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信帆生物
别名:重组蛋白L(Recombinant Peptostreptococcus magnus Protein L)
来源:大肠杆菌
性状:冻干粉
冻干前体系:5mM PB、PH7.4
分子量:46kDa
等电点(PI):4.73
纯度:≥95%(SDS-PAGE检测)
使用方法:无菌水配制,现用现配
规格:1mg、5mg、10mg、100mg、500mg
保存:-20℃
有效期:3年
简介:天然的 Protein L 由719个氨基酸组成,不含二硫键,与IgG的轻链(L链)结合。Protein L主要与Kappa轻链有亲和力。Protein L的对不同的IgG,IgM,IgA,IgE以及IgD均有亲和力。
Protein L结合轻链的Kappa区域,与lambda没有亲和作用,亲和位点在轻链的I、III、IV区域。Protein 能够L和广泛的免疫球蛋白相结合的蛋白质,该蛋白只与抗体的 κ 轻链结合而不会影响抗体的抗原结合位点,这一特性使其与蛋白A或蛋白G相比,能更广泛地结合各种来源及亚类的抗体。
它不结合牛、山羊或绵羊来源的免疫球蛋白,可以用于从添加BSA或FCS的培养液中纯化单克隆抗体。
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文献和实验Rationally Designed Ligands for Use in Affinity Chromatography: An Artificial Protein L
. Protein L (PpL), isolated from Peptostreptococcus magnus strains, interacts with the Fab (antigen-binding fragment) portion of Igs, specifically with kappa light chains, and represents an almost universal ligand for the purification of antibodies
Analysis and Purification of Antibody Fragments Using Protein A, Protein G, and Protein L
Today, monoclonal antibodies (mAbs) form the largest category of biopharmaceuticals in clinical trials and their number is expanding rapidly (DataMonitor 2007). The antibodies or functional antibody fragments are being produced in artificial
Purification of Antibody Light Chains by Metal Affinity and Protein L Chromatography
(five or six His residues) placed at either the C- or N-terminus of a recombinant protein can form a stable chelate with immobilized transition metals. This allows fractionation of the target protein to 90–95% purity levels in a single chromatographic step (2 –4 ). Metals
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