- E18 (See other available formats)
- Regulatory Status
- Other Names
- Tp44, T44
- Mouse IgG2b, κ
- Ave. Rating
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- Product Citations
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CD28 is a 44 kD glycoprotein, also known as Tp44 or T44. It is a member of the Ig superfamily, expressed on thymocytes, most peripheral T cells, and NK cells. In association with CD80 (B7-1) and CD86 (B7-2), CD28 acts as the second signal for T and NK cell activation and proliferation. The E18 antibody blocks the binding of 37.51 antibody to CD28 and costimulates T cell activation and proliferation.Product Details
- Antibody Type
- Host Species
- A20 cells and recombinant mCD28Ig
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
- The antibody was purified by affinity chromatography, and conjugated with FITC under optimal conditions.
- 0.5 mg/ml
- Storage & Handling
- The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.
FC - Quality tested
- 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 ≤ 1.0 µg per 106 cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.
- Excitation Laser
Blue Laser (488 nm)
- Application Notes
Additional reported applications (for the relevant formats) include: in vitro costimulation of T and NK cells1, in vitro blocking of allogeneic mixed leukocyte response and inhibition of MHC-unrestricted CTL cytotoxicity, and in vitro induction of thymocyte differentiation. The LEAF™ purified antibody (Endotoxin <0.1 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for functional assays (Cat. No. 122004).
(PubMed link indicates BioLegend citation)
- Dennehy KM, et al. 2006. J. Immunol. 176:5725.
- Product Citations
AB_604062 (BioLegend Cat. No. 122007)
AB_604075 (BioLegend Cat. No. 122008)
- Ig superfamily, 44 kD
Thymocytes, CD4+, CD8+ peripheral T cells, NK cells
- Costimulates T and NK cells
- CD80 (B7-1), CD86 (B7-2)
- Cell Type
- NK cells, T cells, Thymocytes, Tregs
- Biology Area
- Costimulatory Molecules, Immunology
- Molecular Family
- CD Molecules
- Antigen References
1. Barclay AN, et al. 1997. The Leukocyte Antigen FactsBook Academic Press.
2. Lenschow DJ, et al. 1996. Annu. Rev. Immunol. 14:233.
3. Gross JA, et al. 1992. J. Immunol. 149:380.
- Gene ID
- 12487 View all products for this Gene ID
- View information about CD28 on UniProt.org
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