An ion-exchange resin is a crosslinked polymer containing acidic or basic structural units that can exchange either cations or anions respectively on contact with a solution. Cation-exchange resins ...

Uptake of potassium by bacteria is regulated by a single protein that senses the concentration of this cation both inside the cell and in the external medium, and controls the expression of the ...

Ion selectivity is an important property of cell membrane ion channels. For example, potassium ion channels are more permeable to potassium ions than to sodium ions. The mechanism underlying the ready ...

Uptake of potassium by bacteria is regulated by a single protein that senses the concentration of this cation both inside the cell and in the external medium, and controls the expression of the ...

COUPLING between the movements of sodium out of, and potassium into, human erythrocytes was discussed some time ago 1. Although the concept of coupling between the active movements of sodium and ...

Resodec, § the exchange resin used in the patients described in this report, is an acrylic polymer of heavy molecular weight, whose carboxylic radicals can readily adsorb and release cations to which ...

To pump the hydrogen ions into the stomach, the protein first needs to bind to a potassium ion (K +). Similar proteins typically bind two such potassium ions to trigger the pump mechanism. But H + /K ...

Potassium, the major intracellular cation in the body, is required for normal cellular function. Severe potassium deficiency is characterized by hypokalemia—a serum potassium concentration of less ...