1O7Z

Crystal structure of IP-10 T-form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.279 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structures of Oligomeric Forms of the Ip-10/Cxcl10 Chemokine

Swaminathan, G.J.Holloway, D.E.Colvin, R.A.Campanella, G.K.Papageorgiou, A.C.Luster, A.D.Acharya, K.R.

(2003) Structure 11: 521

  • Primary Citation of Related Structures:  1O7Y, 1O80

  • PubMed Abstract: 
  • We have determined the structure of wild-type IP-10 from three crystal forms. The crystals provide eight separate models of the IP-10 chain, all differing substantially from a monomeric IP-10 variant examined previously by NMR spectroscopy. In each c ...

    We have determined the structure of wild-type IP-10 from three crystal forms. The crystals provide eight separate models of the IP-10 chain, all differing substantially from a monomeric IP-10 variant examined previously by NMR spectroscopy. In each crystal form, IP-10 chains form conventional beta sheet dimers, which, in turn, form a distinct tetrameric assembly. The M form tetramer is reminiscent of platelet factor 4, whereas the T and H forms feature a novel twelve-stranded beta sheet. Analytical ultracentrifugation indicates that, in free solution, IP-10 exists in a monomer-dimer equilibrium with a dissociation constant of 9 microM. We propose that the tetrameric structures may represent species promoted by the binding of glycosaminoglycans. The binding sites for several IP-10-neutralizing mAbs have also been mapped.


    Organizational Affiliation

    Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SMALL INDUCIBLE CYTOKINE B10
A, B
77Homo sapiensGene Names: CXCL10 (INP10, SCYB10)
Find proteins for P02778 (Homo sapiens)
Go to Gene View: CXCL10
Go to UniProtKB:  P02778
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.279 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 59.437α = 90.00
b = 59.437β = 90.00
c = 121.708γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSrefinement
AMoREphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-05-08
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance