3MPP | pdb_00003mpp

Botulinum Neurotoxin Type G Receptor Binding Domain

• PDB DOI: https://doi.org/10.2210/pdb3MPP/pdb

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


• Deposited: 2010-04-27 Released: 2010-06-16 
• Deposition Author(s): Schmitt, J.M., Lacy, D.B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.98 Å
• R-Value Free: 
  0.221 (Depositor), 0.216 (DCC) 
• R-Value Work: 
  0.175 (Depositor), 0.172 (DCC) 
• R-Value Observed: 
  0.177 (Depositor) 

Starting Model: experimental

Literature

Structural analysis of botulinum neurotoxin type G receptor binding .

Schmitt, J., Karalewitz, A., Benefield, D.A., Mushrush, D.J., Pruitt, R.N., Spiller, B.W., Barbieri, J.T., Lacy, D.B.

(2010) Biochemistry 49: 5200-5205

• PubMed: 20507178 
• DOI: https://doi.org/10.1021/bi100412v
• Primary Citation Related Structures: 
  3MPP


• PubMed Abstract: 
  

  Botulinum neurotoxin (BoNT) binds peripheral neurons at the neuromuscular junction through a dual-receptor mechanism that includes interactions with ganglioside and protein receptors. The receptor identities vary depending on BoNT serotype (A-G). BoNT/B and BoNT/G bind the luminal domains of synaptotagmin I and II, homologous synaptic vesicle proteins. We observe conditions under which BoNT/B binds both Syt isoforms, but BoNT/G binds only SytI. Both serotypes bind ganglioside G(T1b). The BoNT/G receptor-binding domain crystal structure provides a context for examining these binding interactions and a platform for understanding the physiological relevance of different Syt receptor isoforms in vivo.

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Organizational Affiliation: 
• Department of Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 50.68 kDa 
• Atom Count: 3,712 
• Modeled Residue Count: 403 
• Deposited Residue Count: 433 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Botulinum neurotoxin type G	A [auth G]	433	Clostridium botulinum	Mutation(s): 4  Gene Names: botG EC: 3.4.24.69
UniProt
Find proteins for Q60393 (Clostridium botulinum) Explore Q60393  Go to UniProtKB:  Q60393

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.98 Å
• R-Value Free:  0.221 (Depositor), 0.216 (DCC) 
• R-Value Work:  0.175 (Depositor), 0.172 (DCC) 
• R-Value Observed: 0.177 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.63	α = 90
b = 90.161	β = 90
c = 91.894	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
MOLREP	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-06-16 
Deposition Author(s): Schmitt, J.M., Lacy, D.B.

Revision History  

• Version 1.0: 2010-06-16
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2021-10-06
  Changes: Database references
• Version 1.3: 2023-09-06
  Changes: Data collection, Refinement description