4nc2

X-ray diffraction
2.5Å resolution

Crystal structure of TcdB-B1 bound to B39 VHH

Released:

Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-210727 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Toxin B Chain: A
Molecule details ›
Chain: A
Length: 126 amino acids
Theoretical weight: 14.87 KDa
Source organism: Clostridioides difficile
Expression system: Escherichia coli
UniProt:
  • Canonical: P18177 (Residues: 2248-2366; Coverage: 5%)
Gene names: tcdB, toxB
Sequence domains: Putative cell wall binding repeat
Structure domains: Cholin Binding
B39 VHH Chain: B
Molecule details ›
Chain: B
Length: 141 amino acids
Theoretical weight: 15.63 KDa
Source organism: Lama glama
Expression system: Escherichia coli
Structure domains: Immunoglobulins

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL12-2
Spacegroup: P3221
Unit cell:
a: 101.3Å b: 101.3Å c: 59.47Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.194 0.192 0.229
Expression system: Escherichia coli