Submit a Review & Earn an Amazon Gift Card
You can now submit reviews for your favorite Tocris products. Your review will help other researchers decide on the best products for their research. Why not submit a review today?!
Submit ReviewPA Janelia Fluor® 549, SE
Description: Yellow photoactivatable dye (Reactive group: NHS ester). Applications: super resolution microscopy (PALM), single molecule tracking and live cell imaging
Chemical Name: 2,5-Dioxo-1-pyrrolidinyl 3',6'-di-1-azetidinyl-2-diazo-2,3-dihydro-3-oxospiro[1H-indene-1,9'-[9H]xanthene]-6-carboxylate
Purity: ≥90% (HPLC)
Biological Activity for PA Janelia Fluor® 549, SE
PA Janelia Fluor® 549, SE is a photoactivatable fluorescent dye; supplied as an NHS ester for coupling to primary amine groups. Non-fluorescent until activated at 365 nm. Photochemical quantum yield of uncaging = 2.2%, with improved yield upon protein conjugation. 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® 646, SE (Cat. No. 6150) to perform two-color sptPALM in live cells with activation at 405 nm. Cell permeable. Excitation maximum = 551 - 553 nm; emission maximum = 570 - 573 nm.
Please see the protocol for further information on protein/antibody labeling and conjugation.
HaloTag is a trademark of Promega Corporation, and SNAP-tag is a trademark of New England BioLabs, Inc.
Licensing Information
Sold under license from the Howard Hughes Medical Institute, Janelia Research Campus
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
Technical Data for PA Janelia Fluor® 549, SE
| M. Wt | 575.58 |
| Formula | C32H25N5O6 |
| Storage | Store at -20°C |
| Purity | ≥90% (HPLC) |
| CAS Number | 1811539-42-0 |
| PubChem ID | 126569714 |
| InChI Key | ZJZWRNGNJDEPEQ-UHFFFAOYSA-N |
| Smiles | O=C(ON1C(CCC1=O)=O)C2=CC=C(C(C3=[N+]=[N-])=O)C(C43C5=CC=C(N6CCC6)C=C5OC7=CC(N8CCC8)=CC=C47)=C2 |
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.
Solubility Data for PA Janelia Fluor® 549, SE
| Solvent | Max Conc. mg/mL | Max Conc. mM | |
|---|---|---|---|
| Solubility | |||
| DMSO | 5.76 | 10 |
Preparing Stock Solutions for PA Janelia Fluor® 549, SE
The following data is based on the product molecular weight 575.58. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 0.1 mM | 17.37 mL | 86.87 mL | 173.74 mL |
| 0.5 mM | 3.47 mL | 17.37 mL | 34.75 mL |
| 1 mM | 1.74 mL | 8.69 mL | 17.37 mL |
| 5 mM | 0.35 mL | 1.74 mL | 3.47 mL |
Molarity Calculator
Molarity Calculator
Calculate the mass, volume, or concentration required for a solution.
Reconstitution Calculator
Reconstitution Calculator
Dilution Calculator
Dilution Calculator
Calculate the dilution required to prepare a stock solution.
Product Datasheets for PA Janelia Fluor® 549, SE
References for PA Janelia Fluor® 549, SE
References are publications that support the biological activity of the product.
Grimm et al (2016) Bright photoactivatable fluorophores for single-molecule imaging. Nat.Methods 13 985 PMID: 27776112
Li et al (2016) Real-time imaging of Huntingtin aggregates diverting target search and gene transcription. eLife 5 e17056 PMID: 27484239
Hong et al (2009) Phosphorylation of the RNA polymerase II C-terminal domain by TFIIH kinase is not essential for transcription of Saccharomyces cerevisiae genome. Proc.Natl.Acad.Sci.USA. 106 14276 PMID: 19666497
If you know of a relevant reference for PA Janelia Fluor® 549, SE, please let us know.
View Related Products by Target
Keywords: PA Janelia Fluor 549, SE, PA Janelia Fluor 549, SE supplier, PA, JF549, Photoactivatable, caged, Janelia, Fluor, 549-SE, fluorescent, dyes, NHS, ester, self-labeling, tag, systems, microscopy, cell, permeable, super, resolution, Dyes, 6149, Tocris Bioscience
1 Citation for PA Janelia Fluor® 549, SE
Citations are publications that use Tocris products. Selected citations for PA Janelia Fluor® 549, SE include:
Genshaft et al (2021) Live cell tagging tracking and isolation for spatial transcriptomics using photoactivatable cell dyes Nat Commun 12 4995 PMID: 34404785
Do you know of a great paper that uses PA Janelia Fluor® 549, SE from Tocris? Please let us know.
Reviews for PA Janelia Fluor® 549, SE
There are currently no reviews for this product. Be the first to review PA Janelia Fluor® 549, SE and earn rewards!
Have you used PA Janelia Fluor® 549, SE?
Submit a review and receive an Amazon gift card.
$50/€35/£30/$50CAN/¥300 Yuan/¥5000 Yen for first to review with an image
$25/€18/£15/$25CAN/¥75 Yuan/¥1250 Yen for a review with an image
$10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen for a review without an image
Protocols for PA Janelia Fluor® 549, SE
The following protocol features additional information for the use of PA Janelia Fluor® 549, SE (Cat. No. 6149).
Literature in this Area
Tocris offers the following scientific literature in this area to showcase our products. We invite you to request* your copy today!
*Please note that Tocris will only send literature to established scientific business / institute addresses.
Fluorescent Dyes and Probes Research Product Guide
This product guide provides a background to the use of Fluorescent Dyes and Probes, as well as a comprehensive list of our:
- Fluorescent Dyes, including dyes for flow cytometry
- Fluorescent Probes and Stains, including our new MitoBrilliantTM mitochondria stains
- Tissue Clearing Kits and Reagents
- Aptamer-based RNA Imaging Reagents
- Fluorescent Probes for Imaging Bacteria
- TSA VividTM Fluorophore Kits
- TSA Reagents for Enhancing IHC, ICC & FISH Signals