6Y5A

Serotonin-bound 5-HT3A receptor in Salipro


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Asymmetric opening of the homopentameric 5-HT 3A serotonin receptor in lipid bilayers.

Zhang, Y.Dijkman, P.M.Zou, R.Zandl-Lang, M.Sanchez, R.M.Eckhardt-Strelau, L.Kofeler, H.Vogel, H.Yuan, S.Kudryashev, M.

(2021) Nat Commun 12: 1074-1074

  • DOI: 10.1038/s41467-021-21016-7
  • Primary Citation of Related Structures:  
    6Y5B, 6Y5A, 6Y59

  • PubMed Abstract: 
  • Pentameric ligand-gated ion channels (pLGICs) of the Cys-loop receptor family are key players in fast signal transduction throughout the nervous system. They have been shown to be modulated by the lipid environment, however the underlying mechanism is not well understood ...

    Pentameric ligand-gated ion channels (pLGICs) of the Cys-loop receptor family are key players in fast signal transduction throughout the nervous system. They have been shown to be modulated by the lipid environment, however the underlying mechanism is not well understood. We report three structures of the Cys-loop 5-HT 3A serotonin receptor (5HT 3 R) reconstituted into saposin-based lipid bilayer discs: a symmetric and an asymmetric apo state, and an asymmetric agonist-bound state. In comparison to previously published 5HT 3 R conformations in detergent, the lipid bilayer stabilises the receptor in a more tightly packed, 'coupled' state, involving a cluster of highly conserved residues. In consequence, the agonist-bound receptor conformation adopts a wide-open pore capable of conducting sodium ions in unbiased molecular dynamics (MD) simulations. Taken together, we provide a structural basis for the modulation of 5HT 3 R by the membrane environment, and a model for asymmetric activation of the receptor.


    Organizational Affiliation

    Buchmann Institute for Molecular Life Sciences (BMLS), Goethe University of Frankfurt, Frankfurt am Main, Germany. misha.kudryashev@biophys.mpg.de.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
5-hydroxytryptamine receptor 3AA, D [auth B], B [auth C], C [auth D], E538Mus musculusMutation(s): 0 
Gene Names: Htr3a5ht3Htr3
Membrane Entity: Yes 
UniProt
Find proteins for P23979 (Mus musculus)
Explore P23979 
Go to UniProtKB:  P23979
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Alexander von Humboldt FoundationGermanySofja Kovalevskaja Award to Mikhail Kudryashev

Revision History  (Full details and data files)

  • Version 1.0: 2020-12-23
    Type: Initial release
  • Version 1.1: 2021-03-03
    Changes: Database references