
【求助】P53与磷酸化P53的区别 - 丁香通研选
2015年8月20日 · p53的Ser392可以被CAK磷酸化,该位点磷酸化和p53的抑制生长功能及其DNA结合和转录激活有关。 简而言之,野生型P53可以帮助细胞抵御肿瘤发生,而磷酸化的P53则可能充当肿瘤发生的帮凶。
p53基因 - 百度百科
P53 失活机理 是野生型P53以四聚体形式与特异位点结合,反式激活 下游 生长抑制 基因的表达,一系列的方式能使P53失活,在一些肿瘤中,单一或两个 P53位点的丧失降低四聚体浓度, 无义突变 造成P53翻译中断, C端 酸性结构域的丢失 影响四聚体形成;最常见的 ...
关于肿瘤克星——P53,这些你都知道吗? - 知乎专栏
转录因子P53在细胞周期中发挥着核心作用,并且可以说是最重要的肿瘤抑制因子之一。 在细胞受到DNA损伤或致癌压力等信号时,P53通过一系列磷酸化事件和其它后转录修饰(PTM)被激活,导致P53靶基因的表达,这些基因…
p53 Function and Dysfunction in Human Health and Diseases
The p53 protein is a sequence-specific DNA-binding transcription factor that, in response to stressful stimuli, regulates gene expression related to multiple cellular functions including, but not limited to, cell cycle arrest, cell apoptosis, cell growth, DNA repair, cell metabolism, and the immune response [1].
细胞凋亡信号转导的 p53 通路 | Thermo Fisher Scientific - CN
肿瘤蛋白 p53 是一种核转录因子,能够在响应遗传毒性或细胞应激时调节多种与细胞凋亡、生长停滞或衰老相关基因的表达。 p53 中有四个保守结构域:N 端结构域,负责转录激活;一个序列特异性的 DNA 结合结构域;一个位于 C 端附近的四聚化结构域;以及一个可直接与单链 DNA 相互作用的 C 端结构域。 p53 的半衰期较短,在未受应激的哺乳动物细胞中,通常通过连续泛素化以及随后被 26S 蛋白酶体降解维持在低水平。 未磷酸化的 p53 通过 MDM2(鼠双微体-2)泛素连 …
p53: updates on mechanisms, biology and therapy (I) - PMC
Genetic mutations that affect ribosomal function, DNA repair, and the control of mitosis through the centriole all activate p53, and this activation is critical for the observed developmental phenotypes, as many mutations are rescued by p53 deletion in the mouse.
p53的功能、结构和修饰| Abcam中文官网
TP53(编码 p53 的基因)突变是癌症中最常见的基因突变,在超过 50% 的肿瘤中丧失部分或全部功能 (Perri et al.,2016)。 p53 突变为肿瘤细胞提供了选择性优势,使其能够避开细胞周期检查点,避免凋亡和衰老,并在正常细胞无法增值的条件下增殖 (Pascual et al., 2019)。
Targeting p53 pathways: mechanisms, structures and advances in …
2023年3月1日 · Here, we provide a systematic review of the diverse molecular mechanisms of the p53 signaling pathway and how TP53 mutations impact tumor progression. We also discuss key structural features of...
p53: A tale of complexity and context - Cell Press
2024年3月28日 · We describe here the paradox of how, depending on its mutational status in cancer, p53 can be both a tumor suppressor and an apparent oncogene. The major challenge of translating the vast store of p53 knowledge into clinical practice is discussed as well. We start by recounting the story of how p53 came to be so renowned. 2
The p53 tumor suppressor protein - Genes and Disease - NCBI Bookshelf
The p53 gene like the Rb gene, is a tumor suppressor gene, i.e., its activity stops the formation of tumors. If a person inherits only one functional copy of the p53 gene from their parents, they are predisposed to cancer and usually develop several independent tumors in a variety of tissues in early adulthood.