ATTO 425-Streptavidin

ATTO 425-Streptavidin is a fluorescent streptavidin conjugate built for high-contrast biotin-based labeling workflows, combining the strong affinity of streptavidin for biotinylated targets with the excitation/emission profile of the ATTO 425 dye. This reagent is commonly used when researchers need robust, non-covalent attachment of fluorescent tags to biotinylated biomolecules, probes, or capture surfaces for microscopy, imaging, and fluorescence readouts.

1. Biotin Conjugate Labeling

ATTO 425-Streptavidin is frequently used to fluorescently label biotinylated proteins, peptides, antibodies, and nucleic-acid constructs in labeling and detection workflows. Researchers typically incorporate it as a convenient fluorescent binder to attach ATTO 425 signal to biotinylated reagents without requiring additional dye-conjugation chemistry, enabling consistent staining of assay components for fluorescence microscopy and plate-based fluorescence measurements.

2. Fluorescence Microscopy Staining

ATTO 425-Streptavidin supports fluorescence microscopy experiments where biotinylated ligands or affinity reagents are used to mark specific targets on cells, biomolecular assemblies, or immobilized samples. In these workflows, the streptavidin conjugate provides a practical route to visualize biotin-tagged structures with an ATTO 425 fluorophore, supporting imaging of binding patterns, localization of labeled biomolecules on surfaces, and fluorescent tracking of assay reagents in fixed or prepared samples.

3. Flow Cytometry Signal Tagging

ATTO 425-Streptavidin is used in flow cytometry workflows to generate fluorescent signals from biotinylated cell-surface binders, detection reagents, or engineered constructs. By coupling the conjugate's streptavidin-biotin recognition to biotinylated targeting elements, laboratories can fluorescently tag specific assay components and quantify labeled populations using standard flow cytometry detection channels appropriate for ATTO 425 emission.

4. Streptavidin-Coated Surface Probing

ATTO 425-Streptavidin is also applied in biomaterials and surface-based studies where biotinylated capture molecules or probes are immobilized and then visualized through fluorescent streptavidin binding. This approach is used to confirm surface functionalization, map probe attachment, and monitor binding performance in imaging-based material characterization, including fluorescence readouts from biotinylated layers on microplates, membranes, and engineered substrates.