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POU5F1 (OCT4), SOX2, NANOG activate genes related to proliferation

Reactome ID: R-HSA-2892247

中文名称

mRNA 加帽

通路描述

目前研究的所有真核生物前体 mRNA 的 5'端均被转化为帽结构。帽结构被认为影响第一个内含子的剪接,并在细胞核内被'帽结合'蛋白 CBP80 和 CBP20 结合。帽对于翻译起始至关重要,它通过与 poly(A)尾结合蛋白相互作用,使 mRNA 环化以促进多次翻译。此外,帽对于 mRNA 稳定性也很重要,保护其免受 5'到 3'核酸酶降解,并对于 mRNA 出核至细胞质是必需的。加帽反应通常在新生转录本上迅速发生;在 RNA 聚合酶 II 仅合成少量核苷酸后,RNA 5'-三磷酸酶将新生转录本的 5'端从三磷酸转化为二磷酸,随后由 mRNA 鸟苷转移酶添加鸟苷一磷酸形成 5'-5'-三磷酸连接。该帽随后被 2'-O-甲基转移酶甲基化。
英文描述
POU5F1 (OCT4), SOX2, NANOG activate genes related to proliferation POU5F1 (OCT4), SOX2, and NANOG bind elements in the promoters of target genes. The target genes of each transcription factor overlap extensively: POU5F1, SOX2, and NANOG co-occupy at least 353 genes (Boyer et al. 2005). About half of POU5F1 targets also bind SOX2 and about 90% of these also bind NANOG (Boyer et al. 2005). Upon binding the transcription factors activate expression of one subset of target genes and repress another subset (Kim et al. 2006, Matoba et al. 2006, Player et al. 2006, Babaie et al. 2007). The targets listed in this module are those that have been described as composing activated genes in the core transcriptional network of pluripotent stem cells (Assou et al. 2007, Chavez et al. 2009, Jung et al. 2010). Inferences from mouse to human have been made with caution because of significant differences between the two species (Ginis et al. 2004).

所含基因

12 个基因