3DLQ

Crystal structure of the IL-22/IL-22R1 complex

• PDB DOI: https://doi.org/10.2210/pdb3DLQ/pdb

• Classification: CYTOKINE/CYTOKINE RECEPTOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2008-06-28 Released: 2008-08-19 
• Deposition Author(s): Bleicher, L., de Moura, P.R., Watanabe, L., Colau, D., Dumoutier, L., Renauld, J.-C., Polikarpov, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.236 
• R-Value Work: 0.192 
• R-Value Observed: 0.195 

Starting Models: experimental

Literature

Crystal structure of the IL-22/IL-22R1 complex and its implications for the IL-22 signaling mechanism

Bleicher, L., de Moura, P.R., Watanabe, L., Colau, D., Dumoutier, L., Renauld, J.-C., Polikarpov, I.

(2008) FEBS Lett 582: 2985-2992

• PubMed: 18675809 
• DOI: https://doi.org/10.1016/j.febslet.2008.07.046
• Primary Citation of Related Structures:  
  3DLQ


• PubMed Abstract: 
  

  Interleukin-22 (IL-22) is a member of the interleukin-10 cytokine family, which is involved in anti-microbial defenses, tissue damage protection and repair, and acute phase responses. Its signaling mechanism involves the sequential binding of IL-22 to interleukin-22 receptor 1 (IL-22R1), and of this dimer to interleukin-10 receptor 2 (IL-10R2) extracellular domain. We report a 1.9A crystal structure of the IL-22/IL-22R1 complex, revealing crucial interacting residues at the IL-22/IL-22R1 interface. Functional importance of key residues was confirmed by site-directed mutagenesis and functional studies. Based on the X-ray structure of the binary complex, we discuss a molecular basis of the IL-22/IL-22R1 recognition by IL-10R2.

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Organizational Affiliation: 

Instituto de Física de São Carlos, Universidade de São Paulo, CEP 13560-970 São Carlos, SP, Brazil.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 41.28 kDa 
• Atom Count: 2,998 
• Modelled Residue Count: 332 
• Deposited Residue Count: 362 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Interleukin-22	A [auth I]	151	Homo sapiens	Mutation(s): 1  Gene Names: IL22
UniProt & NIH Common Fund Data Resources
Find proteins for Q9GZX6 (Homo sapiens) Explore Q9GZX6  Go to UniProtKB:  Q9GZX6
PHAROS:  Q9GZX6 GTEx:  ENSG00000127318

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Interleukin-22 receptor subunit alpha-1	B [auth R]	211	Homo sapiens	Mutation(s): 1  Gene Names: IL22RA1
UniProt & NIH Common Fund Data Resources
Find proteins for Q8N6P7 (Homo sapiens) Explore Q8N6P7  Go to UniProtKB:  Q8N6P7
PHAROS:  Q8N6P7 GTEx:  ENSG00000142677

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.236 
• R-Value Work: 0.192 
• R-Value Observed: 0.195 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.244	α = 90
b = 79.244	β = 94.63
c = 91.996	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-08-19 
Deposition Author(s): Bleicher, L., de Moura, P.R., Watanabe, L., Colau, D., Dumoutier, L., Renauld, J.-C., Polikarpov, I.

Revision History  

• Version 1.0: 2008-08-19
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-10-25
  Changes: Refinement description
• Version 1.3: 2021-11-10
  Changes: Database references
• Version 1.4: 2023-11-01
  Changes: Data collection, Refinement description
• Version 1.5: 2024-10-30
  Changes: Structure summary