Sin3: master scaffold and transcriptional corepressor.

Sin3: master scaffold and transcriptional corepressor.
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DOI:
10.1016/j.bbagrm.2009.05.007
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发表时间:
2009-06
期刊:
Biochimica et biophysica acta
影响因子:
--
通讯作者:
Urrutia R
Urrutia R
中科院分区:
其他
文献类型:
--
作者:
Grzenda A;Lomberk G;Zhang JS;Urrutia R

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Sin 3在二十多年前作为芽殖酵母中转录的负调节因子被分离。随后的研究已经确定该蛋白作为主转录支架和辅阻遏物,能够通过相关的组蛋白脱乙酰酶(HDAC)进行转录沉默。核心Sin 3-HDAC复合物与多种阻遏物和辅阻遏物相互作用,在调节染色质结构和转录方面提供灵活性和扩展的特异性。因此,Sin 3/HDAC复合物参与一系列生物和细胞过程,包括细胞周期进展、基因组稳定性、胚胎发育和稳态。这种复合物的异常募集或其酶活性的改变与肿瘤转化有关。
Sin3 was isolated over two decades ago as a negative regulator of transcription in budding yeast. Subsequent research has established the protein as a master transcriptional scaffold and corepressor capable of transcriptional silencing via associated histone deacetylases (HDACs). The core Sin3-HDAC complex interacts with a wide variety of repressors and corepressors, providing flexibility and expanded specificity in modulating chromatin structure and transcription. As a result, the Sin3/HDAC complex is involved in an array of biological and cellular processes, including cell cycle progression, genomic stability, embryonic development, and homeostasis. Abnormal recruitment of this complex or alteration of its enzymatic activity has been implicated in neoplastic transformation.
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