AssayfortheMicrococcalNuclease
Method: Essentially that described by Heins et al. (1966) based upon the release of acid soluble oligonucleotides following nuclease digestion of DNA. One unit corresponds to a change in optical density of 1.0 at 260 nm at 37°C and pH 8.0 under the specified conditions.Reagents0.1 M Sodium borate, pH 8.80.01 M Calcium chlorideDNA, 2.5 mg/ml: prepare by dissolving 25 mg Worthington Calf Thymus DNA in 10 ml 0.01 M NaCl......阅读全文
Assay－for－the－Micrococcal－Nuclease
Method: Essentially that described by Heins et al. (1966) based upon the release of acid soluble oligonucleotides following nuclease digestion of DNA.
微球菌核酸酶的基本信息
中文名微球菌核酸酶外文名Micrococcal Nuclease微球菌核酸酶(Micrococcal Nuclease) 是只降解核小体连接区DNA的核酸酶，由于核小体处的DNA被组蛋白1保护而不被降解。只降解核小体连接区DNA的核酸酶，由于核小体处的DNA被组蛋白1保护而不被降解。
染色质免疫沉淀（ChIP）技术的难点及应用1
序言随着人类基因组测序工作的基本完成，功能基因组学的研究逐渐成为研究的热点。而基因表达的调控又是功能基因组学的一个重要研究领域。研究某个蛋白因子的调控功能，可以通过对蛋白活性（激活或抑制其活性），蛋白数量（过表达Overexpression或基因缺陷型Knockout）, 以及蛋白功能（功能缺陷
微球菌核酸酶的基本信息
微球菌核酸酶(Micrococcal Nuclease) 是只降解核小体连接区DNA的核酸酶，由于核小体处的DNA被组蛋白1保护而不被降解。
核小体的构造
核小体的构造可用图表示：每一个核小体结合的DNA总量为200bp左右，一般在150~250变化范围（micrococcal nuclease）轻微消解染色质而得知的。连接两个核小体的连接DNA (linker DNA) 是最容易受到这种酶的作用，因此微球菌核酸酶在连接DNA处被切断，此时每个重复单位
Motility－Assay
DescriptionVarious phenotypic characteristics are requiredfor a cancer cell to successfully complete the metastaticcascade. Among these, acquisition o
Bradford－Assay
The bradford dye-binding assay is a colorimetric assay for measuring total protein concentration. It involves the binding of Coomassie Brilliant blue
DGK－Assay
Buffers:- 2X buffer10 ml 0.5 M imidazol, pH 6.60.21 g LiCl1.25 ml 1 M MgCl21.0 ml 0.1 M EGTA, pH 6.6--> Bring volume up to 50 ml with distilled water.
Phosphate－Assay
1. Make standards using sodium phosphate at the following uM concentrations: 0, 2, 5, 7, 10, 20, 40, 60, and 80. Use the screw top glass tubes.2. Dry
Protease－assay
实验概要 In certain fruits, such as pineapples and mangoes, the flesh contains protein-digesting enzymes (proteases). These may play a part in
Chemotaxis－Assay
PurposeThe purpose of a chemotaxis assay is to determine whether your protein or small molecule of interest has chemotactic activity on a specific cel
TUNEL－assay
PROTOCOL:•Deparaffinize and rehydrate slides:3 x 3´ Xylene3 x 2´ 100% ethanol1 x 2´ 95%, 80%, 70% ethanol (each)1 x 5´ 1x PBS•Microwave antigen retrie
Aspartate－Assay
实验概要The Aspartate Assay Kit provides a simple, convenient assay to measure aspartate in a variety of samples. In the assay, aspartate is converted
Polygalacturonase－assay
This enzyme is famous for being involved in the development of the GMO tomatoes (more information from the link at the foot of this page). The cells o
Pectinase－assay
Pectinases are actually a mixture of enzymes, which, along with others such as cellulase, are widely used in the fruit juice industry where they are w
Protease－assay
In certain fruits, such as pineapples and mangoes, the flesh contains protein-digesting enzymes (proteases). These may play a part in helping to softe
MTT－Assay
This procedure is for cells in 96 well plates, if larger plates are used then adjust volumes accordingly.1 Make a solution of 5mg/ml MTT dissolved in
Bradford－Assay
Bradford AssayThe bradford dye-binding assay is a colorimetric assay for measuring total protein concentration. It involves the binding of Coomassie B
Native－chromatin－immunoprecipitation－protocol
实验概要The method is a native chromatin immunoprecipitation protocol.主要试剂1. 10 x TBS 0.1 M Tris-HCl (pH 7.5) 1.5 M NaCl 30 mM CaCl2 20 mM MgCl2 50 mM Na
自然染色质免疫沉淀实验设计
1. The preparation of native chromatin from cultured human cells1.1.Cultured cells (e.g. HL-60 or lymphoblastoids) are grown to a density of approxima
Native－chromatin－immunoprecipitation－protocol
实验概要Native chromatin immunoprecipitation to query specific chromatin states of individual genes. 主要试剂10 x TBS 0.1 M Tris-HCl (pH 7.5) 1.5 M NaCl 30 mM
核小体模型的建立基础和研究
人们接着用化学交联、高盐分离组蛋白，以及X衍射等方法进一步研究组蛋白多聚体的结构、排列以及怎样和DNA结合的，从而建立了核小体模型。1984年Klug和Butler进行了修正。核小体的构造可用图表示：每一个核小体结合的DNA总量为200bp左右，一般在150~250变化范围（micrococcal
核小体的原理
人们接着用化学交联、高盐分离组蛋白，以及X衍射等方法进一步研究组蛋白多聚体的结构、排列以及怎样和DNA结合的，从而建立了核小体模型。1984年Klug和Butler进行了修正。核小体的构造可用图表示：每一个核小体结合的DNA总量为200bp左右，一般在150~250变化范围（micrococcal
核小体的基本原理
人们接着用化学交联、高盐分离组蛋白，以及X衍射等方法进一步研究组蛋白多聚体的结构、排列以及怎样和DNA结合的，从而建立了核小体模型。1984年Klug和Butler进行了修正。核小体的构造可用图表示：每一个核小体结合的DNA总量为200bp左右，一般在150~250变化范围（micrococcal
核小体的模型形成原理
人们接着用化学交联、高盐分离组蛋白，以及X衍射等方法进一步研究组蛋白多聚体的结构、排列以及怎样和DNA结合的，从而建立了核小体模型。1984年Klug和Butler进行了修正。核小体的构造可用图表示：每一个核小体结合的DNA总量为200bp左右，一般在150~250变化范围（micrococcal
核小体的原理简介
人们接着用化学交联、高盐分离组蛋白，以及X衍射等方法进一步研究组蛋白多聚体的结构、排列以及怎样和DNA结合的，从而建立了核小体模型。1984年Klug和Butler进行了修正。核小体的构造可用图表示：每一个核小体结合的DNA总量为200bp左右，一般在150~250变化范围（micrococca
In－vitro－Sphingomyelinase－Assay
Reagents:Lysis buffer25 mM Tris-HCl, pH 7.45 mM EDTA1 mM ATP20 µg/ml CLAP1 mM PMSFBuffer A10 mM MgCl20.2 M Tris-HCl, pH 7.40.2 % Triton X-100Buffer B0
Glycolipid－Binding－Assay
Glycolipid Binding AssaySource: Contributed by Pingsunjim, Paller’s LabAbstract: This protocol can be used for the detection of glycolipids binding to
Soft－Agar－Assay
Soft Agar AssayMake 0.6% media-agar mix for the bottom layer. To make 0.6% agar mix the following components (this makes 200 ml):2X DME 100 mlI
Leaf－GUS－Assay
实验概要a protocol for Leaf GUS Assay This protocol is for small samples (usually single leaf from 21DAI plants), scale up for larger samplesAs there are