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The COP9 signalosome subunit 6 (CSN6): a potential oncogene

机译:COP9信号体亚基6(CSN6):潜在的致癌基因

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CSN6 is one subunit of the constitutive photomorphogenesis 9 (COP9) signalosome (CSN), which is an evolutionarily conserved multiprotein complex found in plants and animals and originally described as a repressor of light-dependent growth and transcription in Arabidopsis. CSN is homologous to the 19S lid subcomplex of the 26S proteasome, thus it has been postulated to be a regulator of the ubiquitin-proteasome pathway. In mammalian cells, it consists of eight subunits (CSN1-CSN8). Among the CSN subunits, CSN5 and CSN6 are the only two that each contains an MPN (Mpr1p and Pad1p N-terminal) domain. The deneddylating activity of an MPN domain toward cullin-RING ubiquitin ligases (CRL) may coordinate CRL-mediated ubiquitination activity. More and more studies about CSN6 are emerging, and its overexpression is found in many types of cancers. Evidence has shown that CSN6 is a molecule platform between protein degradation and signal transduction. Here, we provide a summary of human CSN6, especially its roles in cancer, hoping that it can lay the groundwork for cancer prevention or therapy.
机译:CSN6是组成型光形态发生9(COP9)信号小体(CSN)的一个亚基,CSN6是在植物和动物中发现的一种进化保守的多蛋白复合物,最初被描述为拟南芥中光依赖性生长和转录的阻遏物。 CSN与26S蛋白酶体的19S盖亚复合体同源,因此,它被认为是泛素-蛋白酶体途径的调节剂。在哺乳动物细胞中,它由八个亚基(CSN1-CSN8)组成。在CSN子单元中,CSN5和CSN6是仅有的两个,每个都包含MPN(Mpr1p和Pad1p N端)域。 MPN域对cullin-ring泛素连接酶(CRL)的树突化活性可能会协调CRL介导的泛素化活性。关于CSN6的越来越多的研究正在涌现,并且在许多类型的癌症中都发现了它的过度表达。有证据表明,CSN6是蛋白质降解和信号转导之间的分子平台。在这里,我们提供了人类CSN6的摘要,特别是其在癌症中的作用,希望它可以为癌症预防或治疗奠定基础。

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