| Literature DB >> 10224238 |
G B Gurrola1, B Rosati, M Rocchetti, G Pimienta, A Zaza, A Arcangeli, M Olivotto, L D Possani, E Wanke.
Abstract
Toxins isolated from a variety of venoms are tools for probing the physiological function and structure of ion channels. The ether-a-go-go-related genes (erg) codify for the K+ channels (ERG), which are crucial in neurons and are impaired in human long-QT syndrome and Drosophila 'seizure' mutants. We have isolated a peptide from the scorpion Centruroides noxius Hoffmann that has no sequence homologies with other toxins, and demonstrate that it specifically inhibits (IC50=16+/-1 nM) only ERG channels of different species and distinct histogenesis. These results open up the possibility of investigating ERG channel structure-function relationships and novel pharmacological tools with potential therapeutic efficacy.Entities:
Mesh：
Substances：
Year: 1999 PMID： 10224238
Source DB: PubMed Journal: FASEB J ISSN： 0892-6638 Impact factor: 5.191