Connexon: A special type of protein composed of an assembly of six subunits that are called connexins. A connexon of one cell is joined to that of an adjacent cell to form an intercellular channel consisting of 12 connexin subunits. Clusters of intercellular channels are known as a gap junction because of the minute extracellular "gap" that separates the apposed plasma membranes. Each intercellular channel provides an axial channel that interconnects the cytoplasm of the apposed cell directly and permits the passage of ion and other small molecules between adjacent cells.
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Structure . One connexon is made out of six connexin proteins. It is a hemichannel of a gap junction channel; one such channel needs two connexons.
In biology, a connexon is an assembly of six proteins called connexin. s that can be a part of a gap junction. channel between the cytoplasm. of two adjacent cells
connexon [kÉ™nekâ€²son] Etymology: L, con + nectere, to bind the functional unit of a gap junction; the hexagonal array of membrane-spanning proteins around a central ...