2FPQ

Crystal Structure of Botulinum Neurotoxin Type D Light Chain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of Botulinum Neurotoxin Type D Light Chain at 1.65 A Resolution: Repercussions for VAMP-2 Substrate Specificity(,).

Arndt, J.W.Chai, Q.Christian, T.Stevens, R.C.

(2006) Biochemistry 45: 3255-3262

  • DOI: 10.1021/bi052518r
  • Primary Citation of Related Structures:  
    2FPQ

  • PubMed Abstract: 
  • The seven serotypes (A-G) of botulinum neurotoxins (BoNTs) function through their proteolytic cleavage of one of three proteins (SNAP-25, Syntaxin, and VAMP) that form the SNARE complex required for synaptic vesicle fusion. The different BoNTs have v ...

    The seven serotypes (A-G) of botulinum neurotoxins (BoNTs) function through their proteolytic cleavage of one of three proteins (SNAP-25, Syntaxin, and VAMP) that form the SNARE complex required for synaptic vesicle fusion. The different BoNTs have very specific protease recognition requirements, between 15 and 50 amino acids in length depending on the serotype. However, the structural details involved in substrate recognition remain largely unknown. Here is reported the 1.65 A resolution crystal structure of the catalytic domain of BoNT serotype D (BoNT/D-LC), providing insight into the protein-protein binding interaction and final proteolysis of VAMP-2. Structural analysis has identified a hydrophobic pocket potentially involved in substrate recognition of the P1' VAMP residue (Leu 60) and a second remote site for recognition of the V1 SNARE motif that is critical for activity. A structural comparison of BoNT/D-LC with BoNT/F-LC that also recognizes VAMP-2 one residue away from the BoNT/D-LC site provides additional molecular details about the unique serotype specific activities. In particular, BoNT/D prefers a hydrophobic interaction for the V1 motif of VAMP-2, while BoNT/F adopts a more hydrophilic strategy for recognition of the same V1 motif.


    Organizational Affiliation

    Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BOTULINUM NEUROTOXIN D LIGHT CHAINA444Clostridium botulinumMutation(s): 0 
Gene Names: botD
EC: 3.4.24.69
Find proteins for P19321 (Clostridium botulinum D phage)
Explore P19321 
Go to UniProtKB:  P19321
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
K
Query on K

Download CCD File 
A
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.829α = 90
b = 89.818β = 94.29
c = 54.4γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
MOLREPphasing
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-03-21
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance