4BOR

The structure and super-organization of acetylcholine receptor-rapsyn complexes class D


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 42 Å
  • Aggregation State: TISSUE 
  • Reconstruction Method: TOMOGRAPHY 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and Superorganization of Acetylcholine Receptor-Rapsyn Complexes.

Zuber, B.Unwin, N.

(2013) Proc.Natl.Acad.Sci.USA 110: 10622

  • DOI: 10.1073/pnas.1301277110
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The scaffolding protein at the neuromuscular junction, rapsyn, enables clustering of nicotinic acetylcholine receptors in high concentration and is critical for muscle function. Patients with insufficient receptor clustering suffer from muscle weakne ...

    The scaffolding protein at the neuromuscular junction, rapsyn, enables clustering of nicotinic acetylcholine receptors in high concentration and is critical for muscle function. Patients with insufficient receptor clustering suffer from muscle weakness. However, the detailed organization of the receptor-rapsyn network is poorly understood: it is unclear whether rapsyn first forms a wide meshwork to which receptors can subsequently dock or whether it only forms short bridges linking receptors together to make a large cluster. Furthermore, the number of rapsyn-binding sites per receptor (a heteropentamer) has been controversial. Here, we show by cryoelectron tomography and subtomogram averaging of Torpedo postsynaptic membrane that receptors are connected by up to three rapsyn bridges, the minimum number required to form a 2D network. Half of the receptors belong to rapsyn-connected groups comprising between two and fourteen receptors. Our results provide a structural basis for explaining the stability and low diffusion of receptors within clusters.


    Organizational Affiliation

    Laboratory of Experimental Morphology, Institute of Anatomy, University of Bern, CH-3000 Bern 9, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ACETYLCHOLINE RECEPTOR SUBUNIT ALPHA
A, D
461Torpedo marmorataMutation(s): 0 
Gene Names: CHRNA1
Find proteins for P02711 (Torpedo marmorata)
Go to Gene View: CHRNA1
Go to UniProtKB:  P02711
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ACETYLCHOLINE RECEPTOR BETA SUBUNIT
B
493Torpedo marmorataMutation(s): 0 
Find proteins for Q6S3I0 (Torpedo marmorata)
Go to UniProtKB:  Q6S3I0
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
ACETYLCHOLINE RECEPTOR DELTA SUBUNIT
C
522Torpedo marmorataMutation(s): 0 
Find proteins for Q6S3H8 (Torpedo marmorata)
Go to UniProtKB:  Q6S3H8
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
ACETYLCHOLINE RECEPTOR GAMMA SUBUNIT
E
505Torpedo marmorataMutation(s): 0 
Find proteins for Q6S3H9 (Torpedo marmorata)
Go to UniProtKB:  Q6S3H9
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 42 Å
  • Aggregation State: TISSUE 
  • Reconstruction Method: TOMOGRAPHY 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-05-22 
  • Released Date: 2013-06-26 
  • Deposition Author(s): Zuber, B., Unwin, N.

Revision History 

  • Version 1.0: 2013-06-26
    Type: Initial release
  • Version 1.1: 2013-07-10
    Type: Database references
  • Version 1.2: 2017-08-02
    Type: Data collection