1UJL

Solution Structure of the HERG K+ channel S5-P extracellular linker

• PDB DOI: https://doi.org/10.2210/pdb1UJL/pdb
• BMRB: 5922

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2003-08-05 Released: 2003-11-04 
• Deposition Author(s): Torres, A.M., Bansal, P.S., Sunde, M., Clarke, C.E., Bursill, J.A., Smith, D.J., Bauskin, A., Breit, S.N., Campbell, T.J., Alewood, P.F., Kuchel, P.W., Vandenberg, J.I.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 1600 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Structure of the HERG K+ channel S5P extracellular linker: role of an amphipathic alpha-helix in C-type inactivation.

Torres, A.M., Bansal, P.S., Sunde, M., Clarke, C.E., Bursill, J.A., Smith, D.J., Bauskin, A., Breit, S.N., Campbell, T.J., Alewood, P.F., Kuchel, P.W., Vandenberg, J.I.

(2003) J Biol Chem 278: 42136-42148

• PubMed: 13680209 
• DOI: https://doi.org/10.1007/s00249-003-0338-3
• Primary Citation of Related Structures:  
  1UJL


• PubMed Abstract: 
  

  The HERG K+ channel has very unusual kinetic behaviour that includes slow activation but rapid inactivation. These features are critical for normal cardiac repolarisation as well as in preventing lethal ventricular arrhythmias. Extensive mutagenesis of the HERG K+ channel has allowed identification of which regions of the channel are important for the unusual kinetic behaviour of the channel. Furthermore, structural studies on scorpion toxins that potently inhibit HERG are beginning to provide clues as to the structural differences between HERG and other voltage-gated K+ channels.

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Organizational Affiliation: 

Victor Chang Cardiac Research Institute, Level 9, 384 Victoria Street, Darlinghurst, NSW, 2010, Australia. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 4.59 kDa 
• Atom Count: 322 
• Modelled Residue Count: 42 
• Deposited Residue Count: 42 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Potassium voltage-gated channel subfamily H member 2	A	42	N/A	Mutation(s): 0  Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for Q12809 (Homo sapiens) Explore Q12809  Go to UniProtKB:  Q12809
PHAROS:  Q12809 GTEx:  ENSG00000055118

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 1600 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-11-04 
Deposition Author(s): Torres, A.M., Bansal, P.S., Sunde, M., Clarke, C.E., Bursill, J.A., Smith, D.J., Bauskin, A., Breit, S.N., Campbell, T.J., Alewood, P.F., Kuchel, P.W., Vandenberg, J.I.

Revision History  

• Version 1.0: 2003-11-04
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-03-02
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2023-12-27
  Changes: Data collection