1YKB Cytokine date Jan 17, 2005
title Crystal Structure Of Insect Cell Expressed Il-22
authors T.Xu, N.J.Logsdon, M.R.Walter
compound source
Molecule: Protein (Interleukin-22)
Chain: A, B, C, D, E, F
Synonym: Il-22, Il-10-Related T-Cell-Derived Inducible Fact Tif, Unq3099pro10096;
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Il22, Iltif
Expression_system_common: Insect
symmetry Space Group: P 1 21 1
R_factor 0.232 R_Free 0.265
length a length b length c angle alpha angle beta angle gamma
64.877 62.227 139.524 90.00 91.35 90.00
method X-Ray Diffractionresolution 2.60 Å
ligand FUC, MAN, NAG enzyme
F, A, D, C, E, B

Primary referenceStructure of insect-cell-derived IL-22., Xu T, Logsdon NJ, Walter MR, Acta Crystallogr D Biol Crystallogr 2005 Jul;61(Pt 7):942-50. Epub 2005, Jun 24. PMID:15983417
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (150 Kb) [Save to disk]
  • Biological Unit Coordinates (1ykb.pdb1.gz) 143 Kb
  • LPC: Ligand-Protein Contacts for 1YKB
  • CSU: Contacts of Structural Units for 1YKB
  • Likely Quarternary Molecular Structure file(s) for 1YKB
  • Structure Factors (288 Kb)
  • Retrieve 1YKB in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1YKB from S2C, [Save to disk]
  • Re-refined 1ykb structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
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  • Visual 3D analysis of 1YKB
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  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1YKB, from MSDmotif at EBI
  • Fold representative 1ykb from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1ykb_E] [1ykb_B] [1ykb_A] [1ykb_C] [1ykb_F] [1ykb_D] [1ykb]
  • SWISS-PROT database: [Q9GZX6]
  • Domain organization of [IL22_HUMAN] by SWISSPFAM
  • Domain found in 1YKB: [IL10 ] by SMART
  • Other resources with information on 1YKB
  • Community annotation for 1YKB at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
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