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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