IndraLab
Statements
reach
"In canonical TGF-β signaling, the C-terminal regions of the SMAD2 and SMAD3 proteins [23,24] are phosphorylated by the activated TBRI [25], allowing association with the co-mediator SMAD4 and nuclear accumulation of the SMAD2/3 complex where it can then regulate transcription of downstream genes [26]."