ATTO 647N DPPE

ATTO 647N DPPE is a lipophilic ATTO 647N fluorophore conjugate incorporated into a phospholipid (DPPE) scaffold, enabling robust membrane association for fluorescence labeling and imaging workflows. Its far-red emission is commonly leveraged to reduce spectral overlap in multicolor fluorescence experiments, while the lipid anchor supports stable incorporation into lipid environments such as supported bilayers and vesicles. Researchers use ATTO 647N DPPE as a practical fluorescent membrane tracer for microscopy and flow-based readouts where membrane partitioning and photostable far-red detection are advantageous.

1. Membrane Labeling Microscopy

ATTO 647N DPPE is widely used as a membrane-incorporating fluorescent probe for fluorescence microscopy of lipid bilayers and cell membranes, including studies of membrane dynamics, trafficking, and membrane organization. In typical imaging workflows, the DPPE lipid anchor partitions into lipid phases, allowing researchers to visualize membrane-associated structures with far-red fluorescence that is compatible with common filter sets and multichannel experiments. This labeling strategy is frequently applied in membrane biophysics, where controlled membrane staining is needed for quantitative analysis of membrane morphology and spatial distribution.

2. Liposome And Vesicle Tracing

ATTO 647N DPPE supports vesicle and liposome labeling for fluorescence tracking experiments in which membrane-associated fluorescence is required to monitor vesicle binding, fusion, or transport in vitro. Materials and chemical biology teams often incorporate the lipid-conjugated dye into liposomes to generate a stable membrane marker that remains associated with the vesicle surface during incubation and washing steps. The far-red emission profile helps maintain signal separation from many green/orange fluorophores used in parallel assays, supporting multicomponent characterization of vesicle behavior.

3. Supported Bilayer Surface Studies

ATTO 647N DPPE is frequently employed to fluorescently characterize supported lipid bilayers and planar membrane-mimetic surfaces used in biosensor development and surface biophysics. By anchoring to lipid phases, the probe enables visualization of bilayer uniformity, defect formation, and adsorption events of membrane-associated components under controlled buffer conditions. Researchers also use ATTO 647N DPPE as a convenient membrane fluorescence reference when optimizing surface functionalization strategies that rely on lipid-mediated assembly.

4. Flow Cytometry Membrane Staining

ATTO 647N DPPE is used as a far-red membrane stain in flow cytometry workflows that require robust labeling of cell surfaces or membrane-containing particles while maintaining compatibility with multicolor panels. In these applications, the DPPE lipid component drives membrane association, producing a fluorescence signal that can be quantified by instrument channels tuned for far-red detection. This approach is commonly adopted in cell biology and biomaterials research where membrane labeling is used to compare populations, monitor binding of membrane-active reagents, or assess fluorescence-tagged vesicle uptake in suspension assays.