浅述蛋白质分离纯化的新技术 摘 要: 本文主要介绍了浊点萃取法、置换色谱法、亲和层析法、亲和色谱法、凝胶电泳、双水相萃取等蛋白质的最新分离纯化技术,综和近年来国内外的一些研究结果,结合实际应用的例子,分析了各种分离纯化方法的优点,同时指出其不足之处。文章最后展望了蛋白质分离纯化技术的发展趋势。 关 键 词: 分离纯化 蛋白质 进展 生物技术的发展非常迅速,基因工程、蛋白质工程、发酵工程等生物技术, ...
蛋白质浓缩技术是免疫学中常用的手段,现介绍几种常用的浓缩技术。 (一)透析袋浓缩法 利用透析袋浓缩蛋白质溶液是应用最广的一种。将要浓缩的蛋白溶液放入透析袋(无透析袋可用玻璃纸代替),结扎,把高分子(6 000-12 000)聚合物如聚乙二醇(碳蜡)、聚乙烯吡咯、烷酮等或蔗糖撒在透析袋外即可。也可将吸水剂配成30%-40%浓度的溶液,将装有蛋白液的透析袋放入即可。吸水剂用过后,可放入温箱中烘干或自然 ...
Solutions Elution Buffer 50 mM Tris 7.5 5 ml 1M Tris pH 7.5 0.1% SDS 0.1 g SDS 0.1 mg/ml BSA 1.0 mg BSA 0.25 mM EDTA 50 ml 0.5M EDTA 2.5% glycerol 2.5 ml glycerol up to 100 ml with Q For every 10 ml a ...
目前常用的离子交换纤维素列于下表 DEAE - 纤维素 形状 长度 (微米) ...
Summary WCE Extracts are prepared from strain SHY282 (TFC4-Flag-EE (HpaI)).TFIIIC complex is first purified by flag affinity: TFC4 contains a single copy of the flag epitope.The flag purified TFIIIC i ...
Before trying this methodtry rapid protein prep which involves boiling yeast in SDS PAGE buffer 1.Grow 100 ml yeast to A600 ~1.0.If the yeast are overgrownuse proportionally less cells for the prep. 2 ...
Contributor: Suprya Jayadev Date: April 111996 1)Weigh out the appropriate amount of DEAE sephadex and place in a 15 ml conical tube. 2)Wash resin three to four times with zenopure water.Mix gel with ...
This procedure is used to break cells that contain a protein to be purified.This procedure is valid only for the use on Appling's lab sonicatior. PREPARATION 1.Place your sample in a 15ml elongated p ...
Fusion Protein Isolation 融合蛋白分离纯化 Peter Novick LabDepartment of Cell Biology Yale University School of Medicine http://info.med.yale.edu/cellbio/Novick/Second/Protocols/Fusion.pdf 1.Start a 5 ml overn ...
关于离子交换层析实验的介绍,对于常用到的层析介质的一些基本技术数据罗列如下: 离子交换介质名称 最高载量 ...
TGEK Base 50 mM Tris 10% vol Glycerol 1 mM EDTA 100 mM KCl (add for std lysis buffer): PMSF Benzamidine Leupeptin Aprotinin 0.5% NP40 (add for solubilization buffer) 1% NP40 0.1% Triton X100 0.1% SDS ...
CATHY'S NO BOIL YEAST EXTRACTS 1.Cells to mid log/ need ~ 5OD.Spin down and wash w/ 1ml H2O 2.Transfer to 1.5ml round bottom screw cap tube 3.add 200μl SDS sample buffer+ (5% BME50mM NaF1mM PMSF)-a ...
To be done the day before: 1.Put meat grinder and accessories in the cold room. 2.Put 6 one-liter centrifuge bottles in the cold room. 3.Put 14 to 16 500 ml Beckman polycarb centrifuge bottles with li ...
Column Buffers: CREB Steven FinkbeinerDepartments of Neurology and PhysiologyUCSF http://gweb1.ucsf.edu/labs/finkbeiner/Protocol/protocol_list/CREB_column_purification.shtml Bases Buffer is Buffer C ...
Inoculate 2ml of 5ml o/n culture of either p3133 (empty vector pET11a)or p3134 (dnEBNA-1/Soft)in E.coli BL21 LysS per 0.5L LB+ ampicillin (grow two 0.5L cultures of each) Incubate ~2hrs 37℃250rpm unti ...
摘要: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条件是使之具有差异,利用一种同时多种性质差异,在兼顾收率和纯度的情况下,选择蛋白质提纯的方法。 关键词:蛋白质分离纯化 前言 蛋白质在组织或细胞中一般都是以复杂的混合物形式存在,每种类型的细胞都含有成千种不同的蛋白质。蛋白质的分离和提纯工作是一项艰巨而繁重的任务, ...
Affinity Column Preparation 亲和层析柱制备 Peter Novick LabDepartment of Cell Biology Yale University School of Medicine http://info.med.yale.edu/cellbio/Novick/Second/Protocols/Affinity.pdf 1.Prepare 1 ml ...
GST fusion protein purification GST融合蛋白纯化 John MundyInstitute of Molecular BiologyCopenhagenDenmark http://www.arabidopsis.org/info/Protocols_Mundy2.jsp#gst 1)grow 20ml cells O/N37℃ dilute 50X into pr ...
一、植物组织蛋白质提取方法 1、根据样品重量(1g样品加入3.5ml提取液,可根据材料不同适当加入),准备提取液放在冰上。 2、把样品放在研钵中用液氮研磨,研磨后加入提取液中在冰上静置(3-4小时)。 3、用离心机离心8000rpm40min4℃或11100rpm20min4℃ 4、提取上清液,样品制备完成。 蛋白质提取液:300ml 1、1Mtris-HCl(pH8)45ml 2、甘油(Gly ...
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) 2g IPTG 溶解入10ml 水,过滤除菌,分装,-20℃保存。u Lysis bu ...