Phalloidin-Janelia Fluor® 646
Purity: ≥90%
Biological Activity
Phalloidin-Janelia Fluor® 646 is a red fluorescent F-actin probe. Phalloidin-Janelia Fluor® 646 is composed of the F-actin probe, Phalloidin (Cat. No. 4535), conjugated to Janelia Fluor® 646 (Cat. No. 6148). It is suitable for use in confocal and super-resolution microscopy techniques such as dSTORM. Excitation/emission maximum λ = 646/664 nm.Scientific Data
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Application of Phalloidin-Janelia Fluor® 646. HeLa cells were fixed for 10 minutes with 4% formaldehyde in PBS and permeabilized with PBS/0.25% Triton X-100 for 6 minutes. An additional post-fixation step was performed twice with 1% formaldehyde in PBS followed by 3 washes with PBS. Phalloidin Janelia Fluor® 646 was prepared as a 10 μM stock solution diluted in methanol and diluted to a working concentration of 20 nM in PBS. Stained cells were imaged with a Leica SP8X WLL upright confocal microscope. Image kindly provided by Brigitte Bergner, Steffen Dietzel, Core Facility Bioimaging at the Biomedical Center of the Ludwig-Maximilians-Universität München.
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Application of Phalloidin-Janelia Fluor® 646. HeLa cells were fixed for 10 minutes with 4% formaldehyde in PBS and permeabilized with PBS/0.25% Triton X-100 for 6 minutes. An additional post-fixation step was performed twice with 1% formaldehyde in PBS followed by 3 washes with PBS. Phalloidin Janelia Fluor® 646 was prepared as a 10 μM stock solution diluted in methanol and diluted to a working concentration of 20 nM in PBS. Stained cells were imaged with a Leica SP8X WLL upright confocal microscope. Image kindly provided by Brigitte Bergner, Steffen Dietzel, Core Facility Bioimaging at the Biomedical Center of the Ludwig-Maximilians-Universität München.
Optical Data for Phalloidin-Janelia Fluor® 646
| Emission Color | Red |
|---|---|
| Brightness | |
| λabs | 646 nm |
| λem | 664 nm |
| Extinction Coefficient (ε) | 152,000 M-1cm-1 |
| Quantum Yield (φ) | 0.54 |
| Closest Laser line | 640 nm |
| Application | Confocal Imaging, dSTORM, STED, Flow Cytometry |
Plan Your Experiments
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Technical Data
The technical data provided above is for guidance only.
For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Additional Information
Background References
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Effects of cytochalasin and phalloidin on actin.
Cooper
J.Cell Biol., 1987;105:1473 -
A general method to improve fluorophores for live-cell and single-molecule microscopy.
Grimm et al.
Nat.Methods, 2015;12:244
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