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Streptavidin, His/重组链(霉)亲和素, His

点击次数:210发布时间:2012/10/30 19:18:59

Streptavidin, His/重组链(霉)亲和素, His

更新日期:2024/10/16 16:00:43

所 在 地:美洲

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简单介绍:Streptavidin, His/重组链(霉)亲和素, His

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Streptavidin, His/重组链(霉)亲和素, His

产品编号:PRO-621
产品规格:5μg/20μg/1mg
 
 
 
Introduction Streptavidin is a tetrameric protein secreted by Streptomyces avidinii which binds firmly to biotin. Streptavidin is widely 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 Streptomyces Avidinii Recombinant fused to N-terminal His-Tag produced in E.Coli is a single, non-glycosylated polypeptide chain containing 167 amino acids and having a molecular mass of 17 kDa.
Source Escherichia Coli.
Physical Appearance Sterile Filtered colorless solution.
Formulation The Streptavidin protein solution contains 20mM Tris-HCl pH7.5.
Stability Streptavidin although stable 4°C for 4 weeks, should be stored desiccated below -18°C.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Please prevent freeze-thaw cycles.
Amino Acid Sequence MVHHHHHHDP SKDSKAQVSA AEAGITGTWY NQLGSTFIVT AGADGALTGT YESAVGNAES RYVLTGRYDS APATDGSGTA LGWTVAWKNN YRNAHSATTW SGQYVGGAEA RINTQWLLTS GTTEANAWKS TLVGHDTFTK VKPSAASIDA AKKAGVNNGN PLDAVQQ.
Purity Greater than 95.0% as determined by(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.
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.

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