2W6C

ACHE IN COMPLEX WITH A BIS-(-)-NOR-MEPTAZINOL DERIVATIVE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.69 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.188 

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This is version 2.0 of the entry. See complete history


Literature

The Crystal Structure of a Complex of Acetylcholinesterase with a Bis-(-)-Nor-Meptazinol Derivative Reveals Disruption of the Catalytic Triad.

Paz, A.Xie, Q.Greenblatt, H.M.Fu, W.Tang, Y.Silman, I.Qiu, Z.Sussman, J.L.

(2009) J Med Chem 52: 2543

  • DOI: 10.1021/jm801657v
  • Primary Citation of Related Structures:  
    2W6C

  • PubMed Abstract: 
  • A bis-(-)-nor-meptazinol derivative in which the two meptazinol rings are linked by a nonamethylene spacer is a novel acetylcholinesterase inhibitor that inhibits both catalytic activity and Abeta peptide aggregation. The crystal structure of its complex with Torpedo californica acetylcholinesterase was determined to 2 ...

    A bis-(-)-nor-meptazinol derivative in which the two meptazinol rings are linked by a nonamethylene spacer is a novel acetylcholinesterase inhibitor that inhibits both catalytic activity and Abeta peptide aggregation. The crystal structure of its complex with Torpedo californica acetylcholinesterase was determined to 2.7 A resolution. The ligand spans the active-site gorge, with one nor-meptazinol moiety bound at the "anionic" subsite of the active site, disrupting the catalytic triad by forming a hydrogen bond with His440N(epsilon2), which is hydrogen-bonded to Ser200O(gamma) in the native enzyme. The second nor-meptazinol binds at the peripheral "anionic" site at the gorge entrance. A number of GOLD models of the complex, using both native TcAChE and the protein template from the crystal structure of the bis-(-)-nor-meptazinol/TcAChE complex, bear higher similarity to the X-ray structure than a previous model obtained using the mouse enzyme structure. These findings may facilitate rational design of new meptazinol-based acetylcholinesterase inhibitors.


    Organizational Affiliation

    Department of Structural Biology and Neurobiology, Weizmann Institute of Science, Rehovot 76100, Israel.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ACETYLCHOLINESTERASEA [auth X]586Tetronarce californicaMutation(s): 0 
Gene Names: ache
EC: 3.1.1.7
UniProt
Find proteins for P04058 (Tetronarce californica)
Explore P04058 
Go to UniProtKB:  P04058
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseB [auth A]2N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BM4 (Subject of Investigation/LOI)
Query on BM4

Download Ideal Coordinates CCD File 
C [auth X]3-[(3R)-3-ethyl-1-{9-[(3S)-3-ethyl-3-(3-hydroxyphenyl)azepan-1-yl]nonyl}azepan-3-yl]phenol
C37 H58 N2 O2
ZZKZUUMHRSWLQQ-JXLNJXQWSA-N
 Ligand Interaction
NAG (Subject of Investigation/LOI)
Query on NAG

Download Ideal Coordinates CCD File 
D [auth X], E [auth X]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
BM4 PDBBind:  2W6C IC50: 3.9 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.69 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.188 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.172α = 90
b = 112.172β = 90
c = 137.568γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
REFMACphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-04-07
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-07-12
    Changes: Advisory
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary