DADPS Biotin Azide
This reagent contains a biotin moiety linked to an azide moiety through a spacer arm containing a cleavable DADPS linker. Captured biomolecules can be efficiently released under mild conditions (10% formic acid, 0.5 h) and the small molecular fragment (143 Da) left on the labeled protein following cleavage.
Extraordinary strength of the streptavidin-biotin interaction allows for efficient capturing of even highly dilute targets; however, it makes recovery of proteins from affinity resins challenging. Conventional methods to elute biotinylated proteins from immobilized avidin include the following: (i) denaturation of streptavidin by boiling the resin in a denaturing buffer that may include high concentrations of chaotropic salts, (ii) trypsin digestion of proteins while they are bound to the resin, or (iii) elution of proteins with excess free biotin. These protocols can co-elute contaminant proteins by releasing nonspecifically bound proteins and/or naturally biotinylated proteins concurrently with labeled proteins. In addition, some of these methods can cause elution of high levels of resin-based peptides along with the proteins of interest, resulting in further sample contamination.
DADPS (dialkoxydiphenylsilane) Biotin Azide probes eliminate a major limitation of the streptavidin-biotin affinity purification. This reagent contains a biotin moiety linked to an azide moiety through a spacer arm containing a cleavable DADPS linker. Captured biomolecules can be efficiently released under mild conditions (5% or 10% formic acid, 0.5 h) and the small (143 Da) molecular fragment left on the labeled protein following cleavage. These features make the DADPS probe especially attractive for use in biomolecular labeling and proteomic studies.
1. Willems, L. I., et al. (2020). Tandem Bioorthogonal Labeling Uncovers Endogenous Cotranslationally O-GlcNAc Modified Nascent Proteins. J Am Chem Soc., 142 (37), 15729-15739. [PubMed]
2. Wang, J., et al. (2015). Mapping sites of aspirin-induced acetylations in live cells by quantitative acid-cleavable activity-based protein profiling (QA-ABPP).Sci. Rep.. 5: 7896. [PubMed]
3. Jinxu, G., et al. (2012). Small Molecule Interactome Mapping by Photoaffinity Labeling Reveals Binding Site Hotspots for the NSAIDs. J. Am. Chem. Soc.,. 140: 4259-68. [PubMed]
4. Szychowski, J., et al. (2010). Cleavable Biotin Probes for Labeling of Biomolecules via Azide?Alkyne Cycloaddition. J. Am. Chem. Soc., 132: 18351-60. [PubMed]
Abs/Em Maxima: 346/445 nmExtinction Coefficient: 19,000Spectrally Similar Dyes: Alexa Fluor? 350, CF? 350, DyLight 350, AMCAAZDye? 350 is a blue-fluorescent azide-activated probe that reacts with terminal alkynes via a copper-catalyzed click react…
Abs/Em Maxima: 402/424 nmExtinction Coefficient: 35,000Flow Cytometry Laser Line: 405 nmMicroscopy Laser Line: 405 nmSpectrally Similar Dyes: Alexa Fluor? 405, CF? 405, Cascade Blue?, DyLight? 405AZDye? 405 Azide is a water-soluble, pH-insensiti…
Abs/Em Maxima: 346/445 nmExtinction Coefficient: 19,000Spectrally Similar Dyes: Alexa Fluor? 350, CF? 350, DyLight 350, AMCAAZDye? 350 Alkyne (Alexa Fluor? 350 Alkyne equivalent) is a blue-fluorescent, alkyne-activated probe that reacts with azid…
Abs/Em Maxima: 430/537 nmExtinction Coefficient: 15,000Spectrally Similar Dyes: Alexa Fluor? 430, CF? 430AZDye? 430 Azide is a water-soluble, green-fluorescent azide-activated probe that reacts with terminal alkynes via a copper-catalyzed click re…
Abs/Em Maxima: 346/445 nmExtinction Coefficient: 19,000Spectrally Similar Dyes: Alexa Fluor? 350, CF? 350, DyLight 350, AMCAAZDye? 350 DBCO reacts with azides via a copper-free “click chemistry” reaction to form a stable triazole and does not re…
Abs/Em Maxima: 402/424 nmExtinction Coefficient: 35,000Flow Cytometry Laser Line: 405 nmMicroscopy Laser Line: 405 nmSpectrally Similar Dyes: Alexa Fluor? 405, CF? 405, Cascade Blue?, DyLight? 405AZDye? 405 Alkyne reacts with azides via a copper…
Abs/Em Maxima: 494/517 nmExtinction Coefficient: 73.000Flow Cytometry Laser Line: 488 nmMicroscopy Laser Line: 488 nmSpectrally Similar Dyes: Fluorescein, Alexa Fluor? 488, CF? 488A, DyLight? 488, Atto? 488AZDye? 488 Azide (Alexa Fluor? 488 Azi…
Abs/Em Maxima: 402/424 nmExtinction Coefficient: 35,000Flow Cytometry Laser Line: 405 nmMicroscopy Laser Line: 405 nmSpectrally Similar Dyes: Alexa Fluor? 405, CF? 405, Cascade Blue?, DyLight? 405ZDye? 405 DBCO reacts with azides via a copper-fr…
