1Z0H | pdb_00001z0h

N-terminal helix reorients in recombinant C-fragment of Clostridium botulinum type B

• PDB DOI: https://doi.org/10.2210/pdb1Z0H/pdb

• Classification: HYDROLASE
• Organism(s): Clostridium botulinum
• Expression System: Komagataella pastoris
• Mutation(s): No 


• Deposited: 2005-03-01 Released: 2005-03-15 
• Deposition Author(s): Jayaraman, S., Eswarmoorthy, S., Ashraf, S.A., Smith, L.A., Swaminathan, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 
  0.282 (Depositor) 
• R-Value Work: 
  0.234 (Depositor) 
• R-Value Observed: 
  0.234 (Depositor) 

Starting Model: experimental

Literature

N-terminal helix reorients in recombinant C-fragment of Clostridium botulinum type B.

Jayaraman, S., Eswaramoorthy, S., Ahmed, S.A., Smith, L.A., Swaminathan, S.

(2005) Biochem Biophys Res Commun 330: 97-103

• PubMed: 15781237 
• DOI: https://doi.org/10.1016/j.bbrc.2005.02.123
• Primary Citation Related Structures: 
  1Z0H


• PubMed Abstract: 
  

  Botulinum neurotoxins comprise seven distinct serotypes (A-G) produced by Clostridium botulinum. The crystal structure of the binding domain of the botulinum neurotoxin type B (BBHc) has been determined to 2A resolution. The overall structure of BBHc is well ordered and similar to that of the binding domain of the holotoxin. However, significant structural changes occur at what would be the interface of translocation and binding domains of the holotoxin. The loop 911-924 shows a maximum displacement of 14.8A at the farthest point. The N-terminal helix reorients and moves by 19.5A from its original position. BBHc is compared with the binding domain of the holotoxin of botulinum type A and B, and the tetanus C-fragment to characterize the heavy chain-carbohydrate interactions. The probable reasons for different binding affinity of botulinum and tetanus toxins are discussed.

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Organizational Affiliation: 
• Biology Department, Brookhaven National Laboratory, Upton, NY 11973, USA.

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: 105.46 kDa 
• Atom Count: 7,864 
• Modeled Residue Count: 876 
• Deposited Residue Count: 876 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Botulinum neurotoxin type B	A, B	438	Clostridium botulinum	Mutation(s): 0  Gene Names: botB EC: 3.4.24.69
UniProt
Find proteins for P10844 (Clostridium botulinum) Explore P10844  Go to UniProtKB:  P10844

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free:  0.282 (Depositor) 
• R-Value Work:  0.234 (Depositor) 
• R-Value Observed: 0.234 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.664	α = 90
b = 78.806	β = 103.03
c = 87.722	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
CBASS	data collection
HKL-2000	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-03-15 
Deposition Author(s): Jayaraman, S., Eswarmoorthy, S., Ashraf, S.A., Smith, L.A., Swaminathan, S.

Revision History  

• Version 1.0: 2005-03-15
  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: 2023-08-23
  Changes: Data collection, Database references, Refinement description