5Z10

Structure of the mechanosensitive Piezo1 channel


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.97 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and mechanogating mechanism of the Piezo1 channel.

Zhao, Q.Zhou, H.Chi, S.Wang, Y.Wang, J.Geng, J.Wu, K.Liu, W.Zhang, T.Dong, M.Q.Wang, J.Li, X.Xiao, B.

(2018) Nature 554: 487-492

  • DOI: 10.1038/nature25743

  • PubMed Abstract: 
  • The mechanosensitive Piezo channels function as key eukaryotic mechanotransducers. However, their structures and mechanogating mechanisms remain unknown. Here we determine the three-bladed, propeller-like electron cryo-microscopy structure of mouse P ...

    The mechanosensitive Piezo channels function as key eukaryotic mechanotransducers. However, their structures and mechanogating mechanisms remain unknown. Here we determine the three-bladed, propeller-like electron cryo-microscopy structure of mouse Piezo1 and functionally reveal its mechanotransduction components. Despite the lack of sequence repetition, we identify nine repetitive units consisting of four transmembrane helices each-which we term transmembrane helical units (THUs)-which assemble into a highly curved blade-like structure. The last transmembrane helix encloses a hydrophobic pore, followed by three intracellular fenestration sites and side portals that contain pore-property-determining residues. The central region forms a 90 Å-long intracellular beam-like structure, which undergoes a lever-like motion to connect THUs to the pore via the interfaces of the C-terminal domain, the anchor-resembling domain and the outer helix. Deleting extracellular loops in the distal THUs or mutating single residues in the beam impairs the mechanical activation of Piezo1. Overall, Piezo1 possesses a unique 38-transmembrane-helix topology and designated mechanotransduction components, which enable a lever-like mechanogating mechanism.


    Organizational Affiliation

    School of Pharmaceutical Sciences or Life Sciences, Tsinghua University, Beijing 100084, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Piezo-type mechanosensitive ion channel component 1
A, B, C
2547Mus musculusMutation(s): 0 
Gene Names: Piezo1 (Fam38a)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Mechanosensitive
Protein: 
Piezo1 mechanosensitive channel by cryo-EM
Find proteins for E2JF22 (Mus musculus)
Go to UniProtKB:  E2JF22
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.97 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31630090
National Key R&D Program of ChinaChina2016YFA0500402

Revision History 

  • Version 1.0: 2018-01-31
    Type: Initial release
  • Version 1.1: 2018-02-07
    Type: Database references, Structure summary
  • Version 1.2: 2018-03-07
    Type: Database references