Streptavidin/重组链（霉）亲和素_详细资料

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Streptavidin/重组链（霉）亲和素

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Streptavidin/重组链（霉）亲和素
产品编号：PRO-791
产品规格：10μg/50μg/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 produced in E.Coli is a single, non-glycosylated polypeptide chain having a molecular mass of 18 kDa.

Source Escherichia Coli.

Physical Appearance Sterile Filtered colorless solution.

Formulation The Streptavidin protein solution contains 50mM Tris-HCl pH-8 & 0.15M NaCl.

Stability Streptavidin although stable 20°C for 1 week, should be stored at 4°C.

Purity Greater than 90.0% as determined 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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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 produced in E.Coli is a single, non-glycosylated polypeptide chain having a molecular mass of 18 kDa.
Source	Escherichia Coli.
Physical Appearance	Sterile Filtered colorless solution.
Formulation	The Streptavidin protein solution contains 50mM Tris-HCl pH-8 & 0.15M NaCl.
Stability	Streptavidin although stable 20°C for 1 week, should be stored at 4°C.
Purity	Greater than 90.0% as determined 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.