Ontology highlight
ABSTRACT:
SUBMITTER: Jiang D
PROVIDER: S-EPMC7782738 | biostudies-literature | 2021 Jan
REPOSITORIES: biostudies-literature
Jiang Daohua D Tonggu Lige L Gamal El-Din Tamer M TM Banh Richard R Pomès Régis R Zheng Ning N Catterall William A WA
Nature communications 20210104 1
Voltage-gated sodium (Na<sub>V</sub>) channels initiate action potentials in excitable cells, and their function is altered by potent gating-modifier toxins. The α-toxin LqhIII from the deathstalker scorpion inhibits fast inactivation of cardiac Na<sub>V</sub>1.5 channels with IC<sub>50</sub> = 11.4 nM. Here we reveal the structure of LqhIII bound to Na<sub>V</sub>1.5 at 3.3 Å resolution by cryo-EM. LqhIII anchors on top of voltage-sensing domain IV, wedged between the S1-S2 and S3-S4 linkers, w ...[more]