Ion channel and transporter (None universally used)

Ion channels are pore-forming membrane proteins that permit the rapid, selective flow of ions down their electrochemical gradients, thereby mediating electrical signaling, maintaining membrane potential, and regulating processes like neurotransmission and muscle contraction[4][2][7]. Ion transporters (sometimes called "pumps" or "carriers") are membrane proteins that actively or passively move ions against or along their concentration gradient, often utilizing ATP hydrolysis or secondary coupling with other gradients, crucial for establishing cellular homeostasis, energy production, and nutrient absorption[1][2]. Both groups are extensively diversified, with hundreds of families classified according to their transport mechanism, substrate specificity, energy source, and molecular structure[3][5][7]. Disruption of channel or transporter function leads to a wide spectrum of diseases, making these proteins major therapeutic targets in pharmacology and clinical medicine[6]. This entry covers two major membrane protein superfamilies and thus cannot be mapped to a unique, canonical target molecule. For structured databases or therapeutic target lists, each individual channel or transporter should be described independently.

Other names

Ion channelsIon transportersIon pumpsSolute carriersChannel proteins

Blockade of ion flux through channels; Modulation of gating properties (activation/inhibition); Inhibition or stimulation of active transport (e.g., ATPase inhibition); Alteration of solute carrier-mediated transport