Annexin V-iFluor 647 Apoptosis Detection Kit (ab219919) contains Annexin V labeled with our proprietary orange fluorescent dye iFluor 647, which allows the identification and quantification of apoptotic cells on a single-cell basis by flow cytometry or fluorescence microscopy.
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Key facts
- Detection method
Fluorescent
- Sample types
Suspension cells, Adherent cells
- Assay type
Quantitative
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Target data
Function
This protein is an anticoagulant protein that acts as an indirect inhibitor of the thromboplastin-specific complex, which is involved in the blood coagulation cascade.
Alternative names
ANX5, ENX2, PP4, ANXA5, ANX5, ENX2, PP4, Annexin A5, Anchorin CII, Annexin V, Annexin-5, Calphobindin I, Endonexin II, Lipocortin V, Placental anticoagulant protein 4, Placental anticoagulant protein I, Thromboplastin inhibitor, Vascular anticoagulant-alpha, CPB-I, PP4, PAP-I, VAC-alpha
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Annexin V-iFluor 647 Apoptosis Detection Kit (ab219919) contains Annexin V labeled with our proprietary orange fluorescent dye iFluor 647, which allows the identification and quantification of apoptotic cells on a single-cell basis by flow cytometry or fluorescence microscopy.
Key facts
- Detection method
Fluorescent
- Sample types
Suspension cells, Adherent cells
- Assay type
Quantitative
- Assay Platform
Flow cytometer, Fluorescence microscope
Storage
- Shipped at conditions
Blue Ice
- Appropriate short-term storage conditions
+4°C
- Appropriate long-term storage conditions
+4°C
- Storage information
+4°C
Notes
Annexin V-iFluor 647 Apoptosis Detection Kit (ab219919) contains Annexin V labeled with our proprietary orange fluorescent dye iFluor 647, which allows the identification and quantification of apoptotic cells on a single-cell basis by flow cytometry or fluorescence microscopy.
The iFluor 647 dye (Ex/Em = 650/680 nm) has spectral properties almost identical to those of Cy5® or Alexa Fluor® 647, making it convenient to be used for common fluorescence instruments equipped with the light sources and filters for Cy5® or Alexa Fluor® 647.
Annexins are a family of calcium-dependent phospholipid-binding proteins. They are abundant in eukaryotic organisms belonging to a family of ubiquitous
Apoptosis is a regulated process of cell death that occurs during embryonic development as well as maintenance of tissue homeostasis. Inappropriately regulated apoptosis is implicated in different disease states, such as neurodegeneration disease and cancer. The apoptosis program is characterized by morphologic features, including loss of plasma membrane asymmetry and attachment, condensation off the cytoplasm and nucleus, and compaction and fragmentation of the nuclear chromatin. Exposure of phosphatidylserine (PS) on the external surface of the cell membrane has been reported to occur in the early phases of apoptotic cell death, during which the cell membrane remains intact. In leukocyte apoptosis, PS on the outer surface of the cell marks the cell for recognition and phagocytosis by macrophages. The human vascular anticoagulant, annexin V, is a 35-36 kDa Ca2+ dependent phospholipid binding protein that has a high affinity for PS, and shows minimal binding to phosphatidylcholine and sphingomyelin. Changes in PS asymmetry, which can be analyzed by measuring annexin V binding to the cell membrane, are generally observed before morphological changes associated with apoptosis occurred and before membrane integrity is lost.
Cy5® and Alexa Fluor® 647 are the trademarks of GE Healthcare and Invitrogen respectively.
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Flow Cytometry - Annexin V-iFluor 647 Apoptosis Detection Kit (ab219919)
The detection of binding activity of Annexin V-iFluor 647 and phosphatidylserine in Jurkat cells.
Annexin V-iFluor 647 Apoptosis Detection Kit (ab219919). Detection of phosphatidylserine (PS) exposure in Jurkat cells. Jurkat cells were left untreated (blue) or treated with 20 μM camptothecin (red) in a 37°C, 5% CO2 incubator for 4-5 hours. Cells were then incubated with Annexin V-iFluor reagent and PI for 30 minutes. The fluorescence intensitiy of Annexin V-iFluor 647 was measured with a FACSCalibur (BD Systems) flow cytometer using the FL41channel.
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