The 6C3 antibody reacts with an epitope of the 6C3/BP-1 (Ly-51) glycoprotein cell-surface differentiation antigen, which was originally identified on pre-B cell lymphomas (spontaneous and chemical- or retrovirus- transformed, in vitro and in vivo). 6C3/BP-1 is a homodimer cell-surface glycoprotein with 140- kDa subunits which has been identified to possess aminopeptidase A (APA) activity. The same antigen is expressed at high levels on bone marrow stromal cell lines which support in vitro B lymphopoieses, on thymic dendritic cells and cortical epithelial cells, and on a wide variety of mouse and rat tissues known to possess APA activity. Subsets of normal bone marrow pre-B and B lymphocytes express low levels of Ly-51, which is rapidly up-regulated on the pre-B cells in the presence of IL-7. A role for the 6C3/BP-1 Molecule in the IL-7-driven proliferation of B cell precursors has been postulated. However, B-cell abnormalities were not detected in Ly-51-deficient mice. Mature B lymphocytes, thymocytes, peripheral T lymphocytes, erythroid cells, and myeloid cells (with the exception of thymic dendritic cells) do not express Ly-51. The 6C3 antibody can be used to identify cortical epithelium in frozen sections of thymuses from normal, SCID, and TCR-transgenic mice. It is possible that the low level of 6C3/BP-1 antigen detected, by flow cytometry, on some thymocytes may be passively adsorbed from adjacent epithelial cells during preparation of the cell suspensions.
BD Pharmingen™ Biotin Rat Anti-Mouse Ly-51 - Biotin - Clone 6C3 - Isotype Rat IgG2a, κ - Reactivity Ms - 0.5 mg
Purification
The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.
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Antigène
ENPEP
(Glutamyl Aminopeptidase (Aminopeptidase A) (ENPEP))