CD19 is a transmembrane glycoprotein of Ig superfamily expressed by B cells from the time of heavy chain rearrangement until plasma cell differentiation. It forms a tetrameric complex with CD21 (complement receptor type 2), CD81 (TAPA-1) and Leu13. Together with BCR (B cell antigen receptor), this complex signals to decrease B cell treshold for activation by the antigen. Besides being signal-amplifying coreceptor for BCR, CD19 can also signal independently of BCR coligation and it turns out to be a central regulatory component upon which multiple signaling pathways converge. Mutation of the CD19 gene results in hypogammaglobulinemia, whereas CD19 overexpression causes B cell hyperactivity.
Clonality:
Monoclonal
Concentration:
1 mg/ml
Clone Designation:
[LT19]
Isotype:
Mouse IgG1
Buffer:
Phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide
Storage:
2°C to 8°C
Target:
CD19
Antibody Type:
Monoclonal Antibody
Application Notes:
Flow cytometry: Recommended dilution: 5 µg/ml.
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