ATTO 565-Streptavidin

ATTO 565-Streptavidin is a fluorescent streptavidin conjugate designed for robust, high-affinity biotin-based labeling workflows. The ATTO 565 dye provides bright red/orange fluorescence for visualization and quantification, while the streptavidin component enables strong binding to biotinylated biomolecules, affinity handles, and capture surfaces. This reagent is commonly used when researchers need a convenient, multivalent fluorescent binder for assays, staining, and imaging formats that rely on biotin-streptavidin chemistry.

1. Biotin-Based Fluorescent Labeling

ATTO 565-Streptavidin is widely used to generate fluorescent conjugates from biotinylated antibodies, peptides, oligonucleotides, and other affinity reagents. Researchers in chemical biology and molecular imaging workflows use it to decorate biotinylated targets with a stable fluorescent tag for microscopy, imaging-based binding studies, and fluorescence readouts. Its streptavidin architecture supports multivalent binding, which is particularly helpful for labeling low-abundance biotinylated reagents where strong, reproducible fluorescence labeling is required.

2. Fluorescence Microscopy Staining

ATTO 565-Streptavidin supports fluorescence microscopy experiments that use biotinylated probes for cellular or biomaterial-associated labeling. In imaging workflows, the reagent is used to visualize biotinylated ligands bound to cell-surface receptors, immobilized biomolecular targets on coverslips, or patterned capture regions on engineered substrates. The ATTO 565 signal is well suited for red-channel imaging and colocalization studies when paired with complementary fluorophores in multicolor microscopy panels.

3. Flow Cytometry Target Detection

ATTO 565-Streptavidin is used in flow cytometry to convert biotinylated binding reagents into a fluorescent signal for cell-associated detection. Typical workflows include labeling biotinylated antibodies or ligands followed by streptavidin-ATTO 565 staining to quantify binding by fluorescence intensity. This approach is common in assay development and immunophenotyping-style experiments where a standardized streptavidin step helps streamline labeling consistency across samples.

4. Streptavidin Surface Coating

ATTO 565-Streptavidin is employed for fluorescence-based surface engineering and binding assays on biotin-functionalized materials. Researchers use it to create fluorescent readouts of immobilized biotinylated layers, to verify surface coverage in biomaterials research, and to support binding kinetics or wash-resistance studies in microplate or slide-based formats. The reagent's strong biotin affinity makes it useful for constructing fluorescent detection systems where surface-bound biotin serves as the capture handle.