DyLight™ 550-Phosphine

Catalog number: 88910

Thermo Scientific™  Related applications: Protein Labeling & Crosslinking

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Thermo Scientific DyLight Fluor Phosphine Reagents are phosphine-activated fluorescent dyes for specific labeling and detection of azide-tagged molecules, which enables use of fluorescence imaging in metabolic labeling strategies.

When used in combination with azide labeling strategies, phosphine-activated DyLight Fluors enable selective fluorescent labeling for detection of protein interactions and post-translational modifications using fluorescence imaging technologies. The phosphine group conjugates to azide groups by the Staudinger reaction mechanism. Azide groups can be introduced into proteins or other cellular targets through in vivo labeling with azide-tagged derivatives of naturally occurring metabolic building blocks. Because neither phosphines nor azides are present in biological systems, they comprise a chemoselective (mutually specific) ligation pair for labeling and conjugation.

General features of the phosphine-activated DyLight Fluors:

Soluble—easily dissolves in water-miscible solvents (e.g., DMSO) for subsequent dilution in aqueous reaction mixtures with cell lysates and other biological samples
Compatible—reaction chemistry occurs effectively in simple buffer conditions; requires no accessory reagents such as copper or reducing agents, and does not interfere with fluorescence applications
Chemoselective—the phosphine reactive group is specific in biological samples for bioorthogonal azide-tagged molecules, ensuring that fluorescent labeling is specific
High-performance fluorescence—DyLight 488, 550 and 650 are intense, highly stable fluorophores for green, orange and red fluorescent detection. (see DyLight Fluors)

Related Products
DyLight™ 488-Phosphine
DyLight™ 650-Phosphine
For Research Use Only. Not for use in diagnostic procedures.


Solubility: DMF (Dimethylformamide)
Label or Dye: DyLight™ 550
Product Size: 1 mg
Chemical Reactivity: Azide

Contents & storage

Store desiccated at -20°C. Shipped at ambient temperature.


Manuals & protocols