1AU1

HUMAN INTERFERON-BETA CRYSTAL STRUCTURE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.223 

wwPDB Validation 3D Report Full Report



Literature

The crystal structure of human interferon beta at 2.2-A resolution.

Karpusas, M.Nolte, M.Benton, C.B.Meier, W.Lipscomb, W.N.Goelz, S.

(1997) Proc Natl Acad Sci U S A 94: 11813-11818

  • DOI: 10.1073/pnas.94.22.11813
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Type I interferons (IFNs) are helical cytokines that have diverse biological activities despite the fact that they appear to interact with the same receptor system. To achieve a better understanding of the structural basis for the different activitie ...

    Type I interferons (IFNs) are helical cytokines that have diverse biological activities despite the fact that they appear to interact with the same receptor system. To achieve a better understanding of the structural basis for the different activities of alpha and beta IFNs, we have determined the crystal structure of glycosylated human IFN-beta at 2.2-A resolution by molecular replacement. The molecule adopts a fold similar to that of the previously determined structures of murine IFN-beta and human IFN-alpha2b but displays several distinct structural features. Like human IFN-alpha2b, human IFN-beta contains a zinc-binding site at the interface of the two molecules in the asymmetric unit, raising the question of functional relevance for IFN-beta dimers. However, unlike the human IFN-alpha2b dimer, in which homologous surfaces form the interface, human IFN-beta dimerizes with contact surfaces from opposite sides of the molecule. The relevance of the structure to the effects of point mutations in IFN-beta at specific exposed residues is discussed. A potential role of ligand-ligand interactions in the conformational assembly of IFN receptor components is discussed.


    Organizational Affiliation

    Biogen, Inc., 12 Cambridge Center, Cambridge, MA 02142, USA. Michael_Karpusas@biogen.com



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INTERFERON-BETAA, B166Homo sapiensMutation(s): 0 
Gene Names: IFNB1IFBIFNB
Find proteins for P01574 (Homo sapiens)
Explore P01574 
Go to UniProtKB:  P01574
NIH Common Fund Data Resources
PHAROS  P01574
Protein Feature View
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  • Reference Sequence
Oligosaccharides
Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation
beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-2)-beta-D-glucopyranose-(1-3)-beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-[alpha-D-quinovopyranose-(1-6)]beta-D-glucopyranose
C
7 N-Glycosylation
Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation
alpha-D-quinovopyranose-(1-6)-beta-D-glucopyranose
D
2 N-Glycosylation
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.223 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.3α = 90
b = 65.9β = 90
c = 121.5γ = 90
Software Package:
Software NamePurpose
bioteXdata collection
AMoREphasing
X-PLORmodel building
X-PLORrefinement
bioteXdata reduction
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-06-17
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2017-10-25
    Changes: Advisory, Atomic model, Refinement description, Structure summary
  • Version 3.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary