ATTO 550 Streptavidin(CAT: I040818) is a bright, red-fluorescent conjugate of streptavidin and the ATTO 550 dye, designed for high-sensitivity labeling of biotinylated proteins, antibodies, or nucleic acids. With a maximum excitation/emission wavelength of 554/576 nm, it offers excellent photostability and fluorescence intensity, making it ideal for fluorescence microscopy, flow cytometry, and other imaging applications. The strong streptavidin-biotin interaction ensures reliable and specific binding, while the ATTO 550 dye provides clear and consistent signal output. ATTO 550 Streptavidin is an optimal choice for researchers requiring precise, high-performance fluorescent labeling in various biological and biochemical assays.