group of transport proteins catalyzing movement of solutes by an energy-independent process by passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism, and consisting largely of α-helical spanners
group of transport proteins catalyzing movement of solutes by an energy-independent process by passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism, and consisting largely of α-helical spanners (en)