1VZJ

Structure of the tetramerization domain of acetylcholinesterase: four-fold interaction of a WWW motif with a left-handed polyproline helix


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.247 
  • R-Value Observed: 0.247 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

The Synaptic Acetylcholinesterase Tetramer Assembles Around a Polyproline-II Helix

Dvir, H.Harel, M.Bon, S.Liu, W.-Q.Vidal, M.Garbay, C.Sussman, J.L.Massoulie, J.Silman, I.

(2004) EMBO J 23: 4394

  • DOI: https://doi.org/10.1038/sj.emboj.7600425
  • Primary Citation of Related Structures:  
    1VZJ

  • PubMed Abstract: 

    Functional localization of acetylcholinesterase (AChE) in vertebrate muscle and brain depends on interaction of the tryptophan amphiphilic tetramerization (WAT) sequence, at the C-terminus of its major splice variant (T), with a proline-rich attachment domain (PRAD), of the anchoring proteins, collagenous (ColQ) and proline-rich membrane anchor. The crystal structure of the WAT/PRAD complex reveals a novel supercoil structure in which four parallel WAT chains form a left-handed superhelix around an antiparallel left-handed PRAD helix resembling polyproline II. The WAT coiled coils possess a WWW motif making repetitive hydrophobic stacking and hydrogen-bond interactions with the PRAD. The WAT chains are related by an approximately 4-fold screw axis around the PRAD. Each WAT makes similar but unique interactions, consistent with an asymmetric pattern of disulfide linkages between the AChE tetramer subunits and ColQ. The P59Q mutation in ColQ, which causes congenital endplate AChE deficiency, and is located within the PRAD, disrupts crucial WAT-WAT and WAT-PRAD interactions. A model is proposed for the synaptic AChE(T) tetramer.


  • Organizational Affiliation

    Dapartment of Structural Biology, Weizmann Institute of Science, Rehovot, Israel.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ACETYLCHOLINESTERASE
A, B, C, D, E
A, B, C, D, E, F, G, H
40Homo sapiensMutation(s): 0 
EC: 3.1.1.7
UniProt & NIH Common Fund Data Resources
Find proteins for P22303 (Homo sapiens)
Explore P22303 
Go to UniProtKB:  P22303
PHAROS:  P22303
GTEx:  ENSG00000087085 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP22303
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
ACETYLCHOLINESTERASE COLLAGENIC TAIL PEPTIDE
I, J
15Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y215 (Homo sapiens)
Explore Q9Y215 
Go to UniProtKB:  Q9Y215
PHAROS:  Q9Y215
GTEx:  ENSG00000206561 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Y215
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E
A, B, C, D, E, F, G, H
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.247 
  • R-Value Observed: 0.247 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.73α = 90
b = 58.79β = 111.38
c = 58.8γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
SOLVE/RESOLVEphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-01-10
    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: 2019-10-16
    Changes: Data collection, Derived calculations, Other
  • Version 1.4: 2024-11-20
    Changes: Data collection, Database references, Structure summary