To regulate signal transduction pathways? These molecules can directly convert extracellular signals into intracellular signals. .
Maybe, not sure, may need to check yahoo answers for this one
The answer is desmosomes. These are inter-cellular hyper-adhesive
between cells that prevent easy tear from mechanical stress. They bestow mechanical strength to tissue. They
are found in tissues such as the cardiac tissue and epithelia. Desmosomes are
composed of intermediate filaments.