One-fifth of a cell's energy expenditure goes to this protein, which restores a neuron's resting potential.
A mutation in a gene that heavily expresses this protein in astrocytes is the cause of the second subtype of familial hemiplegic migraine. Most members of the FXYD protein family regulate the activity of this protein. Jens Christian Skou won the 1997 Nobel in Chemistry for his discovery of this protein. In a treatment of heart failure, its action is blocked with the plant toxins digitalis and ouabain, indirectly causing the buildup of (*) calcium, resulting in an increase in heart contraction force. One-fifth of a cell's energy expenditure goes to this protein, which restores a neuron's resting potential. This protein releases three ions out of the cell and brings two in. For 10 points, name this protein which exchanges two namesake cations via an active transport mechanism.
A mutation in a gene that heavily expresses this protein in astrocytes is the cause of the second subtype of familial hemiplegic migraine.
sodium-potassium pump [or Na/K pump; or Na+/K+ ATPase; or sodium-potassium adenosine triphosphatase; or sodium-potassium antiporter]