Movement of ions through fixed pores in the neural membrane.
نویسنده
چکیده
A simple configuration is first proposed for the pores used by sodium and potassium ions in moving through the neural membrane. The voltage dependence of the ion current through a system of such pores is then derived from diffusion theory and shown not to agree well with experimental observation. Good agreement is obtained, however, when the end segments of the pores are modified to include constrictions and ion-specific trapping centers.
منابع مشابه
Simulation study of the transport properties of ions through ion channels serving as primary components of a nanobiosensor
Ion channels are naturally occurring pores through the proteins that regulate the passage of ions and thus maintain the concentration of ions inside and outside the cell. The ion channels control many physiological functions and they can show selectivity for a specific ion. Ion channels are mostly observed in nerve cells and muscle cells. The influx of ions into cells can be regulated by a gate...
متن کاملSimulation study of the transport properties of ions through ion channels serving as primary components of a nanobiosensor
Ion channels are naturally occurring pores through the proteins that regulate the passage of ions and thus maintain the concentration of ions inside and outside the cell. The ion channels control many physiological functions and they can show selectivity for a specific ion. Ion channels are mostly observed in nerve cells and muscle cells. The influx of ions into cells can be regulated by a gate...
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ورودعنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 81 17 شماره
صفحات -
تاریخ انتشار 1984