1EPW

CRYSTAL STRUCTURE OF CLOSTRIDIUM NEUROTOXIN TYPE B

• PDB DOI: https://doi.org/10.2210/pdb1EPW/pdb

• Classification: HYDROLASE
• Organism(s): Clostridium botulinum
• Mutation(s): No 


• Deposited: 2000-03-29 Released: 2000-11-01 
• Deposition Author(s): Swaminathan, S., Eswaramoorthy, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.233 
• R-Value Work: 0.202 

Literature

Structural analysis of the catalytic and binding sites of Clostridium botulinum neurotoxin B.

Swaminathan, S., Eswaramoorthy, S.

(2000) Nat Struct Biol 7: 693-699

• PubMed: 10932256 
• DOI: https://doi.org/10.1038/78005
• Primary Citation of Related Structures:  
  1EPW, 1F31


• PubMed Abstract: 
  

  Clostridium botulinum neurotoxins are among the most potent toxins to humans. The crystal structures of intact C. botulinum neurotoxin type B (BoNT/B) and its complex with sialyllactose, determined at 1. 8 and 2.6 A resolution, respectively, provide insight into its catalytic and binding sites. The position of the belt region in BoNT/B is different from that in BoNT/A; this observation presents interesting possibilities for designing specific inhibitors that could be used to block the activity of this neurotoxin. The structures of BoNT/B and its complex with sialyllactose provide a detailed description of the active site and a model for interactions between the toxin and its cell surface receptor. The latter may provide valuable information for recombinant vaccine development.

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Organizational Affiliation: 

Biology Department, Brookhaven National Laboratory, Upton, New York 11973, USA. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 150.99 kDa 
• Atom Count: 11,456 
• Modelled Residue Count: 1,287 
• Deposited Residue Count: 1,290 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BOTULINUM NEUROTOXIN TYPE B	A	1,290	Clostridium botulinum	Mutation(s): 0  EC: 3.4.24.69
UniProt
Find proteins for P10844 (Clostridium botulinum) Explore P10844  Go to UniProtKB:  P10844

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.233 
• R-Value Work: 0.202 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 75.82	α = 90
b = 123.12	β = 113.8
c = 96.23	γ = 90

Software Package:

Software Name	Purpose
MARMAD	data collection
SCALEPACK	data scaling
SHARP	phasing
CNS	refinement
MARMAD	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-11-01 
Deposition Author(s): Swaminathan, S., Eswaramoorthy, S.

Revision History  

• Version 1.0: 2000-11-01
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance