ATTO Rho13

ATTO Rho13 is a red-emitting ATTO dye designed for fluorescence labeling workflows where bright signal and robust performance in common fluorescence imaging setups are required. Its reactive functionality enables covalent attachment to biomolecules and labeling handles, supporting visualization and tracking of targets in microscopy and fluorescence-based assays. Researchers commonly employ ATTO Rho13 conjugates as molecular imaging reagents and fluorescent tags for quantitative fluorescence readouts.

1. Fluorescence Microscopy Labeling

ATTO Rho13 is frequently used to generate red fluorescent labeling reagents for cellular and molecular microscopy studies, including tracking of proteins, peptides, and other biomolecular constructs. In practice, ATTO Rho13 conjugates are incorporated into staining or labeling protocols for fixed-sample imaging and fluorescence localization experiments where a long-wavelength emission is advantageous for reducing background from shorter-wavelength autofluorescence. Imaging teams also use ATTO Rho13-labeled targets to compare spatial distribution across experimental conditions, leveraging the dye's compatibility with standard fluorescence microscope filter sets used for red channels.

2. Flow Cytometry Fluorescent Tagging

ATTO Rho13 is applied in flow cytometry workflows when red fluorescence labeling is needed for multicolor panel development and quantitative population analysis. Conjugated ATTO Rho13 reagents are used to label biomolecules that report on binding events, expression markers, or engineered constructs, enabling gating strategies that separate labeled and unlabeled samples. Flow cytometry users often select ATTO Rho13 because its red emission supports spectral separation from common green and blue fluorophores, facilitating multiplex staining designs in cell analysis experiments.

3. Fluorescence Bioassay Development

ATTO Rho13 is used as a fluorescent reporter in fluorescence-based bioassay development, particularly when covalent labeling of assay components is required to produce stable fluorescent conjugates. Assay developers incorporate ATTO Rho13 into labeled probes, detection reagents, or assay substrates to enable endpoint fluorescence measurements and to monitor binding or interaction events in plate-based formats. This dye is also used in assay optimization studies where consistent red-channel readout is needed for comparing reagent lots, assay conditions, or experimental variables during method development.

4. Protein And Antibody Conjugates

ATTO Rho13 is widely leveraged for preparing fluorescent protein conjugates, including labeled antibodies, antibody fragments, and affinity reagents used for binding and localization experiments. In chemical biology and molecular imaging workflows, ATTO Rho13 conjugates provide a red fluorescent tag that supports visualization of target binding on surfaces, in solution binding assays, or in imaging experiments where fluorescent readout is used to quantify labeling intensity. Researchers also use ATTO Rho13-labeled affinity reagents to build fluorescent detection tools for downstream characterization of biomolecular interactions.