ISDA: 1UJL

Deposition Date 2003-08-05

Release Date 2003-11-04

Last Version Date 2023-12-27

Entry Detail

PDB ID:

1UJL

Keywords:

MEMBRANE PROTEIN

Title:

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

Biological Source:

Source Organism:

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

1600

Conformers Submitted:

Selection Criteria:

structures with the lowest energy

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Potassium voltage-gated channel subfamily H member 2
Gene (Uniprot):KCNH2
Chain IDs:A
Chain Length:42
Number of Molecules:1
Biological Source:

UniProt ID:Q12809

Ligand Molecules

Primary Citation

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.Show

J.Biol.Chem. 278 42136 42148 (2003)

PMID: 13680209 DOI: 10.1074/jbc.M212824200

Abstact

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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Primary Citation of related structures