3f62

X-ray diffraction
2Å resolution

Crystal Structure of Human IL-18 in complex with Ectromelia virus IL-18 Binding Protein

Released:
Source organisms:
Primary publication:
Structural basis for antagonism of human interleukin 18 by poxvirus interleukin 18-binding protein.
Proc Natl Acad Sci U S A 105 20711-5 (2008)
PMID: 19104048

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-171914 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Putative secreted protein, homologue of variola D5 Chain: A
Molecule details ›
Chain: A
Length: 109 amino acids
Theoretical weight: 12.37 KDa
Source organism: Ectromelia virus
Expression system: Escherichia coli
UniProt:
  • Canonical: Q85319 (Residues: 21-121; Coverage: 73%)
Gene names: EVHE019, EVI019, EVM013, EVMH019, p16
Sequence domains: Orthopoxvirus interleukin 18 binding protein
Structure domains: Immunoglobulins
Interleukin-18 Chain: B
Molecule details ›
Chain: B
Length: 158 amino acids
Theoretical weight: 18.23 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: Q14116 (Residues: 37-193; Coverage: 81%)
Gene names: IGIF, IL18, IL1F4
Sequence domains: Interleukin-1 / 18
Structure domains: Trefoil (Acidic Fibroblast Growth Factor, subunit A)

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-ID
Spacegroup: P212121
Unit cell:
a: 36.356Å b: 69.21Å c: 104.832Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.191 0.189 0.235
Expression system: Escherichia coli