$\mathrm{Na}^{+} / \mathrm{K}^{+}$pump is associated with

Sodium-potassium pump $\left(\mathrm{Na}^{+}-\mathrm{K}^{+}\right)$is a membrane transport protein that exchanges sodium ions $\left(\mathrm{Na}^{+}\right)$for potassium ions $\left(\mathrm{K}^{+}\right)$. It transports $3 \mathrm{Na}^{+}$outwards for $2 \mathrm{~K}^{+}$into the cell, thus maintaining the differential concentrations of each ion across the plasma membrane. The process requires energy in the form of ATP, being a form of active transport.