Catenins are a family of proteins that play a crucial role in cell adhesion and signaling. They are primarily found in the cell membrane, where they connect cadherins, a type of adhesion molecule, to the cytoskeleton. This connection helps maintain the structural integrity of tissues and facilitates communication between cells. In addition to their role in cell adhesion, catenins are involved in various cellular processes, including cell proliferation and differentiation. They can also interact with other signaling pathways, influencing how cells respond to their environment. Dysregulation of catenins has been linked to several diseases, including cancer.