返回搜索

Stabilization of p53

Reactome ID: R-HSA-69541

中文名称

p53 稳定化

通路描述

后续研究指出,ATM 磷酸化 Ser-15,而 Ser-15 的磷酸化在 IR 处理的细胞中迅速诱导,且该响应依赖于 ATM(Canman 等,1998; Banin 等,1998 和 Khanna 等,1998)。ATM 还通过激活其他丝氨酸/苏氨酸激酶来调节 p53 在其他位点的磷酸化,特别是 Ser-20,以应对 IR(Chehab 等,2000; Shieh 等,2000; Hirao 等 2000)。p53 在 Ser-20 处的磷酸化会干扰 p53-MDM2 相互作用。MDM2 由 p53 转录激活,是 p53 的负调控因子,将其靶向降解(Haupt 等,1997; Kubbutat 等,1997)。此外,MDM2 的修饰也影响 p53 的稳定化(Maya 等,2001)。
英文描述
Stabilization of p53 Later studies pin-pointed that a single serine (Ser-15) was phosphorylated by ATM and phosphorylation of Ser-15 was rapidly-induced in IR-treated cells and this response was ATM-dependent (Canman et al, 1998; Banin et al, 1998 and Khanna et al, 1998). ATM also regulates the phosphorylation of p53 at other sites, especially Ser-20, by activating other serine/threonine kinases in response to IR (Chehab et al, 2000; Shieh et al, 2000; Hirao et al 2000). Phosphorylation of p53 at Ser-20 interferes with p53-MDM2 interaction. MDM2 is transcriptionally activated by p53 and is a negative regulator of p53 that targets it for degradation (Haupt et al, 1997; Kubbutat et al, 1997). In addition modification of MDM2 by ATM also affects p53 stabilization (Maya et al, 2001).

所含基因

10 个基因