- MEM-55 (See other available formats)
- Regulatory Status
- V CD45.08
- Other Names
- Mouse IgG2b, κ
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- Product Citations
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CD45RB is a 180-240 kD single chain type I membrane glycoprotein. It is an exon 5 splice variant of the tyrosine phosphatase CD45. The CD45RB isoform is expressed on thymocytes, T cell subsets, B cells, monocytes/macrophages, granulocytes, and dendritic cells. CD45RB enhances both T cell receptor and B cell receptor signaling mediated activation. CD45 and its isoforms non-covalently associate with lymphocyte phosphatase-associated phosphoprotein (LPAP) on T and B lymphocytes. CD45 has been reported to be associated with several other cell surface antigens including CD1, CD2, CD3, and CD4. CD45 has also been reported to bind galectin-1. CD45 isoform expression can change in response to cytokines. The MEM-55 antibody recognizes a silaidase-sensitive epitope of CD45.Product Details
- Human, African Green, Baboon, Cynomolgus, Rhesus
- Antibody Type
- Host Species
- Human thymocytes and T lymphocytes
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
- The antibody was purified by affinity chromatography.
- 0.5 mg/ml
- Storage & Handling
- The antibody solution should be stored undiluted between 2°C and 8°C.
FC - Quality tested
IHC-P - Verified
IP, WB - Reported in the literature, not verified in house
- Recommended Usage
Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤2.0 µg per million cells in 100 µl volume. For immunohistochemistry, a concentration range of 5.0 - 10.0 µg/ml is suggested. It is recommended that the reagent be titrated for optimal performance for each application.
- Application Notes
The MEM-55 antibody is specific for a glycosylated-CD45RB epitope that is highly expressed on memory B cells and plasmablasts but not on naïve B cells. Additional reported applications (for the relevant formats) include: immunoprecipitation, Western blotting, and immunohistochemical staining of formalin-fixed paraffin-embedded tissue sections.
(PubMed link indicates BioLegend citation)
- Horejsi V, et al. 1988. Folia Biol. 34:23.
- Bazil V, et al. 1989. Immunogenetics 29:202.
- Knapp W, et al. 1989. Leucocyte Typing IV. Oxford University Press. New York.
- Schlossman S, et al. Eds. 1995. Leucocyte Typing V. Oxford University Press. New York.
- Koethe S, et al. 2011. J. Leukoc. Biol. 90:5.
- Product Citations
AB_314805 (BioLegend Cat. No. 310202)
- Tyrosine phosphatases, type I transmembrane, 180-240 kD (exon 5 splicing of CD45 gene)
Thymocytes, T cell subset, B cells, monocytes/macrophages, granulocytes, dendritic cells
- Enhances TCR and BCR signaling
- Galectin-1, CD2, CD3, CD4
- Cell Type
- B cells, Dendritic cells, Granulocytes, Macrophages, Monocytes, T cells, Thymocytes, Tregs
- Biology Area
- Cell Biology, Immunology, Inhibitory Molecules, Neuroscience, Neuroscience Cell Markers
- Molecular Family
- CD Molecules
- Antigen References
1. Thomas M. 1989. Annu. Rev. Immunol. 7:339.
2. Trowbridge I, et al. 1994. Annu. Rev. Immunol.12:85.
- Gene ID
- 5788 View all products for this Gene ID
- View information about CD45RB on UniProt.org
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