Follistatin is a secreted protein that contains three conserved follistatin domains (FSDs) and binds several members of the transforming growth factor beta (TGF-β) family including activins, myostatin, and bone morphogenetic proteins (BMPs). Binding to follistatin abrogates signaling activity of these proteins. The name follistatin is derived from its ability to block activin-induced secretion of follicle-stimulating hormone (FSH) from the pituitary. Follistatin-like (FTSL) proteins contain at least one FSD and have heterogeneous, hitherto only partly characterized, functions.
Secreted follistatin exists in three main forms consisting of 288, 303, and 315 amino acids. The FST...
KeywordsChronic Lymphocytic Leukemia Amino Acid Form Activin Signal Nonalcoholic Liver Disease Follistatin Expression
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