Overview:
USP7 (ubiquitin carboxyl-terminal hydrolase 7) belongs to the peptidase C19 family and deubiquitinates FOXO4, p53, MDM2, and WASH proteins, and regulates their activities through counteracting ubiquitin ligase activity of proteins such as HDM2 and TRIM27. USP7 was found to contribute to the stabilization and trans-activation of herpesvirus 1 transcriptional protein by strongly interacting with ICP0, a regulatory protein that stimulates lytic infection and the reactivation of viral genome (1). High expression of USP7 was correlated with the proliferation, migration and invasion capacities of hepatocellular carcinoma, indicating that the enzyme may play a role in promoting tumour progression (2).
Gene Aliases:
HAUSP, TEF1
Genbank Number:
NM_003470
References:
1. Boutell, C. et al: Reciprocal activities between herpes simplex virus type 1 regulatory protein ICP0, a ubiquitin E3 ligase, and ubiquitin-specific protease USP7. Journal of virology 79(19), 12342-54, 2005.2. Wang, X. et al: Clinical Significance of Ubiquitin Specific Protease 7 (USP7) in Predicting Prognosis of Hepatocellular Carcinoma and its Functional Mechanisms. Medical science monitor:international medical journal of experimental and clinical research 24: 1742-1750, 2018
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我在做5RACE,选用TaKaRa公司的RNA反转录酶(RNaseH-),不知道这个酶好不好,有什么需要注意的。
没有序列识别的功能,他就是简单的催化相邻DNA链的5-P末端和3'-OH末端以磷酸二酯键结合的反应,需ATP作辅酶。 不仅可以催化粘性末端之间或平滑末端之间的DNA的连接,也催化DNA与RNA之间以及少数RNA之间的连接。
反转录酶(Reversetranscripatase)是以RNA为模板指导三磷酸脱氧核苷酸合成互补DNA(cDNA)的酶。哺乳类C型病毒的反转录酶和鼠类B型病毒的反转录酶都是一条多肽链。鸟类RNA病毒的反转录酶则由两上亚基结构。真核生物中也都分离出具有不同结构的反转录酶。

