1s5d

X-ray diffraction
1.75Å resolution

Cholera holotoxin with an A-subunit Y30S mutation, Crystal form 2

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero hexamer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-134378 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Cholera enterotoxin subunit A Chain: A
Molecule details ›
Chain: A
Length: 240 amino acids
Theoretical weight: 27.15 KDa
Source organism: Vibrio cholerae
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P01555 (Residues: 19-258; Coverage: 100%)
Gene names: VC_1457, ctxA, toxA
Sequence domains: Heat-labile enterotoxin alpha chain
Structure domains: Heat-Labile Enterotoxin, subunit A
Cholera enterotoxin subunit B Chains: D, E, F, G, H
Molecule details ›
Chains: D, E, F, G, H
Length: 103 amino acids
Theoretical weight: 11.62 KDa
Source organism: Vibrio cholerae
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P01556 (Residues: 22-124; Coverage: 100%)
Gene names: VC_1456, ctxB, toxB
Sequence domains: Heat-labile enterotoxin beta chain
Structure domains: OB fold (Dihydrolipoamide Acetyltransferase, E2P)

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-ID
Spacegroup: P212121
Unit cell:
a: 60.055Å b: 111.904Å c: 124.656Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.163 0.161 0.191
Expression system: Escherichia coli BL21(DE3)