Thermo Scientific DyLight 800 Sulfhydryl-Reactive Dye is a maleimide-activated derivative of high-performance DyLight 800 used to fluorescently label sulfhydryl-containing peptides, proteins and other biomolecular probes.
DyLight 800 is a near-IR fluor that is invisible to the naked eye but increases the staining options when using infrared imaging systems. DyLight 800 has spectral properties that are very similar to other near-IR dyes, including Alexa Fluor™ 790 and IRDye™ 800. The high water solubility of DyLight Fluors means that a high dye-to-protein ratio can be attained without causing precipitation of the conjugates.
- High performance – DyLight 800 replaces Alexa Fluor 800 and IRDye 800 for near-infrared staining
- Specific – maleimide-activated dye labels proteins and other molecules at reduced sulfhydryls (-SH)
- Efficient labeling methods – well-characterized chemistry and optimized protocols provide for reliable, high-quality labeling
- Optimized antibody labeling procedure –complete protocol for IgG reduction and labeling and calculating the labeling efficiency
- Antibody labeling for immunofluorescence applications, including immunocytochemistry (ICC), immunohistochemistry (IHC), Western blotting and ELISA assay
- Target macromolecule labeling for in vitro and in vivo fluorescent detection strategies
||Two-color infrared Western blot detection using DyLight 680- and DyLight 800-Conjugated Secondary Antibodies. p53 (53 kDa; red) and cyclophilin B (21 kDa; green) levels in response to siRNA expression in A549 cells were detected by Western blot analysis using DyLight 680- (red) and DyLight 800- (green) Conjugated Secondary Antibodies. Beta-catenin (90 kDa, green) was used as the load control. Imaged with the Odyssey™ Infrared Imaging System using the 700 and 800 channels.
DyLight 800 Sulfhydryl-Reactive Dye is activated with a maleic acid imide (maleimide) moiety to form a reactive alkylation reagent. Labeling occurs through reaction of the maleimide-activated dye with reduced sulfhydryl groups (-SH) to form stable thioether bonds. Maleimides are specific for sulfhydryl groups between pH 6.5-7.5. Learn more about maleimide chemistry.
DyLight 800 Fluorophore Overview Page
Complete DyLight Fluor Product Guide
All Fluorescent Labeling Reagents and Kits
DyLight Fluor Secondary Antibody Conjugates
DyLight Fluor Streptavidin and NeutrAvidin Conjugates
DyLight 800 Fluor, free acid – used as controls and calibrants
Krypton Fluorescent Protein Stains