Qdot 605 Probe
Qdot 605 probe is an excellent red-fluorescent label with outstanding brightness and photostability for imaging and flow cytometry applications. With an emission maximum of ~605 nm, Qdot 605 probe can be excited using 350, 488, 561, or 594 nm laser lines or standard TRITC filter. Optimum imaging results with brighter signals are achieved with a Qdot 605 filter or light cube.
Made from nanocrystals of semiconductor material, Qdot probes are broadly compatible with standard fluorescence techniques, but there are some novel aspects to their use that can be optimized to obtain the best possible results. In general they have an extremely broad excitation range and narrow emission with a large Stokes shift. Optimal brightness is generally achieved using a specific Qdot filter.
Organic fluorophores and Qdot probes can be readily combined in multiplexed flow cytometry or imaging studies. Longer-wavelength Qdot probes are also ideal for multiplexed western blots.
Qdot 605 probe dashboard
 Initial brightness |
For best results use a Qdot-optimized filter and PBS or a mounting medium without antifade.
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 Photostability in buffer |
| 35 | 350, 488, 561, 594 | RFP | UV | 605 |
 Stain index |
 Laser line |
 Common filter set |
 Excitation max |
 Emission max |
Qdot 605 products
The exceptional brightness and photostability of Qdot probes make it easier to detect low-abundance targets. With narrow and symmetric emission spectra, Qdot probes are also ideal for multiplexed fluorescence detection using a combination of Qdot probes and organic dyes.
- Qdot 605 streptavidin
- Biotin-labeled Qdot 605 probes
- Qdot 605 primary antibody conjugates
- Qdot 605 secondary antibody conjugates
- Isotype antibody controls - Mouse IgG2a, Qdot 605 conjugate
- Antibody labeling - Qdot 605 Antibody Conjugation Kit and the SiteClick Qdot 605 Antibody Labeling Kit
- Qtracker 605 Cell Labeling Kit
Flow cytometric analysis of whole blood cells using streptavidin conjugates of Qdot probes.
Ammonium chloride lysed whole blood cells were stained with mouse anti human CD3 biotin, washed, stained with Qdot 605 streptavidin conjugate, washed, stained with mouse anti human CD56 biotin, washed, and stained with Qdot 705 streptavidin conjugate, washed, resuspended, and analyzed by flow cytometry using 405 nm excitation and detected using 605⁄20 nm and 710⁄20 nm emission bandpass filters. The dot plot shows Qdot 705 streptavidin conjugate on the Y-axis and Qdot® 605 streptavidin conjugate on the X-axis.
Qdot 605 conjugation kits
We’ve developed functionalized versions of the Qdot 605 label for the preparation of custom conjugates of proteins and other biomolecules. The first—a carboxyl-derivatized form—can be coupled to amine groups of proteins and modified oligonucleotides. The second—an amine-derivatized PEG form—can be coupled to isothiocyanates and succinimidyl esters (or with native carboxylic acids using water-soluble carbodiimides).
| Amine | Aldehyde-, ketone, carboxylate or phosphate |
|---|---|
Qdot probes and accessories
Qdot Probes are made from nanocrystals of semiconductor material and are broadly compatible with standard fluorescence techniques, but there are some novel aspects to their use that can be optimized to obtain the best possible results.
- Qdot probes overview
- Qdot probe technology
- Qdot probes structure
- Qdot probes size
- EVOS Light Cube, Qdot 565
Designed to eliminate the complexities of microscopy without compromising performance. The Qdot 565 light cube is ideal for use with Qdot 565 and other fluorophores with excitation and emission maxima near 445 and 565 nm, respectively. - See a complete list of Qdot products
Resources
Molecular Probes Handbook
The significantly revised 11th Edition is the most complete fluorescence labeling and detection reference available. The Molecular Probes Handbook can help you achieve the best experimental results for your fluorescence labeling and detection experiments. View the handbook online or order your own copy.
Antifades and mounting media
High-performance antifade reagents like ProLong Antifade and SlowFade Antifade will inhibit the photobleaching of organic dyes but suppress the fluorescence of Qdot probes. A better solution for imaging Qdot probes is simply PBS or a clear, colorless toluene-based mounting medium formulated from acrylic resins without the addition of antifade components.
Cell stain tool
Stain your own cell by using our simulation tool to develop reproducible results with many of our signature fluorescent dyes. Develop your multiplexing strategy for antibody probes, reactive dyes, and counterstains to create your perfectly labeled fluorescent cell.
Fluorescence SpectraViewer
Plot and compare spectra and check the spectral compatibility for common fluorophores including all of the fluorescent probes from Thermo Fisher Scientific. The Fluorescence SpectraViewer tool is formatted for both microscope imaging and flow cytometry applications.
For Research Use Only. Not for use in diagnostic procedures.
