2ACK

ACETYLCHOLINESTERASE COMPLEXED WITH EDROPHONIUM, MONOCHROMATIC DATA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.257 
  • R-Value Observed: 0.213 

Starting Model: experimental
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This is version 1.5 of the entry. See complete history


Literature

Static Laue diffraction studies on acetylcholinesterase.

Ravelli, R.B.Raves, M.L.Ren, Z.Bourgeois, D.Roth, M.Kroon, J.Silman, I.Sussman, J.L.

(1998) Acta Crystallogr D Biol Crystallogr 54: 1359-1366

  • DOI: https://doi.org/10.1107/s0907444998005277
  • Primary Citation of Related Structures:  
    1AX9, 2ACK

  • PubMed Abstract: 

    Acetylcholinesterase (AChE) is one of nature's fastest enzymes, despite the fact that its three-dimensional structure reveals its active site to be deeply sequestered within the molecule. This raises questions with respect to traffic of substrate to, and products from, the active site, which may be investigated by time-resolved crystallography. In order to address one aspect of the feasibility of performing time-resolved studies on AChE, a data set has been collected using the Laue technique on a trigonal crystal of Torpedo californica AChE soaked with the reversible inhibitor edrophonium, using a total X-ray exposure time of 24 ms. Electron-density maps obtained from the Laue data, which are of surprisingly good quality compared with similar maps from monochromatic data, show essentially the same features. They clearly reveal the bound ligand, as well as a structural change in the conformation of the active-site Ser200 induced upon binding.


  • Organizational Affiliation

    Department of Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ACETYLCHOLINESTERASE537Tetronarce californicaMutation(s): 0 
EC: 3.1.1.7
UniProt
Find proteins for P04058 (Tetronarce californica)
Explore P04058 
Go to UniProtKB:  P04058
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04058
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
EDR
Query on EDR

Download Ideal Coordinates CCD File 
B [auth A]EDROPHONIUM ION
C10 H16 N O
VWLHWLSRQJQWRG-UHFFFAOYSA-O
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.257 
  • R-Value Observed: 0.213 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.409α = 90
b = 112.409β = 90
c = 136.55γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-02-11
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2016-06-29
    Changes: Derived calculations
  • Version 1.4: 2023-08-09
    Changes: Data collection, Database references, Derived calculations, Refinement description
  • Version 1.5: 2024-10-09
    Changes: Data collection, Structure summary