Streptavidin lyophilized 链霉亲和素 2-0203-010

保存条件 ：-20

保质期 ：24

英文名 ：Streptavidin lyophilized

库存 ：999+

供应商 ：IBA Lifesciences

规格 ：10 mg

Streptavidin is a tetrameric protein composed of identic subunits. Each subunit specifically binds one biotin molecule with fM affinity, which makes it one of the strongest non-covalent interactions known. The preparation contains an N- and C-terminal shortened variant (core streptavidin) with improved properties regarding homogeneity, solubility, resistance towards proteolytic degradation, and accessibility of the biotin binding pocket as compared to native streptavidin. 

The streptavidin:biotin system is widely used for immobilization and detection of biotinylated molecules, like proteins and nucleic acids. IBA Lifesciences provides bulk amounts of lyophilized streptavidin in reliable and high quality at competitive prices to generate streptavidin-coated surfaces (microplates, SPR chips, beads) or detection reagents conjugated with, e.g., fluorescent dyes. 

Please note that streptavidin is not applicable for detection, immobilization, and purification of Strep-tag®II and Twin-Strep-tag® fusion proteins, since the binding affinity for both tags is too low.

链霉亲和素，链亲和素（英语：Streptavidin，亦称为链霉亲和素）是从细菌阿维丁链霉菌中纯化出的一种60kDa的蛋白质。链亲和素同源四聚体对生物素（即维生素B₇）具有极高的亲和力。生物素与链亲和素的结合是已知自然界中最强的非共价相互作用之一，因为链亲和素-生物素复合物对有机溶剂、变性剂（如盐酸胍）、洗涤剂（如SDS与曲拉通）、蛋白水解酶类及极端温度和pH具有良好耐受力，故链亲和素被广泛用于分子生物学与生物纳米技术中。

IBA提供的链霉亲和素可以用于固定相的包被，如多孔板，磁珠，芯片等。

产品特点：

• >17U/mg 的高活性
• 纯度>95%
• 可提供大批量
• 可提供媲美GMP 级的高质量
• 申请可以寄送免费试用装