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Invitrogen
Annexin V Recombinant Protein, APC
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Product Details
BMS306APC-100
Product Specifications
Expression System
E. coli
Class
Recombinant
Type
Protein
Conjugate
Excitation/Emission Max
651/660 nm
Form
Liquid
Concentration
5 µL/Test
Storage conditions
4°C, do not freeze
Shipping conditions
Wet ice
Product Specific Information
Description: Annexins are a family of calcium-dependent phospholipid-binding proteins, which bind to phosphatidylserine (PS) to identify apoptotic cells. In healthy cells, PS is predominantly located along the cytosolic side of the plasma membrane. Upon initiation of apoptosis, PS loses its asymmetric distribution in the phospholipid bilayer and translocates to the extracellular membrane, which is detectable with fluorescently labeled Annexin V. In early stages of apoptosis, the plasma membrane excludes viability dyes such as propidium iodide (PI) and 7-AAD, therefore cells which display only Annexin V staining (PI/7-AAD negative) are in early stages of apoptosis. During late-stage apoptosis, loss of cell membrane integrity allows Annexin V binding to cytosolic PS, as well as cell uptake of PI and 7-AAD. Annexin V staining, paired with 7-AAD or PI is widely used to identify apoptotic stages by flow cytometry.
Annexin V has also been identified as an anticoagulant protein in the blood coagulation cascade, by acting as an inhibitor of prothrombin activation. The presence of antibodies to Annexin V is associated with systemic lupus erythematosus (SLE), recurrent spontaneous abortions and systemic sclerosis (SSc).
Purity: Annexin V is >89% pure as demonstrated by SDS-gel electrophoresis and reverse phase HPLC.
The fluorochrome allophycocyanin (APC) shows an excitation maximum of 650 nm and an emission maximum of 660 nm. Annexin V conjugated to APC is suitable for the detection of phosphatidylserine and allows simple secondary labelling by staining, for example, the membrane surface proteins with a monoclonal antibody for further cellular characterization.
Target Information
The protein encoded by this gene belongs to the annexin family of calcium-dependent phospholipid binding proteins some of which have been implicated in membrane-related events along exocytotic and endocytotic pathways. Annexin 5 is a phospholipase A2 and protein kinase C inhibitory protein with calcium channel activity and a potential role in cellular signal transduction, inflammation, growth and differentiation. Annexin 5 has also been described as placental anticoagulant protein I, vascular anticoagulant-alpha, endonexin II, lipocortin V, placental protein 4 and anchorin CII. The gene spans 29 kb containing 13 exons, and encodes a single transcript of approximately 1.6 kb and a protein product with a molecular weight of about 35 kDa.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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