ProteinA亲和层析的突破性创新(二)
纳微不仅是世界上为数不多能够大规模生产单分散硅胶色谱填料的公司,而且还能够大规模生产多样化规格(包括多种粒径孔径等)单分散聚合物色谱填料,并且纳微多年来始终坚持创新突破,借助单分散聚合物微球作为基质,开发了多种可用于生物大分子分离纯化的层析介质,其中单分散Protein A亲和层析介质UniMab®和NanoMab两大系列就是极具代表性的填料产品:它们能够很好地避免软胶基质亲和介质的不足之处,带来更佳的分析分离表现。UniMab®使用时反压低、化学稳定性好、耐碱性强;NanoMab是专为快速高效分析检测单克隆抗体及含有Fc片段的重组蛋白类大分子而设计。由于该产品具有高度粒径均一性,且孔穿透性好,机械强度高,因此具有动态载量高,流速快,洗脱集中,流动相消耗少等特点,同时辅以极具创新性的“等保留时间放大”理论,可在实际研发生产中大幅度提高抗体生产效率,降低生产成本,毕竟对于昂贵的亲和层析介质只有采用基于领先性技术生产的单分散......阅读全文
Protein-A亲和层析的突破性创新(二)
纳微不仅是世界上为数不多能够大规模生产单分散硅胶色谱填料的公司,而且还能够大规模生产多样化规格(包括多种粒径孔径等)单分散聚合物色谱填料,并且纳微多年来始终坚持创新突破,借助单分散聚合物微球作为基质,开发了多种可用于生物大分子分离纯化的层析介质,其中单分散Protein A亲和层析介质Uni
Protein-A亲和层析的突破性创新(一)
导读:近年来,抗体被越来越多地应用于疾病的治疗,已占据生物药品市场的40%以上,且还有不断上升的趋势,而单克隆抗体又是生物制药领域的热门品种,目前其销售额在生物药销售中占比已超过30%,可谓一枝独秀。另据Evaluate统计,到2020年过ZL保护期的生物药市场规模将达到约874亿美金,极具市场吸引
Protein-A--G亲和层析的原理
对于IgG的纯化,大部分情况下我们都会选择使用Protein A或Protein G进行亲和层析。因为它们对于IgG的Fc段具有特异性的亲和作用,而对于其他杂蛋白没有或者只有很弱的结合。通常,仅仅凭借Protein A或Protein G一步亲和层析就可使蛋白纯度达到≥90%。
解析速览Protein-A亲和抗体层析的突破性创新
导读:近期华人抗体协会发布一篇文章介绍到连续制造工艺被FDA推崇备至:连续制造工艺基于其稳定高效率的优势,已经在其它许多行业成为极其成功的生产模型。然而很长一段时间以来,制药行业以严格监管和法规要求过于保守而被行业所诟病,故多数仍以批次生产为主。近年来,随着业界对于产能效率和生产成本的不断重视,生物
重磅!纳微科技Protein-A-亲和层析介质新品发布
新春伊始,马力全开!纳微科技为您重磅推出Protein A 亲和层析介质新品,让您领略纳微新一代层析介质的超凡魅力! 纳微科研人员经过多年的积累,利用自主知识产权研发出新一代Protein A 亲和层析介质Uni®Mab系列。该亲和层析介质专为大规模抗体纯化而设计,是由高纯度的Protein
亲和层析实验:常规方法(二)
二、配基的选择选择合适的配基,需要对配基和靶分子之间的天然相互作用有一定的认知及理解。靶分子与配基的相互作用必须是特异性结合,并且在不同的结合和洗脱条件下均应该稳定。此外,制订亲和纯化的方案时,需着重考虑能否购买到商品化配基,还是需要从头研制配基和介质。后者的成功在很大程度上取决于对蛋白质结构和相互
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
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
金属螯合亲和层析实验(二)
实验材料蛋白质试剂、试剂盒GuMCAC-EDTA缓冲液盐酸胍仪器、耗材转子离心机实验步骤1. 制备表达带组氨酸尾的融合蛋白的大肠杆菌菌体沉淀。2. 准备NTA介质层析柱,但柱子最后以GuMCAC-0缓冲液洗涤.3. 在冰浴中冻融菌体沉淀。加5 ml GuMCAC-0缓冲液,用吸管抽吸重悬,超声
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
Protein-Electrophoresis
DefinitionAmino acids, nucleotides, polypeptides, and other compounds in a colloidal state can be separated by the application of external voltages wh
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
选购色谱“芯”之Protein-A亲和填料的关键考核要素(二)
单分散 UniMab® 特色三:等保留时间放大,装更高柱床高机械强度让UniMab可以装填更高柱床,以提高批次处理量,降低缓冲液用量,从而提高生产效率,节约生产成本和能耗。关于UniMab层析介质采用等保留时间进行工艺放大生产,可详见本公众号于2018年1月5日发布的文章《提高单抗纯化产率,只有等高
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-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,
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
Bradford-–-Protein-Determination
Bradford – Protein DeterminationIntroductionA rapid and accurate method for the estimation of protein concentration. The technique is simpler, faster
BIURET-PROTEIN-ASSAY
BIURET PROTEIN ASSAYMATERIALSBiuret ReagentBovine serum albumin (BSA)Spectrophotometer and tubesPROCEDUREPrepare standard dilutions of BSA containing
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
Preparing-a-Selenomethionyl-Protein
PurposeThe protocol describes how to prepare selenomethionyl (Se-Met) protein using a regular E.coli strain. Selenium can be used for phase determinat
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
Protein-purification;-actin
Protein purification; actin Overview ACTINThe most abundant muscle and non-muscle cytoskeletal protein. MW 42 kDa, 374/375 amino acids; various
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
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
Protein-Staining-Procedures
This method was successful in our lab using prostate tissue and for our specific objectives. Investigators must be aware that they will need to tailor
Lowry-–-Protein-Determination
Lowry – Protein Determination(From Protein Protocols on CD-ROM Humana Press, 1998 - Section 1-2 The Lowry Method for Protein Quantitation Jakob H. Wat
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-
蛋白质二级结构预测(protein-secondary-structure-prediction)
蛋白质二级结构的预测开始于20世纪60年代中期。二级结构预测的方法大体分为三代,第一代是基于单个氨基酸残基统计分析,从有限的数据集中提取各种残基形成特定二级结构的倾向,以此作为二级结构预测的依据。第二代预测方法是基于氨基酸片段的统计分析,使用大量的数据作为统计基础,统计的对象不再是单个氨基酸残基,而
蛋白质二级结构(protein-secondary-structure)预测软件
蛋白质二级结构的预测通常被认为是蛋白结构预测的第一步,二级结构是指α螺旋和β折叠等规则的蛋白质局部结构元件。不同的氨基酸残基对于形成不同的二级结构元件具有不同的倾向性。按蛋白质中二级结构的成分可以把球形蛋白分为全α蛋白、全β蛋白、α+β蛋白和α/β蛋白等四个折叠类型。预测蛋白质二级结构的算法大多以已