cytoskeleton organization, response to endogenous stimulus, response to hormone stimulus, response to organic substance, cellular component assembly involved in morphogenesis, actin filament-based process, actin cytoskeleton organization, myofibril assembly, actomyosin structure organization, cellular component morphogenesis, muscle cell differentiation, response to estrogen stimulus, sarcomere organization, response to steroid hormone stimulus,striated muscle cell differentiation, muscle cell development, striated muscle cell development,
Expressed in a defined zone of basal keratinocytes in the deep outer root sheath of hair follicles. Also observed in sweat gland and mammary gland ductal and secretory cells, bile ducts, gastrointestinal tract, bladder urothelium, oral epithelia, esophagus, ectocervical epithelium (at protein level). Expressed in epidermal basal cells, in nipple epidermis and a defined region of the hair follicle. Also seen in a subset of vascular wall cells in both the veins and artery of human umbilical cord, and in umbilical cord vascular smooth muscle. Observed in muscle fibers accumulating in the costameres of myoplasm at the sarcolemma in structures that contain dystrophin and spectrin.