1QTI

Acetylcholinesterase (E.C.3.1.1.7)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Three-dimensional structure of a complex of galanthamine (Nivalin) with acetylcholinesterase from Torpedo californica: implications for the design of new anti-Alzheimer drugs

Bartolucci, C.Perola, E.Pilger, C.Fels, G.Lamba, D.

(2001) Proteins 42: 182-191

  • Also Cited By: 3I6Z, 3I6M

  • PubMed Abstract: 
  • The 3D structure of a complex of the anti-Alzheimer drug galanthamine with Torpedo californica acetylcholinesterase is reported. Galanthamine, a tertiary alkaloid extracted from several species of Amarylidacae, is so far the only drug that shows a du ...

    The 3D structure of a complex of the anti-Alzheimer drug galanthamine with Torpedo californica acetylcholinesterase is reported. Galanthamine, a tertiary alkaloid extracted from several species of Amarylidacae, is so far the only drug that shows a dual activity, being both an acetylcholinesterase inhibitor and an allosteric potentiator of the nicotinic response induced by acetylcholine and competitive agonists. The X-ray structure, at 2.5A resolution, shows an unexpected orientation of the ligand within the active site, as well as unusual protein-ligand interactions. The inhibitor binds at the base of the active site gorge, interacting with both the acyl-binding pocket and the principal quaternary ammonium-binding site. However, the tertiary amine group of galanthamine does not directly interact with Trp84. A docking study using the program AUTODOCK correctly predicts the orientation of galanthamine in the active site. The docked lowest-energy structure has a root mean square deviation of 0.5A with respect to the corresponding crystal structure of the complex. The observed binding mode explains the affinities of a series of structural analogs of galanthamine and provides a rational basis for structure-based drug design of synthetic derivatives with improved pharmacological properties. Proteins 2001;42:182-191.


    Related Citations: 
    • Atomic Structure of Acetylcholinesterase from Torpedo californica: A Prototypic Acetylcholine-Binding Protein
      Sussman, J.L.,Harel, M.,Frolow, F.,Oefner, C.,Goldman, A.,Toker, L.,Silman, I.
      (1991) Science 253: 872
    • New Kilogram-Synthesis of the Anti-Alzheimer Drug (-)-Galanthamine
      Czollner, L.,Frantsits, W.,Kuenburg, B.,Hedenig, U.,Frohlich, J.,Jordis, U.
      (1998) Tetrahedron Lett. 39: 2087
    • Potent Acetylcholinesterase Inhibitors-Design, Synthesis, and Structure- Activity Relationships of Bis-Interacting Ligands in the Galanthamine Series
      Mary, A.,Renko, D.Z.,Guillou, C.,Thal, C.
      (1998) Bioorg.Med.Chem. 6: 1835
    • Prediction of the Binding Site of (-)-Galanthamine in Acetylcholinesterase by Docking Studies
      Pilger, C.,Bartolucci, C.,Lamba, D.,Tropsha, A.,Fels, G.
      () TO BE PUBLISHED --: --


    Organizational Affiliation

    Istituto di Strutturistica Chimica G. Giacomello, Monterotondo Stazione, Roma, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ACETYLCHOLINESTERASE
A
537Tetronarce californicaMutation(s): 0 
Gene Names: ache
EC: 3.1.1.7
Find proteins for P04058 (Tetronarce californica)
Go to UniProtKB:  P04058
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GNT
Query on GNT

Download SDF File 
Download CCD File 
A
(-)-GALANTHAMINE
C17 H21 N O3
ASUTZQLVASHGKV-JDFRZJQESA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
GNTIC50: 6.5 - 1069 nM (100) BINDINGDB
GNTKi: 190 nM (100) BINDINGDB
GNTIC50: 360 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.192 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 110.824α = 90.00
b = 110.824β = 90.00
c = 136.445γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
X-PLORphasing
X-PLORrefinement
X-PLORmodel building
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-12-29
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance