Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 121368.00 
• Atom Count: 8470 
• Residue Count: 1086 
• Unique protein chains: 1

1N5R

Crystal structure of the mouse acetylcholinesterase-propidium complex

• DOI: 10.2210/pdb1N5R/pdb

• Classification: HYDROLASE
• Organism(s): Mus musculus
• Expression System: Homo sapiens


• Deposited: 2002-11-07 Released: 2003-02-04 
• Deposition Author(s): Bourne, Y., Taylor, P., Radic, Z., Marchot, P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.25 Å
• R-Value Free: 0.227 
• R-Value Work: 0.204 

Literature

Structural insights into ligand interactions at the acetylcholinesterase peripheral anionic site

Bourne, Y., Taylor, P., Radic, Z., Marchot, P.

(2003) EMBO J. 22: 1-12

• PubMed: 12505979 
• DOI: 10.1093/emboj/cdg005
• Primary Citation of Related Structures:  
  1J07, 1N5M, 1KU6, 1J06


• PubMed Abstract: 
  

The peripheral anionic site on acetylcholinesterase (AChE), located at the active center gorge entry, encompasses overlapping binding sites for allosteric activators and inhibitors; yet, the molecular mechanisms coupling this site to the active center at the gorge base to modulate catalysis remain unclear. The peripheral site has also been proposed to be involved in heterologous protein associations occurring during synaptogenesis or upon neurodegeneration. A novel crystal form of mouse AChE, combined with spectrophotometric analyses of the crystals, enabled us to solve unique structures of AChE with a free peripheral site, and as three complexes with peripheral site inhibitors: the phenylphenanthridinium ligands, decidium and propidium, and the pyrogallol ligand, gallamine, at 2.20-2.35 A resolution. Comparison with structures of AChE complexes with the peptide fasciculin or with organic bifunctional inhibitors unveils new structural determinants contributing to ligand interactions at the peripheral site, and permits a detailed topographic delineation of this site. Hence, these structures provide templates for designing compounds directed to the enzyme surface that modulate specific surface interactions controlling catalytic activity and non-catalytic heterologous protein associations.

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Organizational Affiliation: 

Architecture et Fonction des Macromolécules Biologiques, CNRS UMR 6098, Marseille, France. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
acetylcholinesterase	A, B	543	Mus musculus	Mutation(s): 0  Gene Names: Ache EC: 3.1.1.7
Find proteins for P21836 (Mus musculus) Go to UniProtKB:  P21836

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
FUC	A	ALPHA-L-FUCOSE C6 H12 O5 SHZGCJCMOBCMKK-SXUWKVJYSA-N
PG4	B	TETRAETHYLENE GLYCOL C8 H18 O5 UWHCKJMYHZGTIT-UHFFFAOYSA-N
P6G	A	HEXAETHYLENE GLYCOL POLYETHYLENE GLYCOL PEG400 C12 H26 O7 IIRDTKBZINWQAW-UHFFFAOYSA-N
PRM	A	3,8-DIAMINO-5[3-(DIETHYLMETHYLAMMONIO)PROPYL]-6-PHENYLPHENANTHRIDINIUM PROPIDIUM C27 H34 N4 ZDWVWKDAWBGPDN-UHFFFAOYSA-O
NAG	A, B	N-ACETYL-D-GLUCOSAMINE C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
ACY	A, B	ACETIC ACID C2 H4 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
PRM	Ki: 2200 nM BINDINGMOAD
PRM	Ki: 2200 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.25 Å
• R-Value Free: 0.227 
• R-Value Work: 0.204 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 79.552	α = 90.00
b = 111.665	β = 90.00
c = 226.834	γ = 90.00

Software Package:

Software Name	Purpose
CNS	phasing
DENZO	data reduction
SCALA	data scaling
CNS	refinement
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-11-07 
• Released Date: 2003-02-04 
• Deposition Author(s): Bourne, Y., Taylor, P., Radic, Z., Marchot, P.

Revision History 

• Version 1.0: 2003-02-04
  Type: Initial release
• Version 1.1: 2008-04-28
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Non-polymer description, Version format compliance
• Version 1.3: 2014-04-16
  Type: Other