2L4R

NMR solution structure of the N-terminal PAS domain of hERG


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

NMR solution structure of the N-terminal domain of hERG and its interaction with the S4-S5 linker.

Li, Q.Gayen, S.Chen, A.S.Huang, Q.Raida, M.Kang, C.

(2010) Biochem.Biophys.Res.Commun. 403: 126-132

  • DOI: 10.1016/j.bbrc.2010.10.132

  • PubMed Abstract: 
  • The human Ether-à-go-go Related Gene (hERG) potassium channel mediates the rapid delayed rectifier current (IKr) in the cardiac action potential. Mutations in the 135 amino acid residue N-terminal domain (NTD) cause channel dysfunction or mis-translo ...

    The human Ether-à-go-go Related Gene (hERG) potassium channel mediates the rapid delayed rectifier current (IKr) in the cardiac action potential. Mutations in the 135 amino acid residue N-terminal domain (NTD) cause channel dysfunction or mis-translocation. To study the structure of NTD, it was overexpressed and purified from Escherichia coli cells using affinity purification and gel filtration chromatography. The purified protein behaved as a monomer under purification conditions. Far- and near-UV, circular dichroism (CD) and solution nuclear magnetic resonance (NMR) studies showed that the purified protein was well-folded. The solution structure of NTD was obtained and the N-terminal residues 13-23 forming an amphipathic helix which may be important for the protein-protein or protein-membrane interactions. NMR titration experiment also demonstrated that residues from 88 to 94 in NTD are important for the molecular interaction with the peptide derived from the S4-S5 linker.


    Organizational Affiliation

    Experimental Therapeutics Center, The Agency for Science, Technology and Research, 31 Biopolis Way Nanos, #03-01, Singapore 138669, Singapore.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Potassium voltage-gated channel subfamily H member 2
A
135Homo sapiensMutation(s): 0 
Gene Names: KCNH2 (ERG, ERG1, HERG)
Find proteins for Q12809 (Homo sapiens)
Go to Gene View: KCNH2
Go to UniProtKB:  Q12809
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2L4R Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-12-22
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance