|Jul11-09, 01:12 AM||#1|
Potassium Channel ion rate and Gradient
A potassium channel is designed to filter out potassium ions at a maximum rate of 100,000,000 ions s-1
A common concentration (cell's interior) of potassium is 100 mM and 5 mM outside.
This means there is 553 water molecules for 1 potassium ion inside (55.3/0.100) and 11,060 water molecules for a ion outside (55.3/0.005).
If the channel acts as a sieve then what happen to the local concentrations, inside and outside?
ps: local concentration (concentration that exists just around the channel ~ few nm)
|Apr20-10, 12:32 AM||#2|
|concentration, gradient, ion channel, potassium, rate|
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