在westernblot中loadingbuffer的作用
1、指示剂,方便观察电泳进行的程度;2、密度大,携带你的样本沉到孔的底部;3、保持蛋白线性及携带过量负电荷的状态。 除此之外,里面最重要的是还有巯基乙醇还原剂来让蛋白质充分变性,同时保护-sh基团。......阅读全文
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
UV-CrossLinking-an...-(二)
实验步骤1. UV cross-linking of tissue culture cells 1) Remove media and add ice-cold PBS to cells (e.g. use cells grown in a 10 cm plate for three ex
Alkaline-agarose-gel-electrophoresis
Alkaline agarose gel electrophoresis (Sambrook et al., 1989)Alkaline agarose gels can be used to determine the size and quality of first and second st
病毒基因组DNA/RNA提取试剂盒使用说明
病毒基因组DNA/RNA提取试剂盒一、简介病毒总核酸提取试剂盒适合于从血清、血浆、组织匀浆等样品中提取病毒总核酸。试剂盒基于硅胶柱纯化技术,提取过程中无需使用有毒的酚氯仿抽提,也无需进行耗时的醇类沉淀。该产品已经成功地提取了乙肝A/C、丙肝、以及诺如病毒标准品等的核酸。获得的DNA/RNA可直接用于
血基因组DNA提取实验
实验方法原理 本试剂盒采用特殊的细胞裂解和蛋白去除液(包括蛋白酶K 裂解)从抗凝全血中得到基因组DNA。适用于从冻全血、血浆、血清、骨髓、其他体液、淋巴细胞、培养细胞、病毒和线粒体中提取DNA。实验材料 抗凝全血试剂、试剂盒 血基因组DNA 试剂盒仪器、耗材 96孔深孔板96圆孔板96孔DNA制备板
Stripping-Western-Blots
1) After ECL development, wash membrane once for 10min with PBST.2) Incubate the membrane in stripping buffer (see below) in a heat-sealed plastic bag
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
Isolation-Of-PCR-Products
实验概要Rapid and efficient purification of PCR products from salts, primers, dNTPs, and other non-nucleic acid reagents.实验原理The ChargeSwitch® TechnologyT
ImmunohistochemistyFluorescence-Protocol1
MaterialsCytokine-specific Primary Antibodiesunlabeled or biotinylated antigen-affinity purified polyclonal antibodies (R&D Systems ''AF'&
Staining-Procedure-for-Flow-Cytometric-Detection-of-Human-Cyclins
Staining Procedure for Flow Cytometric Detection of Human CyclinsThis is a standard protocol used at Pharmingen for Quality Control testing of the ant
动物组织基因组DNA提取试剂盒使用说明(一)
动物组织基因组DNA提取试剂盒一、简介动物组织基因组DNA提取试剂盒(DePure Tissue DNA Kit)适用于动物组织、培养细胞、抗凝血液、体液、分泌液等生物样品的DNA提取。试剂盒基于硅胶柱纯化技术,提取过程中无需使用有毒的酚氯仿抽提,也无需进行耗时的醇类沉淀,整个提取过程只需30分
流式细胞术,怎么处理样本?
流式细胞术(Flow Cytometry,FCM)能够快速测定细胞悬液中单个细胞的生物学性质,并可以对特定的细胞进行分选收集。广泛用于细胞生物学,免疫学,遗传学,基础医学等领域。接下来的 Protocol 中以小鼠的淋巴细胞为例进行细胞表面和胞内染色。一. 试剂准备Wash Buffer:PBS+1
Immunoprecipitation
实验概要In the IP method, the protein from the cell or tissue homogenate is precipitated in an appropriate lysis buffer by means of an immune complex
Bacic-Immunoprecipitation
实验概要 Immunoprecipitation (IP) is one of the most widely used immunochemical techniques. Immunoprecipitation followed by SDS-PAGE and immunoblotting,
E.Z.N.A.®-Protocol-for-Tissue
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
白细胞介素8(IL-8)检测实验
实验方法原理 采用两株识别不同表位的抗IL-8单克隆抗体,其中一株(4D7)作为包被抗体,以识别和结合待检标本中的IL-8,另一株作为酶标抗体,与结合于包被抗体的IL-8的另一个表位结合并催化底物显色。实验材料 抗体标准品ABTS试剂、试剂盒 缓冲液PBS仪器、耗材 ELISA板实验步骤 1. 包
FlagHA-double-tag-IP
实验概要Isolate the unknown protein that could interact with bait from cell lysate, for potential Mass spectrometry.主要试剂50mM Tris, pH8.020 mM glycerol b-p
DNA凝胶回收试剂盒使用方法
1.在琼脂糖凝胶-EB电泳后,在紫外灯上小心的把所需的DNA片段切下,尽量去除多余的凝胶并尽量少带电泳缓冲液,称重,装入1.5 ml离心管。2. 按照凝胶的重量近似的估计其体积,假设其密度为1g/ml,凝胶的体积可按如下方法计算:若凝胶薄片的重量为0.2 g,则其体积为0.2 ml。3. 在上述离心
Stripping-for-reprobing-western-blots
实验概要Stripping is the term used to describe the removal of primary and secondary antibodies from a western blot membrane. Stripping is useful when on
亲和层析法(aflinity-chromatography)纯化蛋白质
若表现蛋白质上含有一段六个His 的片段,而亲和吸着剂胶体上接有镍离子,此蛋白质会专一性地结合到吸着胶体;洗去杂质后可用imidazole 溶离纯质蛋白质(Pharmacia 操作手册, Affinity Chromatography)。一、仪器设备:1.亲和层析管柱 (Bio-Rad 731-15
Stripping-for-reprobing-western-blots
实验概要Stripping is the term used to describe the removal of primary and secondary antibodies from a western blot membrane. Stripping is useful when on
Dynabeads®-CoImmunoprecipitation-Kit
实验概要The Dynabeads® and buffers provided in this kit will enable you to a) covalently immobilize antibodies of your choice onto the surface of Dynab
Dynabeads®-CoImmunoprecipitation-Kit
实验概要The Dynabeads® and buffers provided in this kit will enable you to a) covalently immobilize antibodies of your choice onto the surface of Dynab
PCR产物的直接纯化原理、材料与方法
一.原理PCR产物一般都含有过量的引物、Taq DNA酶及dNTP,这些成分的存在将直接影响到后续的酶切、双脱氧PCR测序反应等过程,因此有必要除去。目前核酸纯化的方法有很多,商用化试剂盒的出现使得DNA的纯化过程变得更加简便快捷。本实验中,Buffer PCR-A促使大于100bp的DNA
Magnetic-Depletion-of-SSEA4+-Undifferentiated-Embryonic-Stem-Cells
实验概要Human embryonic stem cells can be differentiated into neural-, mesenchymal and hematopoetic stem cells. This product is intended for the magneti
PCR产物的直接纯化原理、材料与方法
一.原理PCR产物一般都含有过量的引物、Taq DNA酶及dNTP,这些成分的存在将直接影响到后续的酶切、双脱氧PCR测序反应等过程,因此有必要除去。目前核酸纯化的方法有很多,商用化试剂盒的出现使得DNA的纯化过程变得更加简便快捷。本实验中,Buffer PCR-A促使大于100bp的DNA片断选择
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
EMSA凝胶迁移-(Electrophoretic-mobility-shift-assay)实验
实验原理凝胶迁移或电泳迁移率实验(EMSA)是一种研究DNA结合蛋白和其相关的DNA结合序列相互作用的技术,可用于定性和定量分析。这一技术最初用于研究DNA结合蛋白,目前已用于研究RNA结合蛋白和特定的RNA序列的相互作用。通常将纯化的蛋白和细胞粗提液和32P同位素标记的DNA或RNA探针一同保温,
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
常用试剂配制-5
Sodium citrate (MW 294.10)0.09 MDissolve 2.65 grams of sodium citrate to a final concentration of 100 ml with water.Sodium citrate/formaldehyde (for s