
Overview:
NEK7 is a member of the NIMA family of serine/threonine kinases. In contrast to the other documented NIMA-related kinases, NEK7 harbor its catalytic domain in the C-terminus of the protein. Immunofluorescence studies suggest that NEK7 is cytoplasmic and located on chromosome 1 (1). The major protein kinase that is active on the p70 S6 kinase hydrophobic regulatory site (FXXFS/TF/Y) Thr412, was purified from rat liver and identified as NEK7 (2). NEK7 kinase activity is rapidly and efficiently increased by serum deprivation, and may be regulated in a cell cycle-dependent manner.
Genbank Number:
NM_133494
References:
1. Kandli, M. et al: Isolation and characterization of two evolutionarily conserved murine kinases (Nek6 and nek7) related to the fungal mitotic regulator, NIMA. Genomics. 2000 Sep 1;68(2):187-96. 2. Belham, C. et al: Identification of the NIMA family kinases NEK6/7 as regulators of the p70 ribosomal S6 kinase. Curr Biol. 2001 Aug 7;11(15):1155-67.
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⒈通过嵌入DNA双链的碱基之间,形成稳定复合物,抑制DNA复制与RNA合成,从而阻碍快速生长的癌细胞的分裂。
⒉抑制拓扑异构酶II,影响DNA超螺旋转化成为松弛状态,从而阻碍DNA复制与转录。有研究显示拓扑异构酶II抑制剂(除蒽环类药物还包括依托泊苷等)能够阻止拓扑异构酶II的翻转,而这点对于它从它的核酸底物上脱离是必需的。这就意味着,拓扑异构酶II抑制剂使拓扑异构酶II的复合物在DNA链断裂之后才能更稳定,导致后者催化了DNA的破坏;同时,拓扑异构酶II抑制剂还能阻碍连接酶对DNA的修复。
⒊螯合铁离子后产生自由基从而破坏DNA、蛋白质及细胞膜结构。向左转|向右转
ResponseofskeletalmuscleRNApolymerasesIandIItotumourgrowth
BiochimicaetBiophysicaActa(BBA)-GeneStructureandExpression,Volume950,Issue3,7September1988,Pages296-302
GeorgeA.J.Goodlad,CatherineM.Clark
或者有高手知道怎么测也行
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!
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

