5VA2

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

  • Classification: TRANSPORT PROTEIN
  • Organism(s): Homo sapiens
  • Expression System: Homo sapiens

  • 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; Howard Hughes Medical Institute 

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.8 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

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

  • DOI: 10.1016/j.cell.2017.03.048
  • Primary Citation of Related Structures:  

  • 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 t ...

    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.

    Organizational Affiliation: 

    Laboratory of Molecular Neurobiology and Biophysics, The Rockefeller University and Howard Hughes Medical Institute, 1230 York Avenue, New York, NY 10065, USA.,Laboratory of Molecular Neurobiology and Biophysics, The Rockefeller University and Howard Hughes Medical Institute, 1230 York Avenue, New York, NY 10065, USA. Electronic address: mackinn@rockefeller.edu.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Potassium voltage-gated channel subfamily H member 2
A
825Homo sapiensMutation(s): 0 
Gene Names: KCNH2 (ERG, ERG1, HERG)
Membrane protein
mpstruct		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)
Go to Gene View: KCNH2
Go to UniProtKB:  Q12809
Experimental Data & Validation

Experimental Data

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

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesNIHGM43949
Howard Hughes Medical InstituteUnited StatesR. 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
    Type: Author supporting evidence, Data collection
  • Version 1.2: 2018-07-18
    Type: Data collection