Structure analysis

Crystal structure of human IL-18 complexed to murine reference antibody 125-2H Fab

X-ray diffraction
1.49Å resolution
Source organisms:
Assembly composition:
hetero trimer (preferred)
Entry contents: 3 distinct polypeptide molecules

Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero trimer
Accessible surface area: 25746.08 Å2
Buried surface area: 5619.67 Å2
Dissociation area: 2,644.58 Å2
Dissociation energy (ΔGdiss): 15.18 kcal/mol
Dissociation entropy (TΔSdiss): 25.56 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-212017

Macromolecules

Chain: H
Length: 216 amino acids
Theoretical weight: 23.26 KDa
Source organism: Mus musculus
Expression system: Mus musculus
InterPro:
CATH: Immunoglobulins

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Chain: I
Length: 157 amino acids
Theoretical weight: 18.11 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: Q14116 (Residues: 37-193; Coverage: 81%)
Gene names: IGIF, IL18, IL1F4
Pfam: Interleukin-1 / 18
InterPro:
CATH: Trefoil (Acidic Fibroblast Growth Factor, subunit A)

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