troponin蛋白纯化Proteinpurification:troponins
Overview TROPONINS The calcium-dependent regulatory protein complex located on the thin actin filaments of muscle comprises of TnC (17.8 kDa), TnI (20.8 kDa), and TnT (30.5 kDa). These proteins are involved in the key regulatory mechanism for muscle contration. Material Source: skeletal muscle ether powder Equipment: • centrifuge• Cibaron Blue-sephacryl co......阅读全文
troponin蛋白纯化－Protein－purification:－troponins
Overview TROPONINS The calcium-dependent regulatory protein complex located on the thin actin filaments of muscle comprises of TnC (17.8 kDa), TnI (2
Protein－A－Purification－of－Antibody
1. Reagents(1) Affi-gel Protein-A Agarose (BioRad #153-6153)(2) MAPS II Binding Buffer (BioRad # 153-6161)(3) 0.314 g/ml diH2O(4) MAPS II Elution Buff
Protein－purification;－actin
Protein purification; actin Overview ACTINThe most abundant muscle and non-muscle cytoskeletal protein. MW 42 kDa, 374/375 amino acids; various
Protein－Expression－and－Purification－Protocol
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
Protein－G－Purification－of－Antibodies
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
Antibody－Purification－using－Protein－A,－Protein－G,－or－Protein－L－Agarose
实验概要This protocol is designed as a quick purification method for antibodies from mammalian sera, ascites, and cell culture supernatants主要试剂 Protein
Antibody－Purification－using－Protein－A,－Protein－G,－or－Protein－L－Agarose
实验概要This protocol is designed as a quick purification method for antibodies from mammalian sera, ascites, and cell culture supernatants. It should
Purification－of－Antiserum－or－Ascites－by－Protein－A/G－Chromatography
1、Required Materials and Equipment(1) Protein A or G agarose gel column (10 ml or 5 ml of packed beads; see guidelines below for choice of protein A o
Purification－of－Kar3－Motor－Domain－Protein
Purification of Kar3 Motor Domain ProteinMaterialsInduced cells (2 - 5 g pellet of pET/Kar3 in BL31(DE3)pLysS host cells) (See note #1)HEM buffer =10
蛋白质纯化(protein－purification)实用技术2
7．密度多数蛋白质的密度在1.3~1.4g/cm3之间，分级分离蛋白质时一般不常用此性质，不过对含有大量磷酸盐或脂质的蛋白质与一般蛋白质在密度上明显不同，可用密度梯度法离心与大部分蛋白质分离。8．基因工程构建的纯化标记通过改变cDNA在被表达的蛋白的氨基端或羧基端加入少许几个额外氨基酸，这个加入的标
蛋白质纯化(protein－purification)实用技术3
10．非极性基团之间作用力溶质分子中的非极性基团与非极性固定相间的相互作用力（非选择性分散力或伦敦力）大小与溶质分子极性基团与流动力相中极性分子在相反方向上相互作用力的差异进行分离。因其流动相中的置换剂是极性小于水的有机溶剂（如甲醇、乙腈、四氢呋喃等），这些有机溶剂可能使许多蛋白质分子产生不可逆的变
蛋白质纯化(protein－purification)实用技术1
研究的最后还是要看基因表达产物,无论是用于检测还是用于棉衣保护,都需要将表达出的蛋白质分离和纯化,然而蛋白质性质各异,故纯化方法不同,现共享一些基本的纯化方法,以飨读者:蛋白质的一级、二级、三级和四级结构决定了它的物理、化学、生物化学、物理化学和生物学性质，综述了不同蛋白质之间的性质存在差异或者改变
GST融合蛋白（GST－fusion－protein－purification）的表达与纯化
原理GST 纯化系统是利用GST （glutathione-S-transferase ）融合蛋白与固定的谷胱甘肽（GSH）通过硫键共价亲和，通过GSH交换洗脱的原理来进行纯化 。1ml树脂大约可结合5-8 mg融合蛋白，并可反复使用数次。试剂u IPTG（异丙基硫代-β-D-半乳糖苷） 2
Doubletag在蛋白纯化(Protein－Purification)过程中的应用
Protein表达是一个非常复杂的过程，因此很难预测表达的蛋白是否是可溶性的、包涵体形式还是部分降解的。为了预防各种可能的困难条件，在重组蛋白上导入两种Tag可以提供获得高纯度均质蛋白的灵活性。 蛋白含有两种不同亲和纯化Tag的重要原因： 纯化全长的蛋白 获得最高纯化的蛋白 适合变性
Antibody－Purification
This protocol includes an ammonium sulfate cut, affigel blue chromatography and affinity chromatography.1. Solutions(1) Affigel Blue Prewash0.1 M acet
Purification－of－mAb－(IgG)
1. Materials(1) Antibody 7E3, 2L sup grown in flasks, frozen and thawed overnight.(2) BioRad Affi-Gel Protein A MAPS II Buffers cat. #1530-6160 ($161.
Purification－of－Demethylated－Sphingomyelin
I. Lower, chloroform phase:1) Dry on rotovapor system with house vacuum lines. It is not necessary to dry sample completely, but sufficiently to yield
Purification－of－GST－Fused－Proteins
Day 1Set up an overnight culture in 100 ml LMM broth or 100 ml terrific broth containing 100ul 100 mg/mlAmpDay 2Add 40-50 ml o/n culture to 1 lt terri
Column－Purification－of－Demethylated－Sphingomyelin
Packing column:1) To 20 g of 100-200 mesh Bio-Sil A silica gel add 80 mls of chloroform.2) Place a small portion of glass wool at the base of the colu
Antigen－Affinity－Purification－of－Antibodies
实验概要To acquire purified antibodies (This method typically yields >95% pure specific antibodies ).实验原理 Cytokines are signaling proteins necessary for
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
Radioiodination－of－protein
Radioiodination (by Jun Takagi,6/16/2000)Purpose and backgroundsPrinciple of radioiodinationAddition of oxidizing reagents (such as chloramine-T or pe
蛋白质提取和纯化
蛋白质提取和纯化（主要内容如下）Protein Extraction Protein PurificationProtein PrecipitationColumn PreparatioinQ & A Posted in the Method ForumProtein ExtractionWhole
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
DNA－Purification－from－Agarose－Gels
1. Separate DNA fragments in an agarose gel cast with 0.5 mg/mL Ethidium bromide. Locate bands with a hand-held long-wave UV lamp.2. Slice the gel wit
Purification－of－human－mononuclear－cells－and－neutrophils
PurposeMaterials10ml 6% dextran + 7ml citrate/citric acidDextran: T500 --> 6g+100ml PBSCitrate solution: 25g Na Citrate + 8g citric acid + 500 ml PBS4
抗体纯化
Antibody PurificatioinPurification of IgG Using Protein A- or Protein G-Agarose (KPL) Purifying Antibodies (Perkin-Elmer)Precipitation MethodsProtein
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－Assay－(Spectrophotometer)
Protein Assay (Spectrophotometer)Use BSA (bovine serum albumin) 1mg/ml stock solution (1ml Eppendorf tubes) for standard curve.Place 0, 2, 5, 10, 15,