Connexins are a family of proteins that form gap junctions, which are channels that allow for direct communication and transfer of molecules between adjacent cells. These channels are crucial for cell signaling, growth, and development. Connexins have been implicated in a variety of physiological processes, including cardiac function, neuronal signaling, and immune response. Abnormalities in connexin expression or function have been associated with various diseases, such as heart arrhythmias, deafness, and skin disorders. Research in this area focuses on understanding the molecular mechanisms of connexin function and their role in health and disease.