, X., Xu, Y., Zheng, Y., Beg, A.A., Tong, L.

(2002) Biochem Biophys Res Commun 299: 216

• PubMed: 12437972 
• DOI: 10.1016/s0006-291x(02)02581-0
• Primary Citation of Related Structures:  
  1O77


• PubMed Abstract: 
  

The Toll/interleukin-1 receptor (TIR) domains are conserved modules in the intracellular regions of the Toll-like receptors (TLRs) and interleukin-1 receptors (IL-1Rs). The domains are crucial for the signal transduction by these receptors, through homotypic interactions among the receptor and the downstream adapter TIR domains. Previous studies showed that the BB loop in the structure of the TIR domain forms a prominent conserved feature on the surface and is important for receptor signaling. Here we report the crystal structure of the C713S mutant of the TIR domain of human TLR2. An extensively associated dimer is observed in the crystal structure and mutations of several residues in this dimer interface abolished the function of the receptor. Moreover, the structure shows that the BB loop can adopt different conformations, which are required for the formation of this dimer. This asymmetric dimer might represent the TLR2:TLRx heterodimer in the function of this receptor.

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Organizational Affiliation: 

Department of Biological Sciences, Columbia University, 10027, New York, NY, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TOLL-LIKE RECEPTOR 2	A, B, C, D, E	146	Homo sapiens	Mutation(s): 1  Gene Names: TLR2, TIL4 EC: 3.2.2.6
Find proteins for O60603 (Homo sapiens) Explore O60603  Go to UniProtKB:  O60603
NIH Common Fund Data Resources
PHAROS:  O60603 GTEx:  ENSG00000137462

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.20 Å
• R-Value Free: 0.315 
• R-Value Work: 0.249 
• R-Value Observed: 0.249 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 112.3	α = 90
b = 112.3	β = 90
c = 362.8	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
COMO	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-10-24 
• Released Date: 2002-11-21 
Deposition Author(s): Tao, X., Xu, Y., Ye, Z., Beg, A.A., Tong, L.

Revision History 

• Version 1.0: 2002-11-21
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance