NaKATPase

Na+/K+-ATPase (also known as the Na+/K+ pump or Na+/K+ exchanger) is an enzyme () located in the plasma membrane (specifically an electrogenic transmembrane ATPase). It is found in the plasma membrane of virtually every human cell and is common to all cellular life. It helps maintain cell potential and regulate cellular volume.

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To maintain the cell potential, cells need to keep a low concentration of sodium ions, and high levels of potassium ions within the cell (intracellular). Outside cells (extracellular), there are high concentrations of sodium and low concentrations of potassium, so diffusion occurs through ion channels in the plasma membrane. To keep the appropriate concentrations the sodium-potassium pump pumps sodium out and potassium in.

Enzyme: An enzyme (from Greek ?nsimo (??????), formed by ?n = at or in and simo = leaven or yeast) is a protein that catalyzes, or speeds up, a chemical reaction....

Plasma membrane: REDIRECT Cell membrane...

Transmembrane ATPase: REDIRECT ATPase...