Flutax 2
Chemical Name: (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-Bis(acetyloxy)-9-[(2R,3S)-3-(benzoylamino)-2-hydroxy-1-oxo-3-phenylpropoxy]-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-11-hydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-4-yl ester N-[(2',7'-difluoro-3',6'-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-5-yl)carbonyl]-L-alanine
Purity: ≥90%
Biological Activity
Flutax 2 is a green fluorescent taxol derivative. Binds microtubules with high affinity (Ka ~ 107M-1). Can be used for imaging microtubules in live cells, isolated cytoskeletons and microtubule suspensions. Binds to α, β tubulin dimers and stabilizes them. Flutax 2 is soluble and pH insensitive, and is more photostable than Flutax 1 (Cat. No. 2226). Excitation/emission maximum λ ~ 496/526 nm.Scientific Data
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Flutax 2 labeled HeLa cells. Flutax 2 was diluted in HBSS and applied to live HeLa cells at a concentration of 2 μM. HeLa cells were incubated for 1 hour at 37°C. After incubation was complete, Flutax 2 was washed off, and fresh HBSS was applied to the cells. Cells were not fixed because Flutax 2 staining is not retained at all after fixation (photobleach). Like Flutax 1, Flutax 2 staining in live cells diminishes very rapidly when exposed to light, so the cells should be exposed to light as little as possible to retain good signal.
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.
Background References
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Location and properties of the Tax. binding center in microtubules: a picosecond laser study with fluorescent taxoids.
Lillo et al.
Biochemistry., 2002;41:12436 -
Molecular recognition of Tax. by microtubules. Kinetics and thermodynamics of binding of fluorescent Tax. derivatives to an exposed site.
Diaz et al.
J.Biol.Chem., 2000;275:26265
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