摘要:OverviewMost RNA extractions procedures yield RNA, with minimal or no contamination with DNA, that is suitable for applications such as northern blot, constructions of cDNA libraries or microarray hyb[阅读全文:]
摘要:Reagents1 U/ul DNase I from Epicentre Technologies10X DNase I buffer (200 mM Tris, pH 8.4, 20 mM MgCl2, 500 mM KCl)For 1ml:200 mM Tris, pH 8.4200 ul 1M Tris, pH 8.4500 ul 1M KCl20 ul 1 M MgCl2280 ul D[阅读全文:]
摘要:A protocol / method / schedule /procedure for extraction / isolation of both DNA and RNA from the same material typically plant leaf / leaves1) Take one medium sized leaf or half a large leaf (5 to 20[阅读全文:]
摘要:采用Promega公司的PolyATract® 26reg;mRNA Isolation System III。使用该试剂盒,mRNA产量极低,因此下述方法是以Promega公司试剂盒操作手册为基础,并采用储昭晖硕士(作物遗传改良国家重点实验室植物分子生物学水稻[阅读全文:]
摘要:为了获得高质量的真核细胞mRNA, 必须使用RNA酶的抑制剂或采用下述的破碎细胞和灭活RNA酶同步进行的方法,最大限度地降低细胞破碎过程中所释放的RNA酶的活性。同时,避免偶然引入实验室内其他潜在的痕量RNA酶也很重要。下[阅读全文:]
摘要:mRNA的分离方法较多,其中以寡聚(dT)-纤维素柱层析法最为有效,已成为常规方法。此法利用mRNA 3‘末端含有Poly(A+)的特点,在RNA流经寡聚(dT)纤维素柱时,在高盐缓冲液的作用下,mRNA被特异地结合在柱上,当逐渐降低盐[阅读全文:]
摘要:由于mRNA末端含有多poly(A)+,当总RNA流径oligo(dT)纤维素时,在高盐缓冲液作用下,mRNA被特异的吸附在oligo(dT)纤维素柱上,在低盐浓度或蒸馏水中,mRNA可被洗下,经过两次oligo(dT) 纤维素柱,可得到较纯的mRNA。实验步骤:[阅读全文:]
摘要:一、材料水稻叶片或小鼠肝组织。二、设备研钵,冷冻台式高速离心机,低温冰箱,冷冻真空干燥器,紫外检测仪,电泳仪,电泳槽。三、试剂1、无RNA酶灭菌水:用将高温烘烤的玻璃瓶(180℃ 2小时)装蒸馏水,然后加入0.01%的DEPC(体积/体[阅读全文:]
摘要:Preparation of CellsPrepare or collect between 2x107 cells for each mRNA prep (will yield about 10-20μg of mRNA). If PBMCs from a whole blood sample are to be used, the sample should be prepared wi[阅读全文:]