1YKB

Crystal Structure of Insect Cell Expressed IL-22


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.232 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of insect-cell-derived IL-22.

Xu, T.Logsdon, N.J.Walter, M.R.

(2005) Acta Crystallogr.,Sect.D 61: 942-950

  • DOI: 10.1107/S0907444905009601

  • PubMed Abstract: 
  • The crystal structure of interleukin-22 expressed in Drosophila melanogaster S2 cells (IL-22(Dm)) has been determined at 2.6 A resolution. IL-22(Dm) crystals contain six molecules in the asymmetric unit. Comparison of IL-22(Dm) and IL-22(Ec) (interle ...

    The crystal structure of interleukin-22 expressed in Drosophila melanogaster S2 cells (IL-22(Dm)) has been determined at 2.6 A resolution. IL-22(Dm) crystals contain six molecules in the asymmetric unit. Comparison of IL-22(Dm) and IL-22(Ec) (interleukin-22 produced in Escherichia coli) structures reveals that N-linked glycosylation causes only minor structural changes to the cytokine. However, 1-4 A main-chain differences are observed between the six IL-22(Dm) monomers at regions corresponding to the IL-22R1 and IL-10R2 binding sites. The structure of the carbohydrate and the conformational variation of IL22(Dm) provide new insights into IL-22 receptor recognition.


    Organizational Affiliation

    Center for Biophysical Sciences and Engineering, University of Alabama at Birmingham, Birmingham, AL 35294, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (Interleukin-22)
A, B, C, D, E, F
142Homo sapiensMutation(s): 0 
Gene Names: IL22 (ILTIF, ZCYTO18)
Find proteins for Q9GZX6 (Homo sapiens)
Go to Gene View: IL22
Go to UniProtKB:  Q9GZX6
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAN
Query on MAN

Download SDF File 
Download CCD File 
D
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
FUC
Query on FUC

Download SDF File 
Download CCD File 
A, D
ALPHA-L-FUCOSE
C6 H12 O5
SHZGCJCMOBCMKK-SXUWKVJYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, C, D, E, F
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.232 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 64.877α = 90.00
b = 62.227β = 91.35
c = 139.524γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
CNSrefinement
BEASTphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-07-12
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance