ExtractionofChromatin
Dr. William H. Heidcamp, Biology Department, Gustavus Adolphus College Exercise 10.3 - Extraction of ChromatinLEVEL IIMaterials Bovine or porcine brain0.25 M Sucrose containing 0.0033 M calcium acetate2.0 M Sucrose with 0.0033 M calcium acetate0.075 M NaCl with 0.024 M EDTA, pH 8.0Tris-HCl buffer, pH 8.0 with the following molarities0.05 M, 0.002 M, 0.0004 MTCA (Trichloroacetic acid)Tissue homogenizer......阅读全文
Extraction－of－25NT－RNA
实验概要This method is use to extract short RNAs from plant tissue. Some of the variables (e.g. centrifugation speeds×, precipitation times and vo
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
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
Lipid－analysis：EXTRACTION－OF－LIPIDS－FROM－LIPOPHORIN
Lipid analysisEXTRACTION OF LIPIDS FROM LIPOPHORIN Since lipids are hydrophobic, they are better soluble in organic solvents than in water. Because th
Automated－Extraction－－Normalized－DNA－Buccal－Kit
实验概要This section provides a general protocol for automated isolation of genomic DNA from human buccal cell swabs in a 96-well format using the Charg
DNA－EXTRACTION－FROM－MICRODISSECTED－PARAFFIN－SECTIONS
This is a four day procedure so it's best to start on Monday or Tuesday.CASE SELECTION:H&E stained thin sections are first reviewed by a pathologi
Vacuum/Spin－Protocol－for－Tissue－DNA－Extraction
实验概要The E.Z.N.A.® Tissue DNA Kit provides a rapid and easy method for the isolation of genomic DNA for consistent PCR and Southern analysis. Up to 3
A－novel－method－of－growing－fungi－for－DNA－extraction
Preparation of fungi for DNA extraction typically involves growing cultures in liquid culture in Erlenmeyer flasks, Roux bottles or even microfuge tub
Protein－extraction－from－whole－tissues－for－IEF
Modified from that of Jay Thelen - University of Missouri-ColumbiaPhenol extraction followed by methanolic ammonium acetate precipitation - an effecti
DNA－Extraction－from－Frozen－Tissue－Sections
Tissue collection, storage, microdissection, sectioning: See separate protocol.Tissue handling: Note that all fresh tissue should be handled as BioSaf
Total－Protein－Extraction－with－TCAAcetone
We describe a procedure allowing extraction of total proteins that performs efficiently with a large variety of plant tissues, based on simultaneo
蛋白质抽取(protein－extraction)
蛋白质在细菌中表现后，以反复的冷冻-解冻方法打破细胞，再用硫酸铵把蛋白质沉淀下来，此步骤可以去除大部份核酸、多醣、脂质等杂物。仪器用具：恒温震荡培养箱37℃；高速冷冻离心机及离心管 （使用20,000 rpm离心陀）使用高速离心机要注意： 离心机及离心陀的温度要预冷完全，相对位置的两只离心管要平衡好
ChIP－using－plant－samples
实验概要 The immunoprecipitation (IP) of cross-linked chromatin with antibodies specific for certain histone modifications (chromatin immunoprecipitati
染色质免疫沉淀法（Chromatin－immunoprecitation，ChIP）
染色质免疫沉淀法（Chromatin immunoprecitation，ChIP）是研究体内DNA与蛋白质相互作用的重要工具。它可以灵敏地检测目标蛋白与特异DNA片段的结合情况，还可以用来研究组蛋白与基因表达的关系。核小体组蛋白可以发生多种翻译后的共价修饰，如乙酰化、甲基化、磷酸化、泛素化等，这些
An－Ultrafast－method－of－DNA－extraction－from－Neurospora
We have found that the DNA extraction procedure of Metzenberg and Baitch (Neurospora Newsl. 28:20)/Stevens and Metzenberg (Neurospora Newsl. 29:27) wh
Extraction－of－DNA－From－Plants－Using－Plant－DNAzol®－Reagent
实验概要Plant DNAzol® is an extra-strength-DNAzol® reagent (patent pending) specifically formulated for the isolation of genomic DNA from plants. The Plan
Chromosomal－DNA－Extraction－from－Grampositive－Bacteria
Chromosomal DNA Extraction from Gram-positive BacteriaThis procedure was originally developed for Listeria monocytogenes but has worked well with othe
Fast－and－reliable－miniprep－RNA－extraction－from－Neurospora－crassa
We have developed a method for isolating high quality total RNA from N. crassa mycelia that reliably yields large quantities. It is possible to extrac
RNA－Extraction－(mini－prep):Trizol法实验原理和步骤
RNA的制备与分析对于了解基因在转录水平上的表达与调控和cDNA的合成都是必须的，RNA的纯度和完整性对于Northern blot，RT-PCR 和cDNA文库的构建等分子生物学实验都至关重要。RNA分离的方法很多，其中最关键的因素是尽量减少RNA酶的污染 实验原理： Trizol 试剂
蛋白质提取与制备(Protein－Extraction－and－Preparation)1
蛋白质提取与制备蛋白质种类很多，性质上的差异很大，既或是同类蛋白质，因选用材料不同，使用方法差别也很大，且又处于不同的体系中，因此不可能有一个固定的程序适用各类蛋白质的分离。但多数分离工作中的关键部分基本手段还是共同的，大部分蛋白质均可溶于水、稀盐、稀酸或稀碱溶液中，少数与脂类结合的蛋白质溶于乙醇、
蛋白质提取与制备(Protein－Extraction－and－Preparation)6
PH 值：与沉淀蛋白质或酶原理相同，结晶的溶液PH 值一般选择在被结晶的蛋白质或酶的等电点附近，以利于晶体的析出。温度：除少数情况外，通常选择低温条件进行。低温条件对蛋白质和酶不仅溶解度低且不易变性。在中性盐溶液中结晶时，温度可在0℃至室温范围内选择，在有机溶剂中结晶一般要求温度较低。晶种：不易结晶
蛋白质提取与制备(Protein－Extraction－and－Preparation)4
蛋白质提取液中，除包含所需要的蛋白质（或酶）外，还含有其它蛋白质、多糖、脂类、核酸及肽类等杂质。除去的方法有：1）核酸沉淀法该法可用核酸沉淀剂和氯化锰、硫酸鱼精蛋白或链霉素等。必要时也可用脱氧核糖核酸酶除去核酸。即在粗匀浆中加入少量DNase,于4℃保温30～60min，可使DNA 降解为足够小的碎
蛋白质提取与制备(Protein－Extraction－and－Preparation)5
确定沉淀蛋白质所需硫酸铵浓度的方法将少量样品冷却到0～5℃，然后搅拌加入固体硫酸铵粉末，见蛋白质产生沉淀时，离心除去沉淀，分析上清液确定所要蛋白质的浓度，如它仍在溶液中则弃去沉淀，再加更多的硫酸铵于上清液中，直到产生蛋白质沉淀时止。以所要提取的蛋白质在溶液中的浓度对硫酸铵浓度作图，得沉淀曲线，找出蛋
蛋白质提取与制备(Protein－Extraction－and－Preparation)3
水溶液提取：大部分蛋白质均溶于水、稀盐、稀碱或稀酸溶液中。因此蛋白质的提取一般以水为主。稀盐溶液和缓冲溶液对蛋白质稳定性好、溶度大，也是提取蛋白质的最常用溶剂。盐溶液提取：以盐溶液及缓冲液提取蛋白质进常注意下面几个因素。盐浓度等渗盐溶液尤以0.02～0.05mol/L 磷酸盐缓冲液和碳酸盐缓冲液常用
蛋白质提取与制备(Protein－Extraction－and－Preparation)2
三、蛋白质提取与制备具体操作方法1、原料的选择早年为了研究的方便，尽量寻找含某种蛋白质丰富的器官从中提取蛋白质。但至目前经常遇到的多是含量低的器官或组织且量也很小，如下丘脑、松果体、细胞膜或内膜等原材料，因而对提取要求更复杂一些。原料的选择主要依据实验目的定。从工业生产角度考虑，注意选含量高、来源丰
粪便基因组DNA提取试剂盒（Stool－DNA－Extraction－Kit）使用说明
粪便基因组DNA提取试剂盒（Stool DNA Extraction Kit）存储室温(15℃-25℃) 干燥保存，有效期12个月，2℃-8℃保存时间更长。【注】试剂盒开封后溶液A、B 、C 、D 需在2-8℃保存。货号&规格YJ0219-50 | 50TYJ0219-100 | 100T产品组分试
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
DNA抽提
DNA抽提（主要内容如下）· Working with DNA· DNA Extraction from Bacteria and Other Organisms· DNA Extraction from Cell and Tissue· Mitochondria DNA Isola
细菌的核酸抽提
DNA Extraction· DNA Extraction from Bacteria (Julie B. Wolf,UMBC)Phenol/chloroform method· DNA Extraction From Bacteria (Triton Method
AKAP95－role－in－mitosis－and－chromosome－dynamics
The chromatin packaging of the genome is dynamic, changing with the cell cycle and with transcriptional regulation. During mitosis, chromatin is conde