Biological Assembly 1  

 3D View: Structure

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 18.36 kDa 
• Atom Count: 1269 
• Residue Count: 149 
• Unique protein chains: 1

1FYX

CRYSTAL STRUCTURE OF P681H MUTANT OF TIR DOMAIN OF HUMAN TLR2

• DOI: 10.2210/pdb1FYX/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2000-10-03 Released: 2000-11-22 
• Deposition Author(s): Xu, Y., Tao, X., Shen, B., Horng, T., Medzhitov, R., Manley, J.L., Tong, L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.284 
• R-Value Work: 0.242 
• R-Value Observed: 0.242 

Literature

Structural basis for signal transduction by the Toll/interleukin-1 receptor domains.

Xu, Y., Tao, X., Shen, B., Horng, T., Medzhitov, R., Manley, J.L., Tong, L.

(2000) Nature 408: 111-115

• PubMed: 11081518 
• DOI: 10.1038/35040600
• Primary Citation of Related Structures:  
  1FYX, 1FYW, 1FYV


• PubMed Abstract: 
  

Toll-like receptors (TLRs) and the interleukin-1 receptor superfamily (IL-1Rs) are integral to both innate and adaptive immunity for host defence. These receptors share a conserved cytoplasmic domain, known as the TIR domain. A single-point mutation in the TIR domain of murine TLR4 (Pro712His, the Lps(d) mutation) abolishes the host immune response to lipopolysaccharide (LPS), and mutation of the equivalent residue in TLR2, Pro681His, disrupts signal transduction in response to stimulation by yeast and gram-positive bacteria. Here we report the crystal structures of the TIR domains of human TLR1 and TLR2 and of the Pro681His mutant of TLR2. The structures have a large conserved surface patch that also contains the site of the Lps(d) mutation. Mutagenesis and functional studies confirm that residues in this surface patch are crucial for receptor signalling. The Lps(d) mutation does not disturb the structure of the TIR domain itself. Instead, structural and functional studies indicate that the conserved surface patch may mediate interactions with the down-stream MyD88 adapter molecule, and that the Lps(d) mutation may abolish receptor signalling by disrupting this recruitment.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TOLL-LIKE RECEPTOR 2	A	149	Homo sapiens	Mutation(s): 6  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

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CAS	A	L-PEPTIDE LINKING	C5 H12 As N O2 S		CYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 0.284 
• R-Value Work: 0.242 
• R-Value Observed: 0.242 
• Space Group: P 6₂ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 122.1	α = 90
b = 122.1	β = 90
c = 92.1	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-10-03 
• Released Date: 2000-11-22 
Deposition Author(s): Xu, Y., Tao, X., Shen, B., Horng, T., Medzhitov, R., Manley, J.L., Tong, L.

Revision History 

• Version 1.0: 2000-11-22
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2017-10-04
  Changes: Advisory, Refinement description
• Version 1.4: 2018-01-31
  Changes: Experimental preparation