双向电泳(twodimensionalelectrophoresis,2DE)6

我们本次实验使用的是银染。银染的方法种类很多,目前有文献报道的就有100多种。但是其准确的染色机制还不是特别的清楚。大致的原理是银离子在碱性pH环境下被还原成金属银,沉淀在蛋白质的表面上而显色。 由于银染的灵敏度很高,可染出胶上低于1 ng/蛋白质点,故广泛的用在2D凝胶分析上。待找到自己感兴趣的蛋白质点后,再通过考染富集该目的点,然后做进一步的肽段指纹图谱分析(PMF)或序列测定。随着质谱技术的不断完善和发展,对银染后的f mol级的蛋白质点直接测定已非难事。2.[操作步骤]♥ 固定1) 每条胶用150 mL固定液( 50% 甲醇 和 5% 乙酸)固定20 min。2) 150 mL 50% 甲醇冲洗10 min,3) 去离子水冲洗10min。♥ 敏化4) 150 mL 0.02%硫代硫酸钠敏化1 min。5) 超纯水漂洗2次,每次1min。♥ 银染6) 将胶条浸入 150mL 0.1%硝酸银和 0.08% 甲醛 ......阅读全文

常用电泳法

1、醋酸纤维素薄膜电泳(电泳法测定)醋酸纤维素是提纤维素的羟基乙酰化形成的纤维素醋酸酯。由该物质制成的薄膜称为醋酸纤维素薄膜。电泳时经过膜的预处理、加样、电泳、染色、脱色与透明即可得到满意的分离效果。此电泳特点是分离速度快、电泳时间短、样品用量少。因此特别适合于病理情况下微量异常蛋白的检测。2、纸电

常用电泳法

1、醋酸纤维素薄膜电泳(电泳法测定)醋酸纤维素是提纤维素的羟基乙酰化形成的纤维素醋酸酯。由该物质制成的薄膜称为醋酸纤维素薄膜。电泳时经过膜的预处理、加样、电泳、染色、脱色与透明即可得到满意的分离效果。此电泳特点是分离速度快、电泳时间短、样品用量少。因此特别适合于病理情况下微量异常蛋白的检测。2、纸电

常用电泳法

 1、醋酸纤维素薄膜电泳(电泳法测定)醋酸纤维素是提纤维素的羟基乙酰化形成的纤维素醋酸酯。由该物质制成的薄膜称为醋酸纤维素薄膜。电泳时经过膜的预处理、加样、电泳、染色、脱色与透明即可得到满意的分离效果。此电泳特点是分离速度快、电泳时间短、样品用量少。因此特别适合于病理情况下微量异常蛋白的检测。2、纸

Ingel-digestion-of-proteins-for-peptide-fingerprint-mapping

Polyacrylamide gel electrophoresis is a widely used technique to separate proteins from biological samples. Moreover, the development of two-dimension

peptide-fingerprint-mapping

Polyacrylamide gel electrophoresis is a widely used technique to separate proteins from biological samples. Moreover, the development of two-dimension

ZOOM®-IPGRunner™系统:简化的双向电泳(2D-gel-eletrophoresis)

摘要双向电泳(Two-dimensional(2D) gel electrophoresis)是一项基于蛋白的两种不同特性:电荷和质量来分离蛋白的技术。首先基于蛋白固有电荷,通过等电聚焦(isoelectric focusing IEF)进行第一向蛋白分离,然后根据蛋白的质量,在第二向中通过SDS-

RNA-gel-electrophoresis

实验概要RNA gel electrophoresis主要试剂DEPC H2ODEPC 0.1% (v/v)q.s. de-ioinized H2O37ºC x1 hr, or r.t. overnightAutoclave.(NaOAc, EDTA and ethidium bromide sol

RNA-gel-electrophoresis

MaterialsDEPC H2ODEPC 0.1% (v/v)q.s. de-ioinized H2O37ºC x1 hr, or r.t. overnightAutoclave.(NaOAc, EDTA and ethidium bromide solutions should also be

Gel-Electrophoresis-of-DNA

What is Electrophoresis?Electrophoresis is a technique used in the laboratory that results in the separation of charged molecules. In this CyberLab we

Agarose-Gel-Electrophoresis

实验概要Separating nucleic acid fragments by agarose gel electrophoresis.实验原理 Agarose  gel electrophoresis remains the most widely used technique for  sep

Pulse-Field-Electrophoresis

Manipulating and analyzing DNA are fundamentals in the field of molecular biology. Indeed, separating complex mixtures of DNA into different sized fra

Agarose-gel-electrophoresis

General ProcedureCast a gelPlace it in gel box in running bufferLoad samplesRun the gelImage the gelCasting Gels0.7% agarose gel with 1kbp ladder in U

双向电泳

实验概要本实验介绍了双向电泳技术,先进行等电聚焦电泳(按照pI分离),然后再进行SDS-PAGE(按照分子大小),经染色得到二维分布的蛋白质图。实验原理双向凝胶电泳的原理是第一向基于蛋白质的等电点不同用等电聚焦分离,第二向则按分子量的不同用SDS-PAGE分离,把复杂蛋白混合物中的蛋白质在二维平面上

双向电泳操作步骤——双向电泳操作步骤

实验方法原理双向电泳(two-dimensional electrophoresis)是等电聚焦电泳和SDS-PAGE的组合,即先进行等电聚焦电泳(按照pI分离),然后再进行SDS-PAGE(按照分子大小),经染色得到的电泳图是个二维分布的蛋白质图。实验材料细胞样品试剂、试剂盒ddH2O溴酚蓝指示剂

Delta2D-和-Proteomweaver:两款2DE分析工具的性能评估

电泳学杂志《Electrophoresis》于2010年31卷发表了一篇Decodon公司的2-DE(2D凝胶电泳)分析软件Delta2D (D2D)与另一款同类分析软件Proteomweaver (PW)性能比较的文章,题目是:《Delta2D 和 Proteomweaver:两款2-DE

小鼠心脏组织蛋白样品的蛋白质组学分析

实验概要本实验提供了一个心脏组织2-DE蛋白样品制备及检测的流程,为蛋白质双向电泳实验做好准备。实验步骤1. 心脏组织2-DE蛋白样品的制备    1) 将冷冻的小鼠心脏组织在液氮条件下研磨成粉末;    2) 然后加入5 x体积蛋白裂解液(7 M Urea, 2 M Thiourea, 40 mM

ELECTROPHORESIS-OF-DNA-IN-POLYACRYLAMIDE-GELS

ELECTROPHORESIS OF DNA IN POLYACRYLAMIDE GELSGel SizesSmall:             165 x 130 mmMedium:         165 x 200 mmLarge:            165 x 260 mm5% Anal

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

Standard-neutral-agarose-electrophoresis

Standard neutral agarose electrophoresisStandard agarose gels can be prepared using either TBE or TAE running buffers.You will need:Either 10 x TBE or

ELECTROPHORESIS-OF-DNA-IN-AGAROSE-GELS

ELECTROPHORESIS OF DNA IN AGAROSE GELSA). AGAROSE CONCENTRATIONS:       Use 0.8% agarose (w/v) for high molecular weight DNA fragments, and 1 - 1.2% f

Polyacrylamide-Gel-Electrophoresis-of-Oligonucleotides

1. Pour and polymerize a 20% polyacrylamide gel, no Urea.2. Remove clamps. Rinse with water. Remove comb. Rinse top of gel well.3. Insert comb teeth d

Agarose-Gel-Electrophoresis-of-DNA

1) Dissolve 1 g of agarose in 100 ml of 1X TAE or TBE buffer (gives a 1% gel). See note for making LMP agarose gel. 2) Cast the gel with the comb in p

Blue-Native-Gel-Electrophoresis

Blue Native Gel ElectrophoresisStock solutions49.5%T, 3%C Acrylamide 24 g acrylamide, 0.75 g bisacrylamide / 50 ml H2O Store at RT3 x Gel buffer 150 m

双向电泳实验

ISO-DALT 方法 IPG-DALT 方法             实验方法原理 双向电泳(two-dimensional electrophoresis)是等电聚焦电

双向电泳实验

试剂、试剂盒 尿素去污剂仪器、耗材 聚丙烯酰胺凝胶实验步骤 一、第一向1. 等电聚焦凝胶的准备双向电泳通常用聚丙烯酰胺凝胶作介质,但需含有 8 mol/L 尿素、0.5%~2% 非离子或两性离子去污剂。为了增加样品的可溶性,可加 0.5% CHAPS。在第一向电泳中,最重要的是用载体两性电解

Preparation-of-Stroma,-Thylakoid-Membrane,-and-Lumen-Fractions-from-...

Preparation of Stroma, Thylakoid Membrane, and Lumen Fractions from Arabidopsis thaliana Chloroplasts for Proteomic AnalysisFor many studies regarding

Protocol-for-Protein-Extraction-for-proteomics

Protocol for Protein Extraction10 % w/v TCA/ acetone/ 0.07 % v/v -MercaptoethanolPlant cells are rich in compounds that interfere with the 2DE separat

SDS-Gel-Electrophoresis-of-Tubulin\MAPs

MaterialsStock Acrylamide: (30%T:0.8%C)30% by weight of acrylamide0.8% by weight of N,N'-bis-methylene acrylamideSeparation Gel (Final Concentrati

High-Resolution-Agarose-Gel-Electrophoresis

实验概要Agarose gel  electrophoresis remains the most widely used technique for separating  nucleic acid fragments due to its ease of use, non-toxicity, a

Lipoprotein-Analysis-Week-2:-Electrophoresis

Lipoprotein Analysis  Week 2: Electrophoresis IntroductionSDS polyacrylamide gel electrophoresis (SDS PAGE) will be used to assess the purification pr