Biological Assembly 1  

 3D View: Structure

Global Symmetry: Cyclic - C4  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 92.28 kDa 
• Atom Count: 4394 
• Residue Count: 558 
• Unique protein chains: 1

5VA2

Cryo-EM structure of the human ether-a-go-go related K+ channel

• DOI: 10.2210/pdb5VA2/pdb
• EMDataResource: EMD-8651

• Classification: TRANSPORT PROTEIN
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2017-03-24 Released: 2017-05-03 
• Deposition Author(s): Wang, W.W., MacKinnon, R.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), Howard Hughes Medical Institute (HHMI)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM Structure of the Open Human Ether-a-go-go-Related K(+) Channel hERG.

Wang, W., MacKinnon, R.

(2017) Cell 169: 422-430.e10

• PubMed: 28431243 
• DOI: 10.1016/j.cell.2017.03.048
• Primary Citation of Related Structures:  
  5VA1, 5VA3, 5VA2


• PubMed Abstract: 
  

The human ether-à-go-go-related potassium channel (hERG, Kv11.1) is a voltage-dependent channel known for its role in repolarizing the cardiac action potential. hERG alteration by mutation or pharmacological inhibition produces Long QT syndrome and the lethal cardiac arrhythmia torsade de pointes. We have determined the molecular structure of hERG to 3.8 Å using cryo-electron microscopy. In this structure, the voltage sensors adopt a depolarized conformation, and the pore is open. The central cavity has an atypically small central volume surrounded by four deep hydrophobic pockets, which may explain hERG's unusual sensitivity to many drugs. A subtle structural feature of the hERG selectivity filter might correlate with its fast inactivation rate, which is key to hERG's role in cardiac action potential repolarization.

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Organizational Affiliation: 

Laboratory of Molecular Neurobiology and Biophysics, The Rockefeller University and Howard Hughes Medical Institute, 1230 York Avenue, New York, NY 10065, USA. Electronic address: [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Potassium voltage-gated channel subfamily H member 2	A	825	Homo sapiens	Mutation(s): 0  Gene Names: KCNH2, ERG, ERG1, HERG
Membrane protein Mpstruc	Group:  TRANSMEMBRANE PROTEINS: ALPHA-HELICAL		Sub Group:  Channels: Potassium, Sodium, & Proton Ion-Selective	Protein:  hERG voltage-dependent K+ channel hERGT
Find proteins for Q12809 (Homo sapiens) Explore Q12809  Go to UniProtKB:  Q12809
NIH Common Fund Data Resources
PHAROS:  Q12809 GTEx:  ENSG00000055118

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2017-03-24 
• Released Date: 2017-05-03 
Deposition Author(s): Wang, W.W., MacKinnon, R.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	NIHGM43949
Howard Hughes Medical Institute (HHMI)	United States	R. M. is an investigator in the Howard Hughes Medical Institute

Revision History 

• Version 1.0: 2017-05-03
  Type: Initial release
  
• Version 1.1: 2017-09-13
  Changes: Author supporting evidence, Data collection
• Version 1.2: 2018-07-18
  Changes: Data collection
• Version 1.3: 2019-11-20
  Changes: Author supporting evidence