Prospec/Streptavidin Protein/Streptavidin/2mg/PRO-283-2mg-2mg
商品编号：
PRO-283-2mg-2mg
品牌：
prospecbio
市场价：
¥1000.00
美元价：
450.00
产品分类：
人体抗原
公司分类：
human_antigen
联系Q Q：
3392242852
电话号码：
4000-520-616
电子邮箱：
info@ebiomall.com
商品介绍
Catalogue number
PRO-283
Introduction
Streptavidin is a tetrameric protein secreted by Streptomyces avidinii which binds firmly to biotin. Streptavidin is wilyde used in molecular biology through its unique high affinity for the vitamin biotin. The dissociation constant (Kd) of the biotin-streptavidin complex is about ~10-15 mol/L. The strong affinity recognition of biotin and biotinylated molecules has made streptavidin one of the most important components in diagnostics and laboratory kits. The streptavidin/biotin system has one of the biggest free energies of association of yet observed for noncovalent binding of a protein and small ligand in aqueous solution (K_assoc = 10**14). The complexes are also extremely stable over a wide range of temperature and pH.
Description
Streptavidin is a protein produced by Streptomyces avidinii and isolated by purification from fermentation broth. The pure, homogeneous protein shows predominantly one single band in SDS PAGE. Streptavidin consists of 4 identical subunits, each bearing an active binding site for biotin. Streptavidin has a molecular weight of 55kDa.
Source
Bacterium Streptomyces avidinii.
Physical Appearance
Sterile Filtered lyophilized powder.
Formulation
Lyophilized (1mg/ml) in 50mM NaCl, pH 9.0.
Solubility
Gives a clear solution at 5mg/ml in 0.1M NaCl.
Stability
Streptavidin although stable at 4°C for 3 weeks, should be stored desiccated below -18°C. For longer storage in dissolved form add 1mM EDTA and/or 0.02 % NaN3 or pass the solution through a sterile filter.Please prevent freeze-thaw cycles.
Specific Activity
The biological activity is 16.8 U/mg, 1 unit binds 1µg biotin.
Safety Data Sheet
SDS
Usage
ProSpec"s products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
品牌介绍
ProSpec-Tany TechnoGene Ltd.公司创立人Dr. Tanchum (Tany) Amarant 主要致力于蛋白生物化学方面的研究工作，1947年出生于以色列。1991-1997创建ReProGen 公司，从事细胞因子和趋化因子的大量生产及纯化；1997-2000创建ProSpec-TechnoGene，主要生产用于生命科学研究的各种重组蛋白及相关抗体。拥有专利United States Patent 5434135。
ProSpec is an evolving biotech company providing highly purified proteins worldwide which serve the research community with cytokine-related products for cancer, apoptosis, development, endocrinology, immunology, neuroscience, proteases, and stem cell research.
Among our proteins are Interferons, Interleukins, Bone Morphogenic Proteins, Tumor Necrosis factors, Leptins, Stem Cell factors, Prolactins, Chemokines, Antibodies, Peptides, Enzymes, Viral Antigens, various growth factors such as: Platelet Derived, Epidermal, Insulin Like, Nerve, Connective Tissue, Vascular Endothelial, Fibroblast and more.....
Our research team and scientists have been able to assemble more than 1700 recombinant proteins, peptides and antibodies for your research needs. The proteins are rigorously tested to meet the research and development demand for excellent quality, uncompromising biological activity at competitive prices.
ProSpec has established sterling reputation among the scientific community, a reputation built on innovative products, customer service and attention to detail. Our reputation for quality is an essential factor in achieving a favorable position in the market place and the benefits associated with manufacturing top quality products.
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