background:
SKI is a nuclear protein that forms homodimers and heterodimers and binds to DNA to function as transcriptional activators and repressors. The SKI oncoprotein dramatically affects cell growth, differentiation, and/or survival. SKI was shown to act in distinct signaling pathways including those involving nuclear receptors, transforming growth factor beta, and tumor suppressors. SKI inhibits transforming growth factor-beta (TGF-beta) signaling through interaction with Smad proteins. SKI represses Smad-mediated transcriptional activation, probably through its action as a transcriptional co-repressor. SKI also inhibits TGF-beta-induced downregulation of genes such as c-myc.
Function:
May play a role in terminal differentiation of skeletal muscle cells but not in the determination of cells to the myogenic lineage. Functions as a repressor of TGF-beta signaling.
Subunit:
Interacts with SMAD2, SMAD3 and SMAD4. Interacts with HIPK2. Part of a complex with HIPK2 and SMAD1/2/3. Interacts with PRDM16 and SMAD3; the interaction with PRDM16 promotes the recruitment SMAD3-HDAC1 complex on the promoter of TGF-beta target genes.
Subcellular Location:
Nucleus.
Similarity:
Belongs to the SKI family.
Database links:
Entrez Gene: 6497 Human
Entrez Gene: 20481 Mouse
Omim: 164780 Human
SwissProt: P49140 Chicken
SwissProt: P12755 Human
SwissProt: Q60698 Mouse
Unigene: 656507 Human
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
SKI又称SKI、SKV，经研究发现SKI蛋白是刺激和诱发肿瘤生长导致癌症的关键蛋白质之一，SKI蛋白主要通过阻止TGF-β蛋白发挥作用,当TGF-β蛋白的信号传导被SKI蛋白阻断后，细胞就可能加速增值、生长，最终导致癌症发生。
有研究表明：c-ski可调节多种核因子的转录活性,参与神经系统发育、造血细胞的增殖和分化、肿瘤发生、组织再生等多种生理病理过程，更详细的作用机制还在进一步研究之中。
|
|
