1AU1

HUMAN INTERFERON-BETA CRYSTAL STRUCTURE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 2.0 of the entry. See complete history

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.USA 94: 11813-11818


  • 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-BETA
A, B
166Homo sapiensGene Names: IFNB1 (IFB, IFNB)
Find proteins for P01574 (Homo sapiens)
Go to Gene View: IFNB1
Go to UniProtKB:  P01574
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
BGC
Query on BGC

Download SDF File 
Download CCD File 
A, B
BETA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-VFUOTHLCSA-N
 Ligand Interaction
G6D
Query on G6D

Download SDF File 
Download CCD File 
A, B
6-DEOXY-ALPHA-D-GLUCOSE
D-Quinovose
C6 H12 O5
SHZGCJCMOBCMKK-DVKNGEFBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.223 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 55.300α = 90.00
b = 65.900β = 90.00
c = 121.500γ = 90.00
Software Package:
Software NamePurpose
bioteXdata collection
X-PLORmodel building
X-PLORphasing
bioteXdata reduction
AMoREphasing
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-06-17
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 2.0: 2017-10-25
    Type: Advisory, Atomic model, Refinement description, Structure summary