3ci0

X-ray diffraction
2.2Å resolution

The Crystal Structure of the GspK-GspI-GspJ complex from enterotoxigenic Escherichia coli Type 2 Secretion System

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-105133 (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Type II secretion system protein I Chain: I
Molecule details ›
Chain: I
Length: 89 amino acids
Theoretical weight: 10.1 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q8VPC3 (Residues: 33-118; Coverage: 70%)
Gene name: gspI
Sequence domains: Type II secretion system (T2SS), protein I
Structure domains: GSPII I/J protein-like
Type II secretion system protein J Chain: J
Molecule details ›
Chain: J
Length: 163 amino acids
Theoretical weight: 18.69 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: A0A4C3GMC1 (Residues: 38-199; Coverage: 81%)
Gene names: BvCms2454_02423, gspJ
Sequence domains: Type II secretion system (T2SS), protein J
Structure domains:
Type II secretion system protein K Chain: K
Molecule details ›
Chain: K
Length: 298 amino acids
Theoretical weight: 33.7 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q8VLK7 (Residues: 31-325; Coverage: 91%)
Gene name: gspK
Sequence domains:
Structure domains:

Ligands and Environments

2 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL9-2
Spacegroup: P41212
Unit cell:
a: 96.118Å b: 96.118Å c: 108.436Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.195 0.192 0.259
Expression system: Escherichia coli BL21(DE3)