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Smad4 | Mothers against decapentaplegic homolog 4; Common SMAD (co-SMAD) is the coactivator and mediator of signal transduction by TGF-beta (transforming growth factor). Component of the heterotrimeric SMAD2/SMAD3-SMAD4 complex that forms in the nucleus and is required for the TGF-mediated signaling. Promotes binding of the SMAD2/SMAD4/FAST-1 complex to DNA and provides an activation function required for SMAD1 or SMAD2 to stimulate transcription. Component of the multimeric SMAD3/SMAD4/JUN/FOS complex which forms at the AP1 promoter site; required for synergistic transcriptional activity in r [...] (551 aa) | ||||
Sox15 | Protein SOX-15; Transcription factor that binds to DNA at the 5'-AACAATG-3' consensus sequence. Acts as a transcriptional activator and repressor. Binds synergistically with POU5F1 (OCT3/4) to gene promoters. Binds to the FOXK1 promoter and recruits FHL3, resulting in transcriptional activation of FOXK1 which leads to myoblast proliferation. Acts as an inhibitor of myoblast differentiation via transcriptional repression which leads to down-regulation of the muscle-specific genes MYOD and MYOG. Involved in trophoblast giant cell differentiation via enhancement of HAND1 transcriptional a [...] (231 aa) |