ATTO 550 DMPE

ATTO 550 DMPE is a lipophilic ATTO 550-based fluorescent dye conjugated to a DMPE phospholipid anchor, enabling stable incorporation into lipid environments and lipid-containing materials. Its bright red-orange emission supports fluorescence labeling workflows where membrane association and robust retention are important, including imaging of lipid bilayers and preparation of fluorescent lipid probes for assay development.

1. Membrane Labeling Studies

ATTO 550 DMPE is frequently used to label cell membranes and model lipid bilayers in fluorescence microscopy and imaging experiments. Researchers incorporate the DMPE anchor into membranes to generate a lipid-associated fluorescent signal that tracks membrane organization and dynamics without requiring covalent modification of membrane proteins. This makes the reagent useful for studies of membrane mixing, lipid domain behavior, and membrane remodeling in microscopy-based workflows, where stable membrane-associated fluorescence improves experimental consistency during imaging sessions.

2. Liposome And Nanovesicle Tracing

ATTO 550 DMPE is commonly used to prepare fluorescent liposomes, supported lipid particles, and other lipid-based nanovesicles for tracking uptake, binding, and trafficking in cell culture and materials assays. The phospholipid anchor promotes uniform dye distribution within lipid assemblies, allowing researchers to follow vesicle localization and interactions using standard fluorescence imaging platforms. In formulation and biomaterials development, ATTO 550 DMPE-labeled lipid carriers are also used as convenient fluorescent tracers to compare relative behavior across preparation batches and experimental conditions.

3. FRET Labeling Platforms

ATTO 550 DMPE is well suited for constructing FRET-based fluorescence systems where a lipid-tethered ATTO 550 donor (or acceptor, depending on pairing) is required within membrane-like environments. Bioconjugation and fluorescence technology teams use DMPE-anchored ATTO 550 to position the fluorophore at defined lipid interfaces, supporting distance-dependent fluorescence readouts in membrane assays. This approach is particularly relevant for researchers building fluorescence reporting materials, membrane interaction assays, and lipid mixing experiments that benefit from a fluorophore constrained to the lipid phase.

4. Flow Cytometry Lipid Staining

ATTO 550 DMPE is used in flow cytometry workflows that require fluorescent labeling of lipid-containing structures or membrane-associated signals. Researchers stain lipid-rich samples such as liposome-treated cells or lipid-modified particles to quantify fluorescence intensity distributions by instrument-based analysis. The DMPE anchor helps maintain association with lipid components during sample handling, supporting reproducible staining for comparative studies across experimental groups.