3RSJ

Structure of HCRF in complex with Ganglioside GD1a

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.232 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history. 


Literature

Unique ganglioside recognition strategies for clostridial neurotoxins.

Benson, M.A., Fu, Z., Kim, J.J., Baldwin, M.R.

(2011) J Biol Chem 286: 34015-34022

  • DOI: 10.1074/jbc.M111.272054
  • Primary Citation of Related Structures:  
    3RSJ

  • PubMed Abstract: 

    • Botulinum neurotoxins (BoNTs) and tetanus neurotoxin are the causative agents of the paralytic diseases botulism and tetanus, respectively. The potency of the clostridial neurotoxins (CNTs) relies primarily on their highly specific binding to nerve terminals and cleavage of SNARE proteins ...

    Botulinum neurotoxins (BoNTs) and tetanus neurotoxin are the causative agents of the paralytic diseases botulism and tetanus, respectively. The potency of the clostridial neurotoxins (CNTs) relies primarily on their highly specific binding to nerve terminals and cleavage of SNARE proteins. Although individual CNTs utilize distinct proteins for entry, they share common ganglioside co-receptors. Here, we report the crystal structure of the BoNT/F receptor-binding domain in complex with the sugar moiety of ganglioside GD1a. GD1a binds in a shallow groove formed by the conserved peptide motif E … H … SXWY … G, with additional stabilizing interactions provided by two arginine residues. Comparative analysis of BoNT/F with other CNTs revealed several differences in the interactions of each toxin with ganglioside. Notably, exchange of BoNT/F His-1241 with the corresponding lysine residue of BoNT/E resulted in increased affinity for GD1a and conferred the ability to bind ganglioside GM1a. Conversely, BoNT/E was not able to bind GM1a, demonstrating a discrete mechanism of ganglioside recognition. These findings provide a structural basis for ganglioside binding among the CNTs and show that individual toxins utilize unique ganglioside recognition strategies.

    Organizational Affiliation: 

    Department of Molecular Microbiology and Immunology, University of Missouri, Columbia, Missouri 65212, USA.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BoNT/FA, B, C, D413Clostridium botulinumMutation(s): 0 
Gene Names: boNT/F, Botulinum Neurotoxin
EC: 3.4.24.69
Find proteins for A7GBG3 (Clostridium botulinum (strain Langeland / NCTC 10281 / Type F))
Explore A7GBG3 
Go to UniProtKB:  A7GBG3
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranoseE, H3 N/A Oligosaccharides Interaction
Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-[N-acetyl-alpha-neuraminic acid-(2-3)]beta-D-galactopyranoseF5 N/A Oligosaccharides Interaction
Entity ID: 4
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-galactopyranose-(1-4)-beta-D-galactopyranoseG4 N/A Oligosaccharides Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.232 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.468α = 72.55
b = 84.266β = 87.01
c = 117.6γ = 67.13
Software Package:
Software NamePurpose
ADSCdata collection
MOLREPphasing
CNSrefinement
HKL-3000data reduction
HKL-3000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-08-17
    Type: Initial release
  • Version 1.1: 2011-08-31
    Changes: Database references
  • Version 1.2: 2011-10-12
    Changes: Database references
  • Version 1.3: 2018-01-24
    Changes: Structure summary
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary