Ion transport is the movement of ions across a membrane, passively through ion channels or actively through ion pumps such as symporters and antiporters. The P2X4 receptor, an ATP-activated ion ...

Ion channels are integral membrane protein assemblies that modulate the flow of ions into and out of a cell or organelle, leading to generation of electrical signals. Opening (gating) of ion channels ...

Ligand-gated ion channels are ion channels that are opened or closed (gated) by ligands, generally small molecules such as the second messenger cAMP and neurotransmitters. Ligand-gated ion channels ...