Structural basis for voltage-sensor trapping of the cardiac sodium channel by a deathstalker scorpion toxin
The α-toxin LqhIII from the deathstalker scorpion inhibits fast inactivation of cardiac NaV1.5 channels. Here authors reveal the cryo-EM structure of LqhIII bound to NaV1.5 which shows that LqhIII traps the gating charges of the S4 segment in a unique intermediate-activated state and explains why Lq...
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Autores principales: | , , , , , , |
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Formato: | article |
Lenguaje: | EN |
Publicado: |
Nature Portfolio
2021
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Materias: | |
Acceso en línea: | https://doaj.org/article/551ce5bc8824402bb013e154205ef0bc |
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Sumario: | The α-toxin LqhIII from the deathstalker scorpion inhibits fast inactivation of cardiac NaV1.5 channels. Here authors reveal the cryo-EM structure of LqhIII bound to NaV1.5 which shows that LqhIII traps the gating charges of the S4 segment in a unique intermediate-activated state and explains why LqhIII slows inactivation of NaV channels but does not open them. |
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