Acetoneprecipitationofprotein
This procedure is suitable for recovering proteins from most aqueous solvents and from SDS containing buffers. It is not recommended for proteins dissolved in urea or guanidine or for peptides.Protocol1. Cool the required volume of acetone to -20°C.2. Place protein sample in acetone-compatible tube, such as polypropylene and able to hold six times the sample. Screw cap tubes may help minimize sample losses.3. Add six......閱讀全文
Acetone－precipitation－of－protein
This procedure is suitable for recovering proteins from most aqueous solvents and from SDS containing buffers. It is not recommended for proteins diss
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
抗體純化
Antibody PurificatioinPurification of IgG Using Protein A- or Protein G-Agarose?(KPL)?Purifying Antibodies?(Perkin-Elmer)Precipitation MethodsProtein
蛋白質沉淀(Protein－Precipitation)濃縮方法原理及詳細解析1
在生化制備中，沉淀主要用于濃縮目的，或用于除去留在液相或沉淀在固相中的非必要成分。在生化制備中常用的有以下幾種沉淀方法和沉淀劑：1．鹽析法多用于各種蛋白質和酶的分離純化。2．有機溶劑沉淀法多用于生物小分子、多糖及核酸產品的分離純化，有時也用于蛋白質沉淀。3．等電點沉淀法用于氨基酸、蛋白質及其它兩性物
蛋白質沉淀(Protein－Precipitation)濃縮方法原理及詳細解析2
二．硫酸銨的使用硫酸銨中常含有少量的重金屬離子，對蛋白質巰基有敏感作用，使用前必須用H2S處理：將硫酸銨配成濃溶液，通入H2S 飽和，放置過夜，用濾紙除去重金屬離子，濃縮結晶，100℃烘干后使用。另外，高濃度的硫酸銨溶液一般呈酸性（PH=5.0左右），使用前也需要用氨水或硫酸調節至所需PH。硫酸
蛋白質沉淀(Protein－Precipitation)濃縮方法原理及詳細解析3
二．生成鹽復合物沉淀法1．金屬復合鹽法許多有機物質包括蛋白在內，在堿性溶液中帶負電荷，能與金屬離子形成沉淀。根據有機物與它們之間的作用機制，可分為羧酸、胺及雜環等含氮化合物類，如銅鋅鎘；親羧酸疏含氮化合物類，如概鎂鉛；親硫氫基化合物類，如汞銀鉛。蛋白質-金屬離子復合物的重要性質是它們的溶解度對溶液的
PEG－PRECIPITATION－OF－PCR－PRODUCTS
PEG PRECIPITATION OF PCR PRODUCTSThis protocol can be used instead of EXO/SAP for removing excess primers and nucleotides from PCR products before cyc
COMPARISION－OF－DIFFERENT－PROTEIN－DETERMINATION－METHODS
COMPARISION OF DIFFERENT PROTEIN DETERMINATION METHODSCompanyMethodDetection??RangeApplications?-CompatibilityAssay protocolPrecautions-InterferencesA
Protocol－for－Trichloroacetic－Acid－(TCA)－Precipitation
IntroductionThe efficiency of nucleotide incorporation in DNA/RNA polymerization reactions (e.g. transcription, reverse transcription, and DNA replica
Antibody－Purification－using－Protein－A,－Protein－G,－or－Protein－L－Agarose
實驗概要This protocol is designed as a quick purification method for antibodies from mammalian sera, ascites, and cell culture supernatants. It should
Antibody－Purification－using－Protein－A,－Protein－G,－or－Protein－L－Agarose
實驗概要This ?protocol is designed as a quick purification method for antibodies from ?mammalian sera, ascites, and cell culture supernatants主要試劑?Protein
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
Ethanol－precipitation－method－for－purifying－PCR－products
1. For each PCR reaction (50 μL) prepare a 1.5mL microcentrifuge tube containing the following:??????? - 5 μL of 3M sodium acetate (NaOAc), pH 4.6????
Ethanol－precipitation－method－for－purifying－PCR－products
1. For each PCR reaction (50 μL) prepare a 1.5mL microcentrifuge tube containing the following:??????? - 5 μL of 3M sodium acetate (NaOAc), pH 4.6????
沉淀反應技術(Precipitation－reaction－technique)
一、???? 概述?可溶性抗原（如細菌浸出液、含菌病料浸出液、血清以及其他來源的蛋白質、多糖質、類脂體等）與其相應的抗體相遇后，在電解質參與下，抗原抗體結合形成白色絮狀沉淀，出現白色沉淀線，此種現象稱為沉淀反應。沉淀反應中的抗原叫沉淀原（precipitinogen）,與沉淀原發生反應的抗體稱為沉淀
PIC－Crosslinking－and－Immune－Precipitation
References?Fishburn et. al., 2005, Molecular Cell, vol. 18 #3: Experimental Procedures pg. 376Immobilized Template assay (Hahn lab website)NotesDTT mu
Preparation－of－bOGDOPG－mixed－micelles
Materials:All glassware must be acid washed, rinsed thoroughly with water then rinsed with acetone and dried.Redistill acetone.Recrystallizing BOG:1)
Radioiodination－of－protein
Radioiodination (by Jun Takagi,6/16/2000)Purpose and backgroundsPrinciple of radioiodinationAddition of oxidizing reagents (such as chloramine-T or pe
Protein－Electrophoresis
DefinitionAmino acids, nucleotides, polypeptides, and other compounds in a colloidal state can be separated by the application of external voltages wh
Protein－Crystallization
Background:Proteins, like many molecules, can be prompted to form crystals when placed in the appropriate conditions. In order to crystallize a protei
小鼠丙酮檢測(acetone)ELISA試劑盒操作說明
我司ELISA試劑盒品質保證，質量優，價格實惠，是您生物實驗的首選，如有需要可與我司銷售人員聯系。本試劑僅供研究使用目的：本試劑盒用于測定小鼠血清，血漿及相關液體樣本中小鼠丙酮(acetone)含量。實驗原理：本試劑盒應用雙抗體夾心法測定標本中小鼠丙酮(acetone)水平。用純化的小鼠丙酮(ace
沉淀反應技術(Precipitation－reaction－technique)（2）
2．取試管5支（5mm×50mm）置于試管架上，編號。第1、2試管內加炭疽沉淀血清，第3、4試管內加正常血清，第5管內加待檢抗原，分別用毛細滴管加至4mm～5mm。3．第1、4、5試管輕輕疊加等量緩沖液，第2、3試管輕輕疊加等量待檢抗原。為防止上下兩界面破壞，可將小試管從試管架取出，微傾斜，沿試管壁
沉淀反應技術(Precipitation－reaction－technique)（1）
一、 概述可溶性抗原（如細菌浸出液、含菌病料浸出液、血清以及其他來源的蛋白質、多糖質、類脂體等）與其相應的抗體相遇后，在電解質參與下，抗原抗體結合形成白色絮狀沉淀，出現白色沉淀線，此種現象稱為沉淀反應。沉淀反應中的抗原叫沉淀原（precipitinogen）,與沉淀原發生反應的抗體稱為沉淀素（pre
The－Determination－of－Proteinprotein－Interactions－by－the－Matingbased－...
Dynamic and reversible protein–protein interactions have a pivotal function in all living cells. For instance, protein–protein interactions are in
Verification－of－In－...
實驗概要Environmental stresses often trigger rapid generation of reactive oxygen species (ROS) in plants. Excessive amount of ROS can cause damage to
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
LOWRY－PROTEIN－ASSAY
The Lowry procedure is one of the most venerable and widely-used protein assays, being first described in 1951 [Lowry et al.,?J. Biol. Chem. 193: 265-
Protein－Kinase－A－at－the－Centrosome
Protein kinase A regulatory subunit RIIalpha (PKA-RIIa) is tightly bound to centrosomal structures during interphase through interaction with the A-ki
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
BIURET－PROTEIN－ASSAY
BIURET PROTEIN ASSAYMATERIALSBiuret ReagentBovine serum albumin (BSA)Spectrophotometer and tubesPROCEDUREPrepare standard dilutions of BSA containing