Overview:
HIPK2 is a conserved serine/threonine nuclear kinase that interacts with homeodomain transcription factors. HIPK2 enhances expression of p53 target genes that resulting in growth arrest and the enhancement of UV-induced apoptosis that could be inhibited by antisense to HIPK2 (1). HIPK2 as a target for MDM2 mediated ubiquitin-dependent degradation that only occurred in growth-arresting conditions when MDM2 was efficiently induced by p53 (2). The knockdown of HIPK2 using small interfering RNA reduced p53 binding and activation of p53R2 that resulting in impaired UV-induced DNA repair.
Gene Aliases:
Stank; 1110014O20Rik; B230339E18Rik
Genbank Number:
BC031904
References:
1. Hofmann, T. G. et.al: Regulation of p53 activity by its interaction with homeodomain-interacting protein kinase-2. Nature Cell Biol. 4: 1-10, 2002.2. Rinaldo, C. et.al: MDM2-regulated degradation of HIPK2 prevents p53Ser46 phosphorylation and DNA damage-induced apoptosis. Molec. Cell 25: 739-750, 2007.
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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。

