PA Janelia Fluor® 549, SE

Cat. No. 6149new

PA Janelia Fluor 549, SE C32H25N5O6 [1811539-42-0]

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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

Biological Activity

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. Compatible with self-labeling tag systems (e.g. HaloTag® and SNAPtag®). 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.

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

Technical Data

M.Wt:
575.58
Formula:
C32H25N5O6
Solubility:
Soluble to 10 mM in DMSO
Storage:
Store at -20°C
CAS No:
1811539-42-0

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Product Datasheet / Safety Datasheet

References are publications that support the products' biological activity.

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.

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