ATTO 390 azide

ATTO 390 azide is a reactive ATTO 390 fluorophore azide designed for copper-catalyzed azide-alkyne cycloaddition (CuAAC) click labeling. Its azide functionality enables efficient attachment to alkyne-bearing biomolecules, linkers, and surfaces, while the ATTO 390 emission supports fluorescence imaging and quantitative fluorescence readouts in common microscopy and plate-based workflows.

1. Biomolecule Click Labeling

ATTO 390 azide is widely used by chemical biology and bioconjugation groups to fluorescently tag proteins, peptides, and other biomolecules that have been equipped with terminal alkynes. Researchers incorporate the dye into labeling workflows for tracking conjugate formation, quantifying labeling efficiency, and visualizing biomolecule distribution in fluorescence microscopy and gel-based fluorescence analysis. The azide handle makes it straightforward to build fluorescent bioconjugates for downstream assays without requiring dye exchange after conjugation.

2. Fluorescent Probe Construction

ATTO 390 azide supports fluorescent probe development where an ATTO 390 fluorophore must be installed onto a defined scaffold, such as clickable linkers, affinity reagents, or probe backbones bearing alkyne groups. In practice, teams use the reagent to generate imaging reagents for localization studies and to prepare fluorescent standards for assay development. The click-compatible azide functionality is particularly useful when probe assembly needs to be modular, enabling rapid replacement or optimization of the targeting or recognition component while keeping the fluorophore constant.

3. Surface And Material Functionalization

ATTO 390 azide is also applied in biomaterials and surface chemistry workflows to create fluorescently labeled coatings, hydrogels, and patterned surfaces starting from alkyne-functional substrates. Materials researchers use the dye to visualize surface coverage, monitor immobilization steps, and generate fluorescent readouts for material characterization. This approach is commonly used when the final material must be compatible with optical imaging, allowing spatial mapping of functionalization on surfaces or within polymer networks.