RNaseinhibitorsandRNases
Question 1.What are the differences among RNase H, RNase A, RNase B and RNase C?2.In your cDNA kits, RNase H is added in the second strand reaction to produce more nicked RNA as primers for DNA synthesis. In this repect, would RNase out RNase inhibitor influence the function of RNase H, if it was added even before first stand synthesis? Answer 1. The main difference between all RNases are......阅读全文
用RNase－Ⅲ－消化长片断双链RNA制备siRNA的方法特点
其他制备siRNA的方法的缺陷是需要设计和检验多个siRNA序列以便找到一个有效的siRNA。而用这种方法——制备一份混合有各种siRNAs “混合鸡尾酒” 就可以避免这个缺陷。选择通常是200—1000碱基的靶mRNA模版，用体外转录的方法制备长片断双链dsRNA ，然后用RNase Ⅲ (or
Extraction－of－RNA－from－Fibrous－tissues
实验概要E.Z.N.A.™ MicroElute® Total RNA Kit provides a rapid and easy method for the isolation of up to 50 ug of total RNA from small amount of cultured
古老的RNase－III抗病毒防御系统有望引发RNA治疗变革
尽管人类主要依赖更加复杂的更加强大的抗病毒防御系统，但是早期的生命形式在十亿年前形成的让它们自己抵抗病毒感染的原始防御系统仍然能够在人细胞中发现到。如果科学家们能够设计出有益的病毒，让这些病毒利用这种古老的系统直接运送药物到患病组织中，那么这种系统尽管比较简单，但可能成为下一个精准医疗时代的基础
PURELAB－flex（配生物过滤器）可以清除内毒素、RNase、DNase和...
PURELAB flex（配生物过滤器）可以清除内毒素、RNase、DNase和细菌 内毒素内毒素是革兰氏阴性活菌外膜脱落的脂多糖。 细菌细胞死亡时释放出内毒素。内毒素与细胞相互作用，造成多种不利影响（参考文献1Dawson和参考文献2 Nagano）。 内毒素对试管内受精（参考文献3 Dumoul
UV－CrossLinking－an...－（一）
实验概要Interest in RNA-protein interactions is booming as we begin to appreciate the role of RNA, not just in well-established processes such as trans
RNA－extraction－using－trizol/tri
RNA extraction with TRIzol (Invitrogen product name) or the equivalent TRI (Sigma-Aldrich product name) is a common method of total RNA extraction fro
DEPC
Procurement100ml DEPC from Sigma (D5758) [1] - €233/$292 (as of 2009-01)100ml DEPC from MPI (150902) [2] - €313 (as of 2009-01)DEPC-treatment of solut
E.Z.N.A.®－Total－RNA－Midi－Kit－Protocol－DNase－I－digestion－Protocol
实验概要E.Z.N.A.® Total RNA Midiprep Kit provides a rapid and easy method for the isolation of up to 600 ug of total RNA from cultured eukaryotic cells,
RNA提取
RNA提取（主要内容如下）Tips for Handing RNA Total RNA IsolationmRNA IsolationrRNA IsolationOthersQ & A posted in the Method Forum Basic Procedures for Handing
E.Z.N.A.®－Total－RNA－Maxi－Kit－Protocol－for－Animal－Tissues
实验概要The E.Z.N.A.® Total RNA Maxi Kit uses HiBind® matrix spin-column technology to isolate up to 5 mg total cellular RNA from a variety of sources
ChIP－using－plant－samples
实验概要 The immunoprecipitation (IP) of cross-linked chromatin with antibodies specific for certain histone modifications (chromatin immunoprecipitati
RNA－FISH－on－cultured－cells－in－interphase
IntroductionFluorescence in situ hybridization (FISH) has become a widely used method in genome and molecular genetic studies. The technique is highly
Crosslinking－chromatin－immunoprecipitation－(XChIP)－protocol
实验概要ChIP is a powerful tool that allows the specific identification of proteins or histone modifications to regions of the genome. Chromatin is isol
核蛋白基因组指纹技术
Fine Mapping of Genomic Targets of Nuclear Proteins in Cultured CellsAchim Breiling and Valerio OrlandoDulbecco Telethon Institute, Institute of Genet
Extraction－of－RNA－from－Frozen－Sections
RNA Extraction from Frozen Tissue Sections Tissue Handling: Note that all unfixed human tissue should be handled as BioSafety Level 2 materials (wear
Life－Tech新一代miRNA功能研究工具介绍
新一代miRNA功能研究工具介绍 ――mirVana™ miRNA mimics 与 inhibitors Ambion(now part of Life Technologies)，是提供microRNA调控研究工具产品的第一家公司。从那时起，Ambion® miRNA m
RNA实验方法
Solublization of RNA in Formamidecontributed by James McCaughern-Carucci, Yale UniversityResuspending RNA in Formamide (as reported by Chomczynski et
RNA－Immunoprecipita...
实验概要Interest in RNA-protein interactions is booming as we begin to appreciate the role of RNA, not just in well-established processes such as tran
关于血管紧张素转化酶抑制剂的简介
血管紧张素转化酶抑制剂(ACEI)是一种抑制血管紧张素转化酶活性的化合物。血管紧张素转化酶催化血管紧张素I生成血管紧张素II，后者是强烈的血管收缩剂和肾上腺皮质类醛固酮释放的激活剂。 angiotensin converting enzyme inhibitors；ACE inhibitors
DNA编码化合物库，新药筛选划时代的变革
在药物发现过程中面对的主要挑战是在成本可控范围内，如何快速并且高质量地找到尽可能多的能够与靶点蛋白相结合的活性化合物。为了解决这个问题，我们不断完善并创新着筛选方法。例如在一些项目中我们通过使用高通量筛选来高效地发现Hits。但是由于化合物的容量、多样性及质量的限制，只有极少数的公司能够承受得起
Tips－and－hints－for－the－storage－of－antibodies
Storage of lyophilized antibodiesAll our products are shipped lyophilized (freeze-dried). Unlabeled antibodies are stable without loss of quality at a
Life－Tech推出新一代miRNA功能研究工具
Ambion(现在属于Life Technologies)，是提供microRNA调控研究工具产品的第一家公司。从那时起，Ambion® miRNA mimics与 inhibitors系列产品就成了人为调节miRNA表达水平的最常用研究工具。 如今，Life Technologies
Inhibition－of－Matrix－Metalloproteinases
Cellular transformation is accompanied by many cellular changes, including uncontrolled proliferation, loss of the differentiated cell morphology, and
Trypsinizing－cells
There are many procedures with which to trypsinize cells. All include washing the cell monolayer with TD, or in rare cases, with VE. This removes seru
酵母染色体沉淀分析方法
ABSTRACTThis protocol describes a method for the detection of proteins bound to specific regions of chromatin in yeast. There are many variations of t
PCR超净工作台应对经济发展新常态
PCR超净工作台应对经济发展新常态 PCR超净工作台为保护RNA或DNA样品在扩增实验操作中免受交叉污染或来自房间和操作员的污染而设计,PCR超净工作台配有一个风机和一个H14过滤器。 其工作原理同垂直层PCR超净工作台一样：室内空气经由H14过滤器被吹入柜内,避免任何室内的DNAs 或Rn
E.Z.N.A.®－Total－RNA－Midi－Kit－Protocol－for－Eukaryotic－Cells－and－Tissues
实验概要E.Z.N.A.® Total RNA Midiprep Kit provides a rapid and easy method for the isolation of up to 600 ug of total RNA from cultured eukaryotic cells,
荧光PCR法检测RNasin性能效果
实验目的：对RNasin性能效果进行检测及评估。 实验材料及设备： 模板RNA：大鼠肌肉组织RNA 引物：Rat β-acting：Forward CCCATCTATGAGGGTTACGC Reverse TTTAATGTCACGCACGATTTC RNase：50mg/ml（simgen）
荧光PCR法检测RNasin性能效果
实验目的：对RNasin性能效果进行检测及评估。实验材料及设备：模板RNA：大鼠肌肉组织RNA引物：Rat β-acting：Forward CCCATCTATGAGGGTTACGCReverse TTTAATGTCACGCACGATTTC RNase：50mg/ml（simgen）RNasin：4
cDNA－文库的构建（一）
实验材料 λ噬菌体臂大肠杆菌菌株用于λ噬菌体的包装抽提物试剂、试剂盒 放线菌素 D二硫苏糖醇EDTATris-ClMgCl2反转录酶RNase 抑制剂用于 cDNA 合成的寡核苷酸引物poly(A)+RNA[a-32P]dCTPEDTA乙醇(NH4)2SO4β-烟酰胺腺嘌呤二核苷酸T4