ATTO 514 amine

ATTO 514 amine is a reactive ATTO 514 fluorophore designed for fluorescent labeling workflows that require covalent attachment to amine-bearing biomolecules and polymers. Its amine-reactive functionality enables straightforward conjugate preparation for fluorescence microscopy and fluorescence-based assays, where robust red/orange emission and dye brightness are advantageous for multicolor imaging and quantitative readouts.

1. Protein And Antibody Labeling

ATTO 514 amine is used by researchers to generate fluorescently labeled proteins, antibodies, and antibody-derived reagents for binding studies and imaging experiments. In typical workflows, the dye is conjugated to lysine-rich targets to produce stable fluorescent conjugates for fluorescence microscopy, plate-based fluorescence assays, and characterization of binding interactions. This labeling format is especially common in molecular biology and chemical biology labs that need a red/orange-emitting dye compatible with standard fluorescence instrumentation and multichannel experimental designs.

2. Fluorescence Microscopy Staining

ATTO 514 amine supports cellular and biomaterial-associated fluorescence microscopy by enabling covalent staining of amine-containing components, including extracellular matrix proteins, cell-surface proteins, and fixed sample labeling reagents. Investigators use ATTO 514 conjugates to visualize localization patterns, track biomolecular distributions, and build multicolor staining panels where the dye's emission region helps separate signals from commonly used green and far-red fluorophores. The amine-reactive labeling approach is frequently selected when nonspecific adsorption is undesirable and when covalent attachment improves labeling retention during washing steps.

3. Flow Cytometry Conjugate Preparation

ATTO 514 amine is applied in flow cytometry reagent development to prepare fluorescent conjugates for cell-surface or intracellular staining strategies that rely on amine-containing biomolecules. Researchers conjugate the dye to targeting proteins or detection reagents to generate fluorescent probes that can be used in suspension assays for population analysis and gating-based readouts. This approach is common in assay development and immunoassay optimization, where consistent covalent labeling supports reproducible staining across experimental batches and enables multicolor panel construction using emission separation.

4. Fluorescent Polymer And Surface Labeling

ATTO 514 amine is also used to fluorescently functionalize polymers and material surfaces that present accessible amine groups, supporting materials research and biomaterials characterization. Teams working on hydrogel systems, coatings, and biointerfaces employ ATTO 514-labeled macromolecules to visualize material distribution, quantify labeling density in fluorescence readouts, and track biomolecule adsorption or coating stability under experimental conditions. The covalent labeling strategy helps maintain signal during processing steps such as washing, incubation, and imaging, which is important for reproducible materials workflows.