PA Janelia Fluor® 646, SE

Catalog # Availability Size / Price Qty
6150/300U
Janelia Fluor Dyes Small Molecule
1 Image
Description: Photoactivatable cell permeable red fluorescent dye; supplied as NHS ester

Chemical Name: 2,5-Dioxo-1-pyrrolidinyl 3,7-di-1-azetidinyl-2'-diazo-5,5-dimethyl-2',3'-dihydro-5H-3'-oxospiro[dibenzo[b,e]siline-10,1'-indene]-6'-carboxylate

Product Details
Reviews (1)

Biological Activity

Photoactivatable fluorescent dye; supplied as an NHS ester for coupling to primary amine groups. Non-fluorescent until activated at 365 nm. NHS ester can be converted to relevant substrate for use in self-labeling tag systems, e.g. HaloTag® and SNAP-tag®. Suitable for single molecule tracking and super resolution microscopy in live cells, specifically live cell sptPALM and fixed cell PALM. Can be multiplexed with PA Janelia Fluor® 549, SE (Cat. No. 6149) to perform two-colour sptPALM in live cells with activation at 405nm. Cell permeable. Excitation maximum = 649 - 651 nm; emission maximum = 663 - 665 nm. Upon protein conjugation the efficiencies of photoconversion improve substantially. Low background staining.

HaloTag is a trademark of Promega Corporation, and SNAP-tag is a trademark of New England BioLabs, Inc.

Plan Your Experiments

Use our spectra viewer to interactively plan your experiments, assessing multiplexing options. View the excitation and emission spectra for our fluorescent dye range and other commonly used dyes.

Spectral Viewer

Spectral Viewer

Technical Data

M.Wt:
617.74
Formula:
C34H31N5O5Si
Solubility:
Soluble to 20 mM in DMSO
Storage:
Store at -20°C
CAS No:
2093120-32-0

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

Licensing Caveats:
Sold under license from the Howard Hughes Medical Institute, Janelia Research Campus

Product Datasheets

Reconstitution Calculator
Molarity Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Molarity Calculator

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*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

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Reviews for PA Janelia Fluor® 646, SE

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PA-JF646 for tracking single recombinant proteins
By Anonymous on 02/26/2018
Species: Other

This product was used to label recombinant proteins and image them with single molecule sensitivity. The degree of labeling achieved was 1.4 (average). The photoactivation efficiency of the dye is excellent and can be used to track a few molecules at a time, for long periods. The dye is highly photostable and can be used to track proteins for ~10-15 seconds under ideal tracking conditions. I attach here an image before and after photoactivation of the dye. Upon photoactivation, single dye molecules conjugated to the protein are visible.


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