CyanogenBromidedigestionofprotein
1. Proteins are TCA precipitated and washed with acetone, then dried.2. The CNBr should be brought to room temperature in the hood and used ONLY in the hood. Extremely toxic!3. Dissolve a small amount of CNBr in 70% TFA, the exact amount is not critical. One or two crystals should be fine, although weighing this reagent is NOT recommended. Place the utensil used in dilute bleach to neutralize the residual CNBr.4. Red......阅读全文
BIURET－PROTEIN－ASSAY
BIURET PROTEIN ASSAYMATERIALSBiuret ReagentBovine serum albumin (BSA)Spectrophotometer and tubesPROCEDUREPrepare standard dilutions of BSA containing
Bradford－protein－assay
Bradford protein assayConsiderations for useThe Bradford assay is very fast and uses about the same amount of protein as the Lowry assay. It is fairly
Eukaryotic－protein－translation
The scanning translation initiation model suggests that 40S ribosomal subunit preloaded with factors bind to the 5’ end of the mRNA near the cap. The
Protein－arginine－methylation
Typical modification sites: RGG box or RXR sequence motifs R-arginine, G-glycine,X-any aminoacid.Enzymes catalysing protein arginine methylation: PRMT
蛋白复合体直接酶消化法
Direct Enzymatic Digestion of Protein ComplexesSherry Niessen, Ian McLeod and John R. Yates IIIDepartment of Cell Biology, The Scripps Research Instit
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快速酶解试剂盒——更快、更准确地进行蛋白质表征和研究轻松简单• 流程简单，一步完成样品处理• 变性还原烷基化酶解全流程只需半小时结果可靠• 降低样品处理过程引入的蛋白修饰• 提高蛋白酶解重现性• 增强数据可信度“One-Step Digestion”快速酶解试
重组DNA的分离、克隆与测序实验手册7
III. Methods for DNA isolationA. Large scale double-stranded DNA isolationThe method used for the isolation of large scale cosmid and plasmid DNA is a
General－Cloning－Protocols
Large Scale Preps: (See Large scale plsasmid prep protocol for more details)Cultures: Inoculate a 5 mL LB/Amp (50 - 100 µg/mL) culture in early a.m. w
DNA的酶学操作
DNA的酶学操作DNA Modifying Enzymes (Michael Blaber)Introduction to bacterial restriction/modification system. It provides very useful background knowledge
Promega在ASMS－2009上推出鉴定蛋白质的新途径
Promega利用ProteaseMAX表面活性剂推出了一项创新简化的胶内酶切技术。该项技术给分析人员提供了以下几点好处： 节省时间：整个胶内酶切过程只需一个小时的时间 省去了萃取步骤：蛋白质分解和肽段回收一步完成。 更多的数据：该分解技术保持了原有肽段的信息。
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
DNA转化实验指导2
1B. Cloning 1. A caveat on dephosphorylation: the most common reason for failure to obtain colonies is a result of adding too much BAP or CIP to
Basic－Protein－Chemistry－Techniques
Coomassie Blue Stain: (for gels) 1) Combine 225 ml Methanol with 225 ml ddH2O. 2) Add 0.5 grams of Coomassie Blue. 3) Just before use, add 50 ml acet
Biorad－Protein－Assay:－Bradford
Biorad Protein Assay: BradfordStandards: 1 mg/ml BSA stock- dilute 1:10 to get 0.1 mg/ml BSAAdd To get H-2O20 µl 2 µg/ml 780 µl40 µl 4 µg/ml 760 µl60
Basic－Protein－Chemistry－Techniques
实验概要Basic Protein Chemistry Techniques实验步骤Coomassie Blue Stain: (for gels) 1) Combine 225 ml Methanol with 225 ml ddH2O. 2) Add 0.5 grams of Coomassi
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Ubiquitination is one of the most important posttranslational modifications in all eukaryote organisms. Ubiquitin-activating enzyme (E1), ubiquiti
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1. use 2 mg of antibody per ml wet beads (use appropriate antibody/protein A or G combination).2. mix antibodies with beads and bind at room temperatu
Bradford－Protein－Concentration－Assay
Bradford Protein Concentration Assayversion 01/07/2001Abbreviations:mcg = microgramsmcL = microlitersBSA = bovine serum albuminO.D. = optical densityd
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Nuclear pore complexes (NPCs) are large proteinaceous assemblies that provide the only known portals for exchanging macromolecules between the nucleus
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Protocol for Protein Extraction10 % w/v TCA/ acetone/ 0.07 % v/v -MercaptoethanolPlant cells are rich in compounds that interfere with the 2DE separat
Protein－Immunolocalization－in－Maize－Tissues
The analysis of gene expression at transcript and at protein level is of outstanding importance in plant developmental biology. Proteins can be loc
Angiotensin－Protein－Kinase－Assay
James Hardwick's angiotensin assay protocolThis specific procedure was developed to assay the activity of the Lck kinase expressed from a retrovir
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1. Reagent and Materials(1) Hi-Trap Protein G Column (Pharmacia Biotech #17-0404-01)(2) 20 mM Sodium Phosphate Buffer, pH 7.01.084 g NaH2PO4, anhydrou
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Step 1: Transform appropriate DNA plasmid into BL21(DE3) E. coli cells. These cells must be competent. (Protocol for how to make competent cells.)a) T
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OUTLINEWestern blot is a wide used technique to identify a target protein/s for the certain antibody.PROTOCOLPrepare platelets.Lyse washed platelets (
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
peptide－fingerprint－mapping
Polyacrylamide gel electrophoresis is a widely used technique to separate proteins from biological samples. Moreover, the development of two-dimension
重组DNA的分离、克隆与测序实验手册2
C. Restriction digestionRestriction enzyme digestions are performed by incubating double-stranded DNA molecules with an appropriate amount of restrict
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A. Phenol extraction of DNA samplesPhenol extraction is a common technique used to purify a DNA sample (1). Typically, an equal volume of TE-saturated
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COMPARISION OF DIFFERENT PROTEIN DETERMINATION METHODSCompanyMethodDetection RangeApplications -CompatibilityAssay protocolPrecautions-InterferencesA