1s5b

X-ray diffraction
2.13Å resolution

Cholera holotoxin with an A-subunit Y30S mutation Form 3

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

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 5.0.2
Spacegroup: P21
Unit cell:
a: 60.104Å b: 107.431Å c: 65.95Å
α: 90° β: 91.29° γ: 90°
R-values:
R R work R free
0.18 0.178 0.224
Expression system: Escherichia coli BL21(DE3)