Connexin 30 is a protein that forms gap junctions, which are channels that allow communication between adjacent cells. It is primarily found in the central nervous system and skin, playing a crucial role in maintaining cellular homeostasis and facilitating the exchange of ions and small molecules. Mutations in the GJB6 gene, which encodes Connexin 30, can lead to various health issues, including hearing loss and skin disorders. This protein works alongside other connexins, such as Connexin 26, to ensure proper cellular function and communication in tissues.