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| The sodium-potassium pump is an [[Antiporter|antiporter]] transport [[Protein|protein]] <ref>Alberts et al. 2008, pg 661</ref>. This pump is responsible for the usage of almost 30% of the body's [[ATP|ATP]], this is due to 1 molecule of [[ATP|ATP]] being hydrolysed as three molecules of [[Sodium|Na]]<sup>[[Sodium|+]]</sup> are pumped out of the cell and two molecules of [[Potassium|K]]<sup>[[Potassium|+]]</sup> are pumped into the cell <ref>Alberts et al. 2008, pg 661</ref>. The sodium-potassium pump is a very important protein in our cell membranes. The pump can be used to generate [[ATP|ATP]] when supplies are low by working in the opposite way <ref>Alberts et al. 2008, pg 662</ref>. The pump is also used to control the osmolarity of the [[Cell|cell]], by pumping the [[Sodium|Na]]<sup>[[Sodium|+]]</sup> out that have diffused into the cell down their high [[Electrochemical gradient|electrochemical gradient]] the cell can be kept at osmotic equilibrium <ref>Alberts et al. 2008 pg 663</ref>. The pump plays a large role in nerve cells and initiating [[Action_potential|action potentials]]. [[Action_potential|Action potentials]] could not occur without these cells. They initiate the first part of the depolarisation before the voltage gated channels come into play. The sodium-potassium pumps also recover the axon to its resting state of -60mV after and action potential has passed.
| | See [[Na+/K+ ATPase pump|Na]]<sup>[[Na+/K+ ATPase pump|+]]</sup>[[Na+/K+ ATPase pump|/K]]<sup>[[Na+/K+ ATPase pump|+]] </sup>[[Na+/K+ ATPase pump|ATPase pump]] |
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| === References ===
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| <references />
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Latest revision as of 17:23, 9 January 2011