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 

wwPDB Validation 3D Report Full Report


This is version 1.2 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: 10.1038/sj.emboj.7600425

  • 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 attachme ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ACETYLCHOLINESTERASE
A, B, C, D, E, F, G, H
40Homo sapiensMutation(s): 0 
Gene Names: ACHE
EC: 3.1.1.7
Find proteins for P22303 (Homo sapiens)
Go to Gene View: ACHE
Go to UniProtKB:  P22303
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ACETYLCHOLINESTERASE COLLAGENIC TAIL PEPTIDE
I, J
15Homo sapiensMutation(s): 0 
Gene Names: COLQ
Find proteins for Q9Y215 (Homo sapiens)
Go to Gene View: COLQ
Go to UniProtKB:  Q9Y215
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
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 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 53.730α = 90.00
b = 58.790β = 111.38
c = 58.800γ = 90.00
Software Package:
Software NamePurpose
SOLVE/RESOLVEphasing
SCALEPACKdata scaling
DENZOdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-01-10
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance