- A161A1 (See other available formats)
- Regulatory Status
- Other Names
- Rat IgG2b, κ
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- Product Citations
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CD4, also known as T4/Leu-3, is a 55 kD single-chain type I transmembrane glycoprotein and member of the immunoglobulin superfamily. It is expressed on most thymocytes, helper T cells, type II NKT cells, and monocytes/macrophages. CD4 is part of the TCR/CD3 complex, binds to β2 domain from the MHC class II molecule, and participates in TCR signal transduction. CD4 is the receptor of IL-16 and is a coreceptor for the human immunodeficiency virus (HIV) and human herpes virus 7 (HHV-7).Product Details
- Antibody Type
- Host Species
- Human CD4 T cells
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and 0.2% (w/v) BSA (origin USA)
- The antibody was purified by affinity chromatography and conjugated with PE/Cyanine5 under optimal conditions.
- Lot-specific (please contact technical support for concentration and total µg amount, or use our Lookup tool if you have a lot number.)
- 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 5 µL per million cells in 100 µL staining volume or 5 µL per 100 µL of whole blood. It is recommended that the reagent be titrated for optimal performance for each application.
- Excitation Laser
Blue Laser (488 nm)
Green Laser (532 nm)/Yellow-Green Laser (561 nm)
AB_2894490 (BioLegend Cat. No. 357429)
AB_2894490 (BioLegend Cat. No. 357430)
- 55 kD, type I transmembrane glycoprotein, member of the Ig superfamily
Helper T cells, subset of thymocytes, monocytes/macrophages, type II NKT cells
- Part of the TCR/CD3 complex
- β2 domain from the MHC class II
- Cell Type
- Macrophages, Monocytes, NKT cells, T cells
- Biology Area
- Molecular Family
- CD Molecules
- Antigen References
1. Zhu J, et al. 2010. Annu Rev. Immunol. 28:445.
2. Vignali DA. 2010. J. Immunol. 184:5933.
3. Zhou L, et al. 2009. Immunity 30:646.
4. Singer A, et al. 2008. Nat. Rev. Immunol. 8:788.
5. Zhu J and Paul WE. 2008. Blood 112:1557.
- Gene ID
- 920 View all products for this Gene ID
- View information about CD4 on UniProt.org
- I am unable to see expression of T cell markers such as CD3 and CD4 post activation.
- TCR-CD3 complexes on the T-lymphocyte surface are rapidly downregulated upon activation with peptide-MHC complex, superantigen or cross-linking with anti-TCR or anti-CD3 antibodies. PMA/Ionomycin treatment has been shown to downregulate surface CD4 expression. Receptor downregulation is a common biological phenomenon and so make sure that your stimulation treatment is not causing it in your sample type.
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