[Signaling pathways of transforming growth factor beta family members]
- PMID: 17536504
[Signaling pathways of transforming growth factor beta family members]
Abstract
Transforming growth factor beta (TGF-beta) signaling controls varies of cellular processes, including cell proliferation, differentiation, fibrosis, apoptosis and specification of developmental fate during embryogenesis as well as in mature tissues. The members of TGF-betas family are secreted as inactive (latent) precursors, what prevents uncontrolled activation of the cognate receptors. After activation TGF-beta ligand initiates signaling by binding to and bringing together type I and type II receptor serine/threronine kinases on the cell surface. Recent cellular, biochemical and structural studies have revealed significant insight into the mechanisms of the activation of TGF-beta receptors through ligand binding, the activation of Smad proteins through phosphorylation as well as Smad independent pathways.
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