gap junction channel activity intercellular channel connexin A wide pore channel activity that enables a direct cytoplasmic connection from one cell to an adjacent cell. The gap junction can pass large solutes as well as electrical signals between cells. Gap junctions consist of two gap junction hemi-channels, or connexons, one contributed by each membrane through which the gap junction passes. innexin channel activity Reactome:R-HSA-190681 GO:0005243 innexin Reactome:R-HSA-375340 Reactome:R-HSA-375342 Reactome:R-HSA-375330 molecular_function Reactome:R-HSA-375339 GO:0015285 GO:0015286 wide pore channel activity