1FYH

1:1 COMPLEX BETWEEN AN INTERFERON GAMMA SINGLE-CHAIN VARIANT AND ITS RECEPTOR

• PDB DOI: https://doi.org/10.2210/pdb1FYH/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2000-09-29 Released: 2000-10-11 
• Deposition Author(s): Randal, M., Kossiakoff, A.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.04 Å
• R-Value Free: 0.246 
• R-Value Work: 0.194 
• R-Value Observed: 0.241 

Literature

The structure and activity of a monomeric interferon-gamma:alpha-chain receptor signaling complex.

Randal, M., Kossiakoff, A.A.

(2001) Structure 9: 155-163

• PubMed: 11250200 
• DOI: https://doi.org/10.1016/s0969-2126(01)00567-6
• Primary Citation of Related Structures:  
  1FYH


• PubMed Abstract: 
  

  Interferon-gamma (IFN-gamma) is a homodimeric cytokine that exerts its various activities by inducing the aggregation of two different receptors. The alpha chain receptor (IFN-gammaRalpha) is a high affinity receptor that binds to IFN-gamma in a symmetric bivalent manner to form a stable, intermediate 1:2 complex. This intermediate forms a binding template for the subsequent binding of two copies of the second receptor, beta chain receptor (IFN-gammaRbeta), producing the active 1:2:2 signaling complex.

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Organizational Affiliation: 

Graduate Group in Biophysics, University of California, 94000, San Francisco, CA, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 112.13 kDa 
• Atom Count: 7,687 
• Modelled Residue Count: 884 
• Deposited Residue Count: 974 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Interferon gamma	A, C [auth D]	258	Homo sapiens	Mutation(s): 1  Gene Names: IFNG
UniProt & NIH Common Fund Data Resources
Find proteins for P01579 (Homo sapiens) Explore P01579  Go to UniProtKB:  P01579
PHAROS:  P01579 GTEx:  ENSG00000111537

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Interferon gamma receptor 1	B, D [auth E]	229	Homo sapiens	Mutation(s): 0  Gene Names: IFNGR1
UniProt & NIH Common Fund Data Resources
Find proteins for P15260 (Homo sapiens) Explore P15260  Go to UniProtKB:  P15260
PHAROS:  P15260 GTEx:  ENSG00000027697

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	E [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.04 Å
• R-Value Free: 0.246 
• R-Value Work: 0.194 
• R-Value Observed: 0.241 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 72.94	α = 90
b = 107.6	β = 97.94
c = 85.08	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-10-11 
Deposition Author(s): Randal, M., Kossiakoff, A.A.

Revision History  

• Version 1.0: 2000-10-11
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-06-21
  Changes: Database references, Source and taxonomy, Structure summary