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 ...

As you read this, a gate made of nothing is causing your heart to race. A vapor barrier is not a door, a valve, or a protein ...

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 ...

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 ...

Two studies by scientists at the University of Chicago have demonstrated a new way to look into the inner workings of cells—in particular, to track the flow of ions inside the many tiny organelles ...

Potassium (K, atomic number 19) is an alkali metal and its ions (K+) are necessary for the function of all living cells. Potassium is important in hyperpolarization of membranes during nerve ...