SMAD3 Antibody – Mouse Monoclonal

The protein encoded by this gene belongs to the SMAD, a family of proteins similar to the gene products of the Drosophila gene 'mothers against decapentaplegic' (Mad) and the C. elegans gene Sma. SMAD proteins are signal transducers and transcriptional modulators that mediate multiple signaling pathways. This protein functions as a transcriptional modulator activated by transforming growth factor-beta and is thought to play a role in the regulation of carcinogenesis. [provided by RefSeq, Apr 2009]

SMAD3: transcription factor phosphorylated and activated by TGF-beta-type receptors. A receptor-regulated Smad (R-smad). Binds directly to consensus DNA-binding elements in the promoters of target genes. In mouse required for establishemnt of the mucosal immune response and proper development of skeleton.

Protein type: DNA-binding; Nuclear receptor co-regulator; Transcription factor

Chromosomal Location of Human Ortholog: 15q22.33

Cellular Component: cytoplasm; cytosol; nuclear chromatin; nuclear inner membrane; nucleoplasm; nucleus; receptor complex; transcription factor complex

Molecular Function: bHLH transcription factor binding; identical protein binding; phosphatase binding; protein binding; protein homodimerization activity; protein kinase binding; sequence-specific DNA binding; transcription factor activity; transcription factor binding; transforming growth factor beta receptor binding; transforming growth factor beta receptor, pathway-specific cytoplasmic mediator activity; ubiquitin binding; ubiquitin protein ligase binding; zinc ion binding

Biological Process: activin receptor signaling pathway; caspase activation; cell cycle arrest; evasion of host defenses by virus; immune response; intercellular junction assembly and maintenance; negative regulation of cell growth; negative regulation of fat cell differentiation; negative regulation of mitotic cell cycle; negative regulation of transcription from RNA polymerase II promoter; negative regulation of transforming growth factor beta receptor signaling pathway; positive regulation of nitric oxide biosynthetic process; positive regulation of transcription factor import into nucleus; positive regulation of transcription from RNA polymerase II promoter; positive regulation of transcription, DNA-dependent; primary microRNA processing; reduction of cytosolic calcium ion concentration; regulation of transcription from RNA polymerase II promoter; regulation of transforming growth factor beta receptor signaling pathway; regulation of transforming growth factor-beta2 production; response to hypoxia; SMAD protein complex assembly; transforming growth factor beta receptor signaling pathway; transport; wound healing

Disease: Loeys-dietz Syndrome 3