Streptavidin Quantum Dots, Dispersion, λex = 620nm

Typical Properties
Catalog	ACMA00022670
Purity	99.9 %
Appearance	Dispersion
Storage	2-8 °C
Composition	CdSe,CdSe/ZnS
Concentration	1 uM
Diameter	2-10 nm
Emission Peak Width	< 35 nm
Fluorescent Emission Peak	620 nm
Quality Level	100
Quantum Yield	≥ 70 %
Shipping	Ice Pack
Solvent	10 mM PBS buffer (pH 7.4), 0.01% BSA and 0.02% NaN3
Surfactant Coating	Streptavidin
Zeta Potential	From -25 mV to -40 mV

Overview

Description

Streptavidin quantum dots are obtained by covalent coupling between streptavidin and CdSe and CdSe/ZnS core-shell quantum dots with functional groups. Streptavidin is a slightly acidic (pH6.0) protein purified from the bacterium Streptavidin, which can bind to tetramolecular biotin with high specificity, and the affinity between the two is extremely strong. Thus streptavidin-labeled quantum dots can bind biotinylated molecules such as proteins, DNA and peptides and be used for trace detection and functional studies.

Features

·Narrow emission peak
·Wide choice of emission colors
·Low non-specific binding
·High colloidal stability
·High quantum efficiency

Application

·Cell or tissue fluorescent labeling
·Gene chip
·Biological sensor
·Multiplexing