- Interactions of human Myosin Va isoforms, endogenously expressed in human melanocytes, are tightly regulated by the tail domain. Westbroek, W., Lambert, J., Bahadoran, P., Busca, R., Herteleer, M.C., Smit, N., Mommaas, M., Ballotti, R., Naeyaert, J.M. J. Invest. Dermatol. (2003)