Transport Across the Cell Membrane

Facilitated diffusion is a process by which molecules are transported across the plasma membrane with the help of membrane proteins.

The sodium-potassium pump maintains the electrochemical gradient of living cells by moving sodium in and potassium out of the cell.

ABC transporters are a protein superfamily that all have an ATP binding cassette and transport substances across membranes.

Siderophores are classified by which ligands they use to chelate the ferric iron, including the catecholates, hydroxamates, and carboxylates.

Group translocation is a protein export or secretion pathway found in plants, bacteria, and archaea.