Clone Number: A59
Conjugate: FITC
Immunogen: Ag8.653 myeloma cells
Format: Purified antibody is conjugated with fluorescein isothiocyanate (FITC) under optimum conditions and unconjugated antibody and free fluorochrome are removed by size-exclusion chromatography.
Storage buffer: Stabilizing phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide
Additional info: CD89 (Fc-alpha-R) is a type I transmembrane glycoprotein serving as a receptor for IgA. Soluble CD89 is detectable in serum and retains its IgA binding capacity. For signal transduction the association with FcR gamma chain homodimers is needed. CD89 is expressed on granulocytes, monocytes, macrophages, dendritic cells and myeloid cell lines. Its expression is upregulated in presence of IgA immune complexes, stimulators (such as LPS, PMA), TNF alpha, IL1 beta or GM-CSF, and it is downregulated in presence of TGF beta and suramin. Binding of IgA-opsonized targets to CD89 leads to phagocytic and cytotoxic processes of the immunologic defense.SpecificityThe mouse monoclonal antibody ABRA1-01 recognizes human ABRA1 (Abraxas, CCDC98), an adaptor protein involved in DNA repair, which migrates as a 45 kDa band on PAAGE under reducing conditions.Application detailsFlow cytometry: The reagent is designed for analysis of human blood cells using 4 μl reagent / 100 μl of whole blood or 106 cells in a suspension. The content of a vial (0.4 ml) is sufficient for 100 tests.
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