Structure-based Assessment of Disease-related Mutations in Human Voltage-gated Sodium Channels

Overview

Journal Protein Cell

Publisher Oxford University Press

Specialties Biochemistry
Cell Biology

Date 2017 Feb 3

PMID 28150151

Citations 59

Authors

Weiyun Huang

Minhao Liu

S Frank Yan

Nieng Yan

Affiliations

Soon will be listed here.

Abstract

Voltage-gated sodium (Na) channels are essential for the rapid upstroke of action potentials and the propagation of electrical signals in nerves and muscles. Defects of Na channels are associated with a variety of channelopathies. More than 1000 disease-related mutations have been identified in Na channels, with Na1.1 and Na1.5 each harboring more than 400 mutations. Na channels represent major targets for a wide array of neurotoxins and drugs. Atomic structures of Na channels are required to understand their function and disease mechanisms. The recently determined atomic structure of the rabbit voltage-gated calcium (Ca) channel Ca1.1 provides a template for homology-based structural modeling of the evolutionarily related Na channels. In this Resource article, we summarized all the reported disease-related mutations in human Na channels, generated a homologous model of human Na1.7, and structurally mapped disease-associated mutations. Before the determination of structures of human Na channels, the analysis presented here serves as the base framework for mechanistic investigation of Na channelopathies and for potential structure-based drug discovery.

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