7FCL

Zebrafish SIGIRR TIR domain

• PDB DOI: https://doi.org/10.2210/pdb7FCL/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Danio rerio
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2021-07-15 Released: 2022-07-27 
• Deposition Author(s): Wang, X., Zhou, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.04 Å
• R-Value Free: 0.273 
• R-Value Work: 0.239 
• R-Value Observed: 0.241 

Starting Model: experimental

Literature

Structural basis of the IL-1 receptor TIR domain-mediated IL-1 signaling

Zhou, J., Xiao, Y., Ren, Y., Ge, J., Wang, X.

(2022) iScience 25: 104508

• DOI: https://doi.org/10.1016/j.isci.2022.104508

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 55.25 kDa 
• Atom Count: 3,621 
• Modelled Residue Count: 438 
• Deposited Residue Count: 465 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SIGIRR protein	A, B, C	155	Danio rerio	Mutation(s): 1  Gene Names: sigirr
UniProt
Find proteins for K9K3G6 (Danio rerio) Explore K9K3G6  Go to UniProtKB:  K9K3G6

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.04 Å
• R-Value Free: 0.273 
• R-Value Work: 0.239 
• R-Value Observed: 0.241 
• Space Group: C 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 83.996	α = 90
b = 145.364	β = 90
c = 75.663	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2022-07-27 
Deposition Author(s): Wang, X., Zhou, J.

Revision History  

• Version 1.0: 2022-07-27
  Type: Initial release
  
• Version 1.1: 2022-08-10
  Changes: Database references
• Version 1.2: 2023-11-29
  Changes: Data collection, Refinement description
• Version 1.3: 2024-11-13
  Changes: Structure summary