Deubiquitylating enzyme USP2 counteracts Nedd4-2-mediated downregulation of KCNQ1 potassium channels

Krzystanek, Katarzyna; Rasmussen, Hanne Borger; Grunnet, Morten; Staub, Olivier; Olesen, Søren-Peter; Abriel, Hugues; Jespersen, Thomas (2012). Deubiquitylating enzyme USP2 counteracts Nedd4-2-mediated downregulation of KCNQ1 potassium channels. Heart, 9(3), pp. 440-8. London: BMJ Publishing Group 10.1016/j.hrthm.2011.10.026

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KCNQ1 (Kv7.1), together with its KCNE β subunits, plays a pivotal role both in the repolarization of cardiac tissue and in water and salt transport across epithelial membranes. Nedd4/Nedd4-like (neuronal precursor cell-expressed developmentally downregulated 4) ubiquitin-protein ligases interact with the KCNQ1 potassium channel through a PY motif located in the C terminus of KCNQ1. This interaction induces ubiquitylation of KCNQ1, resulting in a reduced surface density of the channel. It was reported recently that the epithelial sodium channel is regulated by the reverse process-deubiquitylation-mediated by USP2 (ubiquitin-specific protease 2).

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DBMR Forschung Mu35 > Forschungsgruppe Ionenkanalkrankheiten
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DBMR Forschung Mu35 > Forschungsgruppe Ionenkanalkrankheiten

UniBE Contributor:

Abriel, Hugues

ISSN:

1355-6037

Publisher:

BMJ Publishing Group

Funders:

[4] Swiss National Science Foundation

Projects:

[12] In vivo relevance of the PY and PDZ-domain binding motifs of the cardiac sodium channel Nav1.5 Official URL

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:20

Last Modified:

06 Dec 2013 13:27

Publisher DOI:

10.1016/j.hrthm.2011.10.026

PubMed ID:

22024150

Web of Science ID:

000300712700028

URI:

https://boris.unibe.ch/id/eprint/6853 (FactScience: 211892)

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