
Overview:
USP28 (ubiquitin carboxyl-terminal hydrolase 28) is a deubiquitinase belonging to the family of deubiquitinating enzymes (DUBs) and plays a role in the DNA damage pathway by specifically deubiquitinating proteins of the pathway such as CLSPN. USP2 deubiquitinates ZNF304, inhibiting its degradation and leading to the activated KRAS-mediated promoter hypermethylation and transcriptional silencing of tumor suppressor genes (TSGs) in various colorectal cancers (CRC) cells (1). USP28 counteracts the activity of E3 ligases, antagonizes FBW7 and a component of the SCF-type E3 ubiquitin ligase that targets key transcriptional factors to ubiquitin-directed proteasome degradation, thus stabilizing substrates such as oncogenic c-MYC (2). This may lead to enhanced proliferation, carcinogenesis, and metastasis.
Gene Aliases:
KIAA1515
Genbank Number:
NM_020886
References:
1. Serra, Ryan W et al: A KRAS-directed transcriptional silencing pathway that mediates the CpG island methylator phenotype. eLife 3: e02313, 2014.2. Wang, X. et al:Targeting deubiquitinase USP28 for cancer therapy. Cell Death & Disease 9: 186, 2018.
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最近遇到了实验上的大问题,就是用一步法做RNA的荧光定量PCR时,发现低浓度的做不出来,而DNA是可以的,想请问各位在一步法PCR中有没有什么高见,就是逆转录的Buffer有没有什么需要注意的地方!就是在逆转录酶的最适Buffer和Taq酶的最适Buffer中寻找一个最适的Buffer!
DNA拓扑异构酶Ⅱ与抗肿瘤药物靶点的研究进展.doc(59.5k)
B、酶细胞产能细胞内(外)起作用消化酶细胞外起作用B错误;
C、酶同需要适条件同胃蛋白酶与胰蛋白酶所需PH同C错误;
D、葡萄糖细胞质基质解丙酮酸需要酶催化D确.
故选:D.
我是新手。我要开始做实验了,但一开始就碰到了个很大的问题。
我想买个能利用哺乳动物细胞RNA聚合酶将DNA转录成RNA的的质粒,向好几家公司打了电话,但都没有我想要的东西。
没有这个东西,我的实验就只能是蓝图了。哪位战友有办法的,能不能帮帮我?
不胜感激。
请规范发贴,求助贴请在标题前加【求助】,谢谢您的合作。——by草根

