Potassium was the most potent monovalent cation based on the induction of deflagellation and the formation of PA and PBut.

Protein 7.2b is believed to have a role in regulating monovalent cation transport through the erythrocyte membrane.

It induces depolarization in various types of cells by increasing the permeability for monovalent cations.

However, the G-stems are stabilized by a chain of monovalent cations that create sizable polarization effects.

We also confirm that the enzyme is not able to translocate other monovalent cations, such as potassium or rubidium.