3ojy

X-ray diffraction
2.51Å resolution

Crystal Structure of Human Complement Component C8

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-139558 (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Complement component C8 alpha chain Chain: A
Molecule details ›
Chain: A
Length: 554 amino acids
Theoretical weight: 61.78 KDa
Source organism: Homo sapiens
UniProt:
  • Canonical: P07357 (Residues: 31-584; Coverage: 98%)
Gene name: C8A
Sequence domains:
Complement component C8 beta chain Chain: B
Molecule details ›
Chain: B
Length: 537 amino acids
Theoretical weight: 61.2 KDa
Source organism: Homo sapiens
UniProt:
  • Canonical: P07358 (Residues: 55-591; Coverage: 96%)
Gene name: C8B
Sequence domains:
Complement component C8 gamma chain Chain: C
Molecule details ›
Chain: C
Length: 182 amino acids
Theoretical weight: 20.41 KDa
Source organism: Homo sapiens
UniProt:
  • Canonical: P07360 (Residues: 21-202; Coverage: 100%)
Gene name: C8G
Sequence domains: Lipocalin / cytosolic fatty-acid binding protein family
Structure domains: Lipocalin

Ligands and Environments

2 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 22-BM
Spacegroup: P63
Unit cell:
a: 139.575Å b: 139.575Å c: 127.16Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.253 0.249 0.337