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Annexin V, XFD594 conjugate
XFD594 is manufactured by AAT Bioquest, and it has a chemical structure similar to that of Alexa Fluor® 594 (Alexa Fluor® is the trademark of Thermo Fisher). Annexins are a family of proteins that bind to phospholipid membranes in the presence of calcium. Annexin V is a valuable tool for studying cell apoptosis. It is used as a probe to detect cells which have expressed phosphatidylserine on the cell surface, a feature found in apoptosis as well as other forms of cell death. In apoptosis, PS is transferred to the outer leaflet of the plasma membrane. The appearance of phosphatidylserine on the cell surface is a universal indicator of the initial/intermediate stages of cell apoptosis and can be detected before morphological changes can be observed. There are a variety of parameters that can be used for monitoring cell viability. Annexin V-dye conjugates are widely used to monitor cell apoptosis through measuring the translocation of phosphatidylserine (PS). XFD594-Annexin V conjugate is the same molecule as the Alexa Fluor® 594-Annexin V. This probe is one of the most popular fluorescent dye-Annexin V conjugates used for monitoring cell apoptosis.
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CatalogSize
Price
Quantity
20096100 tests
Price
 
Physical properties

Molecular weight~36000
SolventWater
Spectral properties

Absorbance (nm)592
Correction factor (260 nm)0.43
Correction factor (280 nm)0.56
Extinction coefficient (cm -1 M -1)
92000
Excitation (nm)590
Emission (nm)618
Quantum yield
0.66
1
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12352200
Instrument settings

Flow cytometer
Excitation532 or 561 nm laser
Emission610/20 nm filter
Instrument specification(s)PE-Texas Red channel

Fluorescence microscope
ExcitationCy3/TRITC filter set
EmissionCy3/TRITC filter set
Recommended plateBlack wall/clear bottom
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Page updated on August 11, 2025