期刊
NEUROSCIENCE LETTERS
卷 486, 期 2, 页码 84-91出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2010.08.077
关键词
Ion channel; Voltage-clamp; Tetrodotoxin; Dorsal root ganglion
资金
- Medical Research Service, Department of Veterans Affairs
- Rehabilitation Research Service, Department of Veterans Affairs
Voltage-gated sodium channels are cell membrane glycoproteins responsible for action potential generation and propagation in excitable cells. These large polypeptides which are comprised of 24 transmembrane segments organized into four domains require cellular factors to regulate channel maturation and sorting to different cellular compartments, anchoring the channels at plasma membrane, and modulating gating properties of these channels as effector molecules in the signal transduction pathway. Mutations of sodium channels or their cytosolic partners produce similar pathologies, providing a compelling evidence for the biological significance of channel complexes that form during channel biogenesis and following sorting to different cellular compartments and anchoring at plasma membrane. Genetic, biochemical and bioinformatic approaches have been utilized to identify sodium channel partners. Here we review the important functional role of pan-sodium channel and isoform-specific partners in regulating sodium current density and gating properties. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
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