Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 485920.59 
• Atom Count: 21453 
• Residue Count: 4269 
• Unique protein chains: 1

6BPZ

Structure of the mechanically activated ion channel Piezo1

• DOI: 10.2210/pdb6BPZ/pdb
• EMDataBank: EMD-7128

• Classification: MEMBRANE PROTEIN
• Organism(s): Mus musculus
• Expression System: Homo sapiens


• Deposited: 2017-11-27 Released: 2017-12-27 
• Deposition Author(s): Saotome, K., Kefauver, J.M., Patapoutian, A., Ward, A.B.
• Funding Organization(s): Ray Thomas Edwards Foundation; National Institutes of Health/National Institute of Neurological Disorders and Stroke; National Institutes of Health/National Institute of Dental and Craniofacial Research; Howard Hughes Medical Institute 

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.8 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structure of the mechanically activated ion channel Piezo1.

Saotome, K., Murthy, S.E., Kefauver, J.M., Whitwam, T., Patapoutian, A., Ward, A.B.

(2018) Nature 554: 481-486

• PubMed: 29261642 
• DOI: 10.1038/nature25453


• PubMed Abstract: 
  

Piezo1 and Piezo2 are mechanically activated ion channels that mediate touch perception, proprioception and vascular development. Piezos are distinct from other ion channels and their structure remains poorly defined, impeding detailed study of their gating and ion permeation properties. Here we report a high-resolution cryo-electron microscopy structure of the mouse Piezo1 trimer. The detergent-solubilized complex adopts a three-blade propeller shape with a curved transmembrane region containing at least 26 transmembrane helices per protomer. The flexible propeller blades can adopt distinct conformations, and consist of a series of four-transmembrane helix bundles we term 'Piezo repeats'. Carboxy-terminal domains line the central ion pore, and the channel is closed by constrictions in the cytosol. A kinked helical beam and anchor domain link the Piezo repeats to the pore, and are poised to control gating allosterically. The structure provides a springboard to dissect further how Piezos are regulated by mechanical force.

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Organizational Affiliation: 

Howard Hughes Medical Institute, Department of Neuroscience, The Scripps Research Institute, La Jolla, CA 92037, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Piezo-type mechanosensitive ion channel component 1,Piezo-type mechanosensitive ion channel component 1,mouse Piezo1,Piezo-type mechanosensitive ion channel component 1,Piezo-type mechanosensitive ion channel component 1	A, B, C	1423	Mus musculus	Mutation(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

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
UNK	A, B, C	L-PEPTIDE LINKING	C4 H9 N O2		--

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.8 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Software Package:

Software Name	Purpose
PHENIX	refinement

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2017-11-27 
• Released Date: 2017-12-27 
• Deposition Author(s): Saotome, K., Kefauver, J.M., Patapoutian, A., Ward, A.B.

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Funding Organization	Location	Grant Number
Ray Thomas Edwards Foundation	United States	--
National Institutes of Health/National Institute of Neurological Disorders and Stroke	United States	NS083174
National Institutes of Health/National Institute of Dental and Craniofacial Research	United States	DE022358
Howard Hughes Medical Institute	United States	--

Revision History 

• Version 1.0: 2017-12-27
  Type: Initial release
• Version 1.1: 2018-01-03
  Type: Database references
• Version 1.2: 2018-03-07
  Type: Database references