Enables the energy-independent facilitated diffusion of a solute through a transmembrane aqueous pore or channel. Stereospecificity is not exhibited but this transport may be specific for a particular molecular species or class of molecules.
TC:1
;
reactome:R-HSA-3779381 "H2O2 diffuses from the mitochondrial matrix to the cytosol"
;
reactome:R-HSA-8953430 "PXMP2 trimer transports glycolate from cytosol to peroxisomal matrix"