7BWI

Solution structure of recombinant APETx1


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Mechanism of hERG inhibition by gating-modifier toxin, APETx1, deduced by functional characterization.

Matsumura, K.Shimomura, T.Kubo, Y.Oka, T.Kobayashi, N.Imai, S.Yanase, N.Akimoto, M.Fukuda, M.Yokogawa, M.Ikeda, K.Kurita, J.I.Nishimura, Y.Shimada, I.Osawa, M.

(2021) BMC Mol Cell Biol 22: 3-3

  • DOI: 10.1186/s12860-020-00337-3
  • Primary Citation of Related Structures:  
    7BWI

  • PubMed Abstract: 
  • Human ether-à-go-go-related gene potassium channel 1 (hERG) is a voltage-gated potassium channel, the voltage-sensing domain (VSD) of which is targeted by a gating-modifier toxin, APETx1. APETx1 is a 42-residue peptide toxin of sea anemone Anthopleura elegantissima and inhibits hERG by stabilizing the resting state ...

    Human ether-à-go-go-related gene potassium channel 1 (hERG) is a voltage-gated potassium channel, the voltage-sensing domain (VSD) of which is targeted by a gating-modifier toxin, APETx1. APETx1 is a 42-residue peptide toxin of sea anemone Anthopleura elegantissima and inhibits hERG by stabilizing the resting state. A previous study that conducted cysteine-scanning analysis of hERG identified two residues in the S3-S4 region of the VSD that play important roles in hERG inhibition by APETx1. However, mutational analysis of APETx1 could not be conducted as only natural resources have been available until now. Therefore, it remains unclear where and how APETx1 interacts with the VSD in the resting state.


    Organizational Affiliation

    Graduate School of Pharmaceutical Sciences, Keio University, Shibakoen, Minato-ku, Tokyo, 105-8512, Japan. osawa-ms@pha.keio.ac.jp.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Kappa-actitoxin-Ael2aA42Anthopleura elegantissimaMutation(s): 0 
UniProt
Find proteins for P61541 (Anthopleura elegantissima)
Explore P61541 
Go to UniProtKB:  P61541
Entity Groups  
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UniProt GroupP61541
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 
  • OLDERADO: 7BWI Olderado

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Japan Society for the Promotion of Science (JSPS)JapanJP17H03978

Revision History  (Full details and data files)

  • Version 1.0: 2020-12-23
    Type: Initial release
  • Version 1.1: 2021-07-14
    Changes: Database references