2ish

X-ray diffraction
2Å resolution

Function and Biology Details

Reaction catalysed:
Limited hydrolysis of proteins of the neuroexocytosis apparatus, synaptobrevin (also known as neuronal vesicle-associated membrane protein, VAMP), synaptosome-associated protein of 25 kDa (SNAP25) or syntaxin. No detected action on small molecule substrates.
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-181354 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Neurotoxin type A Chains: A, B
Molecule details ›
Chains: A, B
Length: 421 amino acids
Theoretical weight: 48.16 KDa
Source organism: Clostridium botulinum
Expression system: Escherichia coli
UniProt:
  • Canonical: Q7B8V4 (Residues: 2-420; Coverage: 32%)
Gene names: A, a, boNT, bont, bonta
Sequence domains: Clostridial neurotoxin zinc protease
Structure domains: Metalloproteases ("zincins"), catalytic domain like

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 8.2.1
Spacegroup: P21
Unit cell:
a: 39.022Å b: 197.377Å c: 58.314Å
α: 90° β: 90.02° γ: 90°
R-values:
R R work R free
0.233 0.233 0.267
Expression system: Escherichia coli