2ILK

CRYSTAL STRUCTURE OF HUMAN INTERLEUKIN-10 AT 1.6 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of human interleukin-10 at 1.6 A resolution and a model of a complex with its soluble receptor.

Zdanov, A.Schalk-Hihi, C.Wlodawer, A.

(1996) Protein Sci 5: 1955-1962

  • DOI: 10.1002/pro.5560051001
  • Primary Citation of Related Structures:  
    2ILK

  • PubMed Abstract: 
  • The crystal structure of human interleukin-10 (IL-10) was refined at 1.6 A resolution against X-ray diffraction data collected at 100 K with the use of synchrotron radiation. Although similar to the IL-10 structure determined previously at room temperature, this low-temperature IL-10 structure contains, in addition, four N-terminal residues, three sulfate anions, and 175 extra water molecules ...

    The crystal structure of human interleukin-10 (IL-10) was refined at 1.6 A resolution against X-ray diffraction data collected at 100 K with the use of synchrotron radiation. Although similar to the IL-10 structure determined previously at room temperature, this low-temperature IL-10 structure contains, in addition, four N-terminal residues, three sulfate anions, and 175 extra water molecules. Whereas the main-chain conformation is preserved, about 30% of the side chains, most of them on the protein surface, assume different conformations. A computer model of a complex of IL-10 with its two soluble receptors was generated based on the topological similarity of IL-10 to interferon-gamma. The contact region between the cytokine and each receptor shows excellent complementarity of polar and hydrophobic interactions, suggesting that the model is generally correct and should be useful in guiding mutagenesis experiments.


    Related Citations: 
    • Crystal Structure of Interleukin-10 Reveals the Functional Dimer with an Unexpected Topological Similarity to Interferon Gamma
      Zdanov, A., Schalk-Hihi, C., Gustchina, A., Tsang, M., Weatherbee, J., Wlodawer, A.
      (1995) Structure 3: 591

    Organizational Affiliation

    Macromolecular Structure Laboratory, NCI-Frederick Cancer Research and Development Center, ABL-Basic Research Program, Frederick, Maryland 21702, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
INTERLEUKIN-10A160Homo sapiensMutation(s): 0 
Gene Names: IL10
UniProt & NIH Common Fund Data Resources
Find proteins for P22301 (Homo sapiens)
Explore P22301 
Go to UniProtKB:  P22301
PHAROS:  P22301
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP22301
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A],
D [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.53α = 90
b = 69.53β = 90
c = 70.54γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PROFFTrefinement

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-10-14
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance