|M||Endogenous||Rat IgG2a, kappa|
Flow cytometric analysis of live mouse splenocytes using CD19 (1D3) Rat mAb (violetFluor™ 450 Conjugate)
(solid line) compared to concentration-matched Rat Isotype Control (violetFluor™ 450 Conjugate) (dashed line).Learn more about how we get our images.
NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade water.
posted June 2017
Protocol Id: 1504
For optimal flow cytometry results, we recommend 0.5 μg of antibody per test.
Supplied in 10 mM NaH2PO4, 150 mM NaCl, 0.09% NaN3, 0.1% gelatin, pH 7.2. This product is stable for 6 months when stored at 4ºC. Do not aliquot the antibody. Protect from light. Do not freeze.
CD19 (1D3) Rat mAb (violetFluor™ 450 Conjugate) recognizes endogenous levels of total mouse CD19 protein. This antibody detects an epitope within the extracellular domain.
This monoclonal antibody was purified from tissue culture supernatant via affinity chromatography. The purified antibody was conjugated under optimal conditions, with unreacted dye removed from the preparation.
This Cell Signaling Technology antibody is conjugated to violetFluor™ 450 and tested in-house for direct flow cytometric analysis in mouse cells.
CD19 is a 95 kDa coreceptor, which amplifies the signaling cascade in B cells (1). On the B cell surface, CD19 associates with CD21, CD81 and Leu-13 to exert its function. The cytoplasmic tail of CD19 has nine conserved tyrosine residues playing critical roles in CD19 mediated function by coupling signaling molecules to the receptor (1). After B cell receptor or CD19 ligation, Tyr531 and Tyr500 of CD19 are progressively phosphorylated. This phosphorylation enables the coupling of PI3 kinase and Src family tyrosine kinase to CD19 and activates the PI3K and Src signaling pathways (2,3). Coligation of B cell receptor and CD19 also promotes Tyr409 phosphorylation in CD19. The phosphorylation at these sites enables its binding to Vav and mediates elevated intracellular calcium response, as well as the JNK pathway (4,5).
The 1D3 clone is a widely used as a phenotypic marker for CD19 expression on the surface of murine B cells and subsets of dendritic cells.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc. violetFluor is a registered trademark of Tonbo Biosciences.
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