SKI and SKIL (SNO) are able to recruit NCOR and possibly other transcriptional repressors to SMAD2/3:SMAD4 complex, inhibiting SMAD2/3:SMAD4-mediated transcription (Sun et al. 1999, Luo et al. 1999, Strochein et al. 1999). Experimental findings suggest that SMAD2 and SMAD3 may target SKI and SKIL for degradation (Strochein et al. 1999, Sun et al. 1999 PNAS, Bonni et al. 2001), and that the ratio of SMAD2/3 and SKI/SKIL determines the outcome (inhibition of SMAD2/3:SMAD4-mediated transcription or degradation of SKI/SKIL). SKI and SKIL are overexpressed in various cancer types and their oncogenic effect is connected with their ability to inhibit signaling by TGF-beta receptor complex.
|10549282||Interaction of the Ski oncoprotein with Smad3 regulates TGF-beta signaling||Mol Cell||1999|
|10531062||Negative feedback regulation of TGF-beta signaling by the SnoN oncoprotein||Science||1999|
|10485843||The Ski oncoprotein interacts with the Smad proteins to repress TGFbeta signaling||Genes Dev||1999|
|10535941||SnoN and Ski protooncoproteins are rapidly degraded in response to transforming growth factor beta signaling||Proc Natl Acad Sci U S A||1999|
|11389444||TGF-beta induces assembly of a Smad2-Smurf2 ubiquitin ligase complex that targets SnoN for degradation||Nat Cell Biol||2001|