Streptavidin [[Gold]

Product Overview

Streptavidin was conjugated to a 40 nm colloidal gold particle at 20 micrograms per mL

Nature

Synthetic

Tag/Conjugate

Gold

Buffer

Bovine Serum Albumin/Phosphate pH 7.4

Preservative

0.1% Sodium Azide

Storage

4°C

Introduction

Streptavidin /?str?p?t?v?d?n/ is a 52.8 kDa protein purified from the bacterium Streptomyces avidinii. Streptavidin homo-tetramers have an extraordinarily high affinity for biotin (also known as vitamin B7 or vitamin H). With a dissociation constant (Kd) on the order of ≈10?14 mol/L, the binding of biotin to streptavidin is one of the strongest non-covalent interactions known in nature. Streptavidin is used extensively in molecular biology and bionanotechnology due to the streptavidin-biotin complex's resistance to organic solvents, denaturants (e.g. guanidinium chloride), detergents (e.g. SDS, Triton), proteolytic enzymes, and extremes of temperature and pH.

Keywords

Streptavidin