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Janelia Fluor® 635, SE
Red fluorogenic fluorescent dye; supplied as an NHS ester for coupling to primary amine groups. NHS ester can be converted to relevant substrate for use in self-labeling tag systems, e.g. HaloTag® and SNAP-tag®. Suitable for confocal fluorescent imaging and super resolution microscopy (SRM) techniques, such as dSTORM (live and fixed cells). Also suitable for flow cytometry. Cell permeable. Excitation maximum = 635 nm; emission maximum = 652 nm; Quantum yield = 0.56; Max extinction coefficient = 167,000 M-1cm-1 (measured in Ethanol or TFE plus 0.1% TFA); Correction factor = 0.0524. Exhibits low nonspecific background staining.
To measure the absorbance spectrum of this dye we recommend the following solvent: ethanol or trifluoroethanol plus 0.1% TFA.
We also offer Janelia Fluor® conjugated antibodies and custom conjugation services with our sister company Novus Biologicals.
HaloTag is a trademark of Promega Corporation, and SNAP-tag is a trademark of New England BioLabs, Inc.
Sold under license from the Howard Hughes Medical Institute, Janelia Research Campus
Application of Janelia Fluor® 635, SE dye on Mitochondria
Application of Janelia Fluor® 635, SE dye on mitochondria; Left: Mitochondria were labeled with anti-TOM20 primary antibodies. The secondary antibodies were conjugated to JF 635 dye Left: Maximum intensity projection of confocal z-stack, recorded on an Olympus FV1200 confocal microscope. Right: Enlarged portion of left-hand image.
Images kindly provided by Dr Kirstin Elgass, Monash University
Optical Data for Janelia Fluor® 635, SE
|Extinction Coefficient (ε)||167,000 M-1cm-1|
|Quantum Yield (φ)||0.56|
|Closest Laser line||635 nm|
|Reactive Group||NHS ester|
|Correction Factor 280||0.0524|
|Application||Confocal imaging, SRM, Flow|
|Alternative For||Alexa Fluor® 633, Atto 633, CF633|
Alexa Fluor® is a registered trademark of Molecular Probes, Inc, a Thermo Fisher Scientific Company.
|Storage||Store at -20°C|
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.
|Solvent||Max Conc. mg/mL||Max Conc. mM|
Preparing Stock Solutions
The following data is based on the product molecular weight 629.69. 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|
|1 mM||1.59 mL||7.94 mL||15.88 mL|
|5 mM||0.32 mL||1.59 mL||3.18 mL|
|10 mM||0.16 mL||0.79 mL||1.59 mL|
|50 mM||0.03 mL||0.16 mL||0.32 mL|
References are publications that support the biological activity of the product.
Grimm et al (2017) A general method to fine-tune fluorophores for live-cell and in vivo imaging. Nat.Methods 14 987 PMID: 28869757
If you know of a relevant reference for Janelia Fluor® 635, SE, please let us know.
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Citations for Janelia Fluor® 635, SE
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Protocols for Janelia Fluor® 635, SE
The following protocol features additional information for the use of Janelia Fluor® 635, SE (Cat. No. 6419).
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