raku plasmamembraanis asuv veega täidetud poor, mis tekib kuuest konneksiini alaühikust kui need moodustavad rõnga, A connexon, also known as a connexin hemichannel, is an assembly of six proteins called connexins that form the pore for a gap junction between the cytoplasm of two adjacent cells. This channel allows for bidirectional flow of ions and signaling molecules