2ETF

Crystal structure of full length botulinum neurotoxin (Type B) light chain

• PDB DOI: https://doi.org/10.2210/pdb2ETF/pdb

• Classification: HYDROLASE
• Organism(s): Clostridium botulinum
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2005-10-27 Released: 2005-12-06 
• Deposition Author(s): Swaminathan, S., Eswaramoorthy, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.29 Å
• R-Value Free: 0.264 
• R-Value Work: 0.224 

Starting Model: experimental

Literature

Crystal structure of full length botulinum neurotoxin (Type B) light chain

Eswaramoorthy, S., Swaminathan, S.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 102.65 kDa 
• Atom Count: 7,388 
• Modelled Residue Count: 869 
• Deposited Residue Count: 882 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Botulinum neurotoxin B light chain	A, B	441	Clostridium botulinum	Mutation(s): 1  Gene Names: botB 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	D [auth A], F [auth B], G [auth B], H [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
ZN	C [auth A], E [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CSD	A, B	L-PEPTIDE LINKING	C3 H7 N O4 S		CYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.29 Å
• R-Value Free: 0.264 
• R-Value Work: 0.224 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 139.33	α = 90
b = 101.94	β = 129.61
c = 104.32	γ = 90

Software Package:

Software Name	Purpose
CBASS	data collection
SCALEPACK	data scaling
AMoRE	phasing
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-12-06 
Deposition Author(s): Swaminathan, S., Eswaramoorthy, S.

Revision History  

• Version 1.0: 2005-12-06
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2014-11-19
  Changes: Non-polymer description
• Version 1.4: 2023-08-23
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.5: 2024-10-09
  Changes: Structure summary