- Clone
- CD28.2 (See other available formats)
- Regulatory Status
- RUO
- Workshop
- V-CD28.05
- Other Names
- T44, Tp44
- Isotype
- Mouse IgG1, κ
- Ave. Rating
- Submit a Review
- Product Citations
- publications

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Human peripheral blood lymphocytes were stained with CD28 (clone CD28.2) Alexa Fluor® 647 (filled histogram) and mouse IgG1, κ Alexa Fluor® 647 isotype control (open histogram).
Cat # | Size | Price | Quantity Check Availability | Save | ||
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302953 | 25 tests | 124 CHF | ||||
302954 | 100 tests | 265 CHF |
CD28 is a 44 kD disulfide-linked homodimeric type I glycoprotein. It is a member of the immunoglobulin superfamily and is also known as T44 or Tp44. CD28 is expressed on most T lineage cells, NK cell subsets, and plasma cells. CD28 binds both CD80 and CD86 using a highly conserved motif MYPPY in the CDR3-like loop. CD28 is considered a major co-stimulatory molecule, inducing T lymphocyte activation and IL-2 synthesis, and preventing cell death. In vitro studies indicate that ligation of CD28 on T cells by CD80 and CD86 on antigen presenting cells provides a costimulatory signal required for T cell activation and proliferation.
Product DetailsProduct Details
- Verified Reactivity
- Human, Cynomolgus, Rhesus
- Reported Reactivity
- Baboon, Capuchin Monkey, Chimpanzee, Pigtailed Macaque, Sooty Mangabey, Squirrel Monkey
- Antibody Type
- Monoclonal
- Host Species
- Mouse
- Formulation
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and BSA (origin USA)
- Preparation
- The antibody was purified by affinity chromatography and conjugated with Alexa Fluor® 647 under optimal conditions.
- Concentration
- Lot-specific (to obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.)
- 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.
- Application
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FC - Quality tested
- Recommended Usage
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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 5 µl per million cells in 100 µl staining volume or 5 µl per 100 µl of whole blood.
* Alexa Fluor® 647 has a maximum emission of 668 nm when it is excited at 633 nm / 635 nm.
Alexa Fluor® and Pacific Blue™ are trademarks of Life Technologies Corporation.
View full statement regarding label licenses - Excitation Laser
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Red Laser (633 nm)
- Application Notes
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The Ultra-LEAF™ Purified antibody (Endotoxin < 0.01 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for highly sensitive assays.
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Application References
(PubMed link indicates BioLegend citation) -
- Schlossman S, et al. Eds. 1995. Leucocyte Typing V. Oxford University Press. New York.
- Nunes J, et al. 1993. Biochem. J. 293:835.
- Calea-Lauri J, et al. 1999. J. Immunol. 163:62.
- Tazi A, et al. 1999. J. Immunol. 163:3511. (IHC)
- Marti F, et al. 2001. J. Immunol. 166:197. (Costim)
- Jeong SH, et al. 2004. J. Virol. 78:6995. (Costim)
- Rivollier A, et al. 2004. Blood 104:4029. (Costim)
- Scharschmidt E, et al. 2004. Mol. Cell Biol. 24:3860. (Costim)
- Sheng W, et al. 2007.Elsevier 580:6819. PubMed
- Mitsuhashi M. 2007. Clin Chem.53:148. PubMed
- Ye Z, et al. 2008. Infect. Immun. 76:2541. PubMed
- Magatti M, et al. 2008. Stem Cells 26:182. (FA) PubMed
- Yoshino N, et al. 2008. Exp. Anim. (Tokyo) 49:97. (FC)
- Berg M, et al. 2008. J Leukoc Biol. 83:853. (IP) PubMed
- Rout N, et al. 2010. PLoS One 5:e9787. (FC)
- Leonard JA, et al. 2011. J. Virol. 85:6867. PubMed
- Nomura T, et al. 2012. J. Virol. 86:6481. PubMed
- RRID
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AB_2721412 (BioLegend Cat. No. 302953)
AB_2721413 (BioLegend Cat. No. 302954)
Antigen Details
- Structure
- Ig superfamily, type I transmembrane glycoprotein, homodimer, 44 kD
- Distribution
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Mature T cells, thymocytes, NK cell subsets, plasma cells, EBV-positive B cells
- Function
- T cell costimulation
- Ligand/Receptor
- CD80, CD86
- Cell Type
- B cells, NK cells, Plasma cells, T cells, Thymocytes, Tregs
- Biology Area
- Costimulatory Molecules, Immunology
- Molecular Family
- CD Molecules
- Antigen References
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1. Schlossman S, et al. Eds. 1995. Leucocyte Typing V. Oxford University Press. New York.
2. June CH, et al. 1994. Immunol. Today 15:321.
3. Linskey PS, et al. 1993. Annu. Rev. Immunol. 11:191. - Gene ID
- 940 View all products for this Gene ID
- UniProt
- View information about CD28 on UniProt.org
Related FAQs
Other Formats
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Compare Data Across All Formats
This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.
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APC anti-human CD28
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Biotin anti-human CD28
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FITC anti-human CD28
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PE anti-human CD28
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PE/Cyanine5 anti-human CD28
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Purified anti-human CD28
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Alexa Fluor® 488 anti-human CD28
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Alexa Fluor® 700 anti-human CD28
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PerCP/Cyanine5.5 anti-human CD28
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Pacific Blue™ anti-human CD28
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PE/Cyanine7 anti-human CD28
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Ultra-LEAF™ Purified anti-human CD28
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Brilliant Violet 421™ anti-human CD28
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Brilliant Violet 510™ anti-human CD28
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Purified anti-human CD28 (Maxpar® Ready)
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PE/Dazzle™ 594 anti-human CD28
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Brilliant Violet 785™ anti-human CD28
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Brilliant Violet 650™ anti-human CD28
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Brilliant Violet 711™ anti-human CD28
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APC/Fire™ 750 anti-human CD28
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Alexa Fluor® 647 anti-human CD28
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TotalSeq™-A0386 anti-human CD28
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TotalSeq™-B0386 anti-human CD28
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TotalSeq™-C0386 anti-human CD28
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Brilliant Violet 605™ anti-human CD28
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APC/Cyanine7 anti-human CD28
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PE anti-human CD28
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APC anti-human CD28
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Brilliant Violet 750™ anti-human CD28
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PE/Fire™ 810 anti-human CD28
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GMP PE anti-human CD28
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TotalSeq™-D0386 anti-human CD28
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Spark Violet™ 423 anti-human CD28
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GMP Ultra-LEAF™ Purified anti-human CD28 SF
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GMP APC anti-human CD28
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PE/Cyanine7 anti-human CD28
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GMP Ultra-LEAF™ Biotin anti-human CD28 SF
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PerCP/Cyanine5.5 anti-human CD28
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Spark Blue™ 515 anti-human CD28
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