1FF4

X-RAY STRUCTURE OF MUSCARINIC TOXIN 2 AT 1.5 ANGSTROM RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb1FF4/pdb

• Classification: TOXIN
• Organism(s): Dendroaspis angusticeps
• Mutation(s): No 


• Deposited: 2000-07-25 Released: 2003-07-08 
• Deposition Author(s): Menez, R., Le Du, M.H., Gaucher, J.F., Menez, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.244 
• R-Value Work: 0.205 
• R-Value Observed: 0.210 

Literature

X-ray structure of muscarinic toxin 2 at 1.5 Angstrom resolution

Menez, R., Le Du, M.H., Gaucher, J.F., Menez, A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 7.19 kDa 
• Atom Count: 585 
• Modelled Residue Count: 65 
• Deposited Residue Count: 65 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MUSCARINIC TOXIN/ACETYLCHOLINE RECEPTOR BINDING PROTEIN	A	65	Dendroaspis angusticeps	Mutation(s): 0
UniProt
Find proteins for P18328 (Dendroaspis angusticeps) Explore P18328  Go to UniProtKB:  P18328

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.244 
• R-Value Work: 0.205 
• R-Value Observed: 0.210 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 63	α = 90
b = 63	β = 90
c = 37	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
X-PLOR	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-07-08 
Deposition Author(s): Menez, R., Le Du, M.H., Gaucher, J.F., Menez, A.

Revision History  

• Version 1.0: 2003-07-08
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2018-01-31
  Changes: Experimental preparation
• Version 1.4: 2018-04-04
  Changes: Data collection
• Version 1.5: 2024-10-16
  Changes: Data collection, Database references, Derived calculations, Structure summary