[Term] id: PR:000049983 name: ion channel protein def: "A channel protein that has ion channel activity. An ion channel enables the facilitated diffusion of an ion (by an energy-independent process) by passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism." [IUPHARfam:689, PRO:XQ] comment: Category=family. synonym: "fam:ion_chan" EXACT PRO-short-label [PRO:DAN] xref: IUPHARfam:689 intersection_of: capable_of GO:0005216 ! ion channel activity intersection_of: PR:000044676 ! channel protein