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Connexins (Cxs) form hemichannels and gap junction channels. Each gap junction channel is composed of two hemichannels, also termed connexons, one from each of the coupled cells. Hemichannels are hexamers assembled in the ER, the Golgi, or a post Golgi compartment. They are transported to the cell surface in vesicles and inserted by vesicle fusion, and then dock with a hemichannel in an apposed membrane...
The main proteins required for functional gap junction channels are known as connexins and most of their isoforms indicate that they can become phosphorylated. Connexin phosphorylation has been reported to participate in modifying junctional communication and the mechanisms involved apparently depend on which kinase becomes involved. Although multiple reports have suggested a strong influence of phosphorylation...
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