What is the Sodium Potassium ATPase for?
Answer: It maintains normal intracellular and extracellular charge distribution for all cells by way of active transport. When it is phosphorylated, it changes conformation to allow 3 NA+ to bind and be released extracellularly. 2 K+ s then load in and are channeled into the cell. This happened as needed to maintain the normal charge distribution. Potassium leak channels also assist in maintaining this.