6ov2

X-ray diffraction
3.2Å resolution

Crystal structure of human claudin-9 in complex with Clostridium perfringens entertoxin C-terminal domain in closed form

Released:
Primary publication:
Claudin-9 structures reveal mechanism for toxin-induced gut barrier breakdown.
Proc Natl Acad Sci U S A 116 17817-17824 (2019)
PMID: 31434788

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-131941 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Claudin-9 Chain: A
Molecule details ›
Chain: A
Length: 217 amino acids
Theoretical weight: 22.86 KDa
Source organism: Homo sapiens
Expression system: Trichoplusia ni
UniProt:
  • Canonical: O95484 (Residues: 1-217; Coverage: 100%)
Gene name: CLDN9
Sequence domains: PMP-22/EMP/MP20/Claudin family
Heat-labile enterotoxin B chain Chain: B
Molecule details ›
Chain: B
Length: 131 amino acids
Theoretical weight: 14.8 KDa
Source organism: Clostridium perfringens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: P01558 (Residues: 194-319; Coverage: 40%)
Gene name: cpe

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 8.3.1
Spacegroup: P212121
Unit cell:
a: 70.94Å b: 111.57Å c: 121.71Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.282 0.281 0.291
Expression systems:
  • Trichoplusia ni
  • Spodoptera frugiperda