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Brilliant Violet 421™ anti-human CD4 Antibody

Pricing & Availability
Clone
RPA-T4 (See other available formats)
Regulatory Status
RUO
Workshop
IV T114
Other Names
T4
Isotype
Mouse IgG1, κ
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Product Citations
publications
RPA-T4_BV421_1_032911
  • RPA-T4_BV421_1_032911
  • RPA-T4_BV421_2_032911
    Human peripheral blood lymphocytes were stained with CD3 FITC and CD4 (clone RPA-T4) Brilliant Violet 421™ (top) or mouse IgG1, κ Brilliant Violet 421™ isotype control (bottom).
  • RPA-T4_BV421_CD4_Antibody_ICC_012221
    Human peripheral mononuclear cells were fixed with 1% Paraformaldehyde (PFA), and then stained with 5 µg/ml of CD4 (clone RPA-T4) Brilliant Violet 421™ for 30 minutes at room temperature. The image was captured by 40X objective.
See Brilliant Violet 421™ spectral data
Cat # Size Price Save
300531 25 tests ¥41,800
300532 100 tests ¥67,820
Description

CD4, also known as T4, is a 55 kD single-chain type I transmembrane glycoprotein expressed on most thymocytes, a subset of T cells, and monocytes/macrophages. CD4, a member of the Ig superfamily, recognizes antigens associated with MHC class II molecules, and participates in cell-cell interactions, thymic differentiation, and signal transduction. CD4 acts as a primary receptor for HIV, binding to HIV gp120. CD4 has also been shown to interact with IL-16.

Product Details
Technical data sheet

Product Details

Reactivity
Human
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 Brilliant Violet 421™ 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

FC - Quality tested
ICC - Verified
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.

Brilliant Violet 421™ excites at 405 nm and emits at 421 nm. The standard bandpass filter 450/50 nm is recommended for detection. Brilliant Violet 421™ is a trademark of Sirigen Group Ltd.


Learn more about Brilliant Violet™.

This product is subject to proprietary rights of Sirigen Inc. and is made and sold under license from Sirigen Inc. The purchase of this product conveys to the buyer a non-transferable right to use the purchased product for research purposes only. This product may not be resold or incorporated in any manner into another product for resale. Any use for therapeutics or diagnostics is strictly prohibited. This product is covered by U.S. Patent(s), pending patent applications and foreign equivalents.
Excitation Laser
Violet Laser (405 nm)
Application Notes

The RPA-T4 antibody binds to the D1 domain of CD4 (CDR1 and CDR3 epitopes) and can block HIV gp120 binding and inhibit syncytia formation. Additional reported applications (for the relevant formats) include: immunohistochemistry of acetone-fixed frozen sections3,4,5, blocking of T cell activation1,2, and spatial biology (IBEX)10,11.  This clone was tested in-house and does not work on formalin fixed paraffin-embedded (FFPE) tissue. The Ultra-LEAF™ purified antibody (Endotoxin < 0.01 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for functional assays (Cat. No. 300569 - 300574).

Application References

(PubMed link indicates BioLegend citation)
  1. Knapp W, et al. 1989. Leucocyte Typing IV. Oxford University Press. New York. (Activ)
  2. Moir S, et al. 1999. J. Virol. 73:7972. (Activ)
  3. Deng MC, et al. 1995. Circulation 91:1647. (IHC)
  4. Friedman T, et al. 1999. J. Immunol. 162:5256. (IHC)
  5. Mack CL, et al. 2004. Pediatr. Res. 56:79. (IHC)
  6. Lan RY, et al. 2006. Hepatology 43:729.
  7. Zenaro E, et al. 2009. J. Leukoc. Biol. 86:1393. (FC) PubMed
  8. Yoshino N, et al. 2000. Exp. Anim. (Tokyo) 49:97. (FC)
  9. Stoeckius M, et al. 2017. Nat. Methods. 14:865. (PG)
  10. Radtke AJ, et al. 2020. Proc Natl Acad Sci USA. 117:33455-33465. (SB) PubMed
  11. Radtke AJ, et al. 2022. Nat Protoc. 17:378-401. (SB) PubMed
Product Citations
  1. Moguche AO et al. 2017. Cell host & microbe. 21(6):695-706 . PubMed
  2. Pissani F, et al. 2018. J Virol. 92:e01143. PubMed
  3. Mederacke YS, et al. 2019. Sci Rep. 1.084027778. PubMed
  4. Mastelic-Gavillet B, et al. 2019. J Immunother Cancer. 7:257. PubMed
  5. Tai YT, et al. 2019. Leukemia. 33:426. PubMed
  6. Afshar M, et al. 2015. Alcohol. 49:57. PubMed
  7. Cornelius C et al. 2016. EBioMedicine. 11:58-67 . PubMed
  8. Kerstein A, et al. 2016. J Autoimmun. S0896-8411(16)30186-X. PubMed
  9. Sam J, et al. 2020. Front Oncol. 10:575737. PubMed
  10. Juno JA, et al. 2020. Nat Med. 26:1428. PubMed
  11. Nakano M, et al. 2021. Front Immunol. 12:713225. PubMed
  12. Chen Y, et al. 2021. Front Mol Biosci. 8:777370. PubMed
  13. Vanuytsel K, et al. 2022. Nat Commun. 13:1103. PubMed
  14. Balle C, et al. 2022. J Clin Invest. 132: . PubMed
  15. Massafra V, et al. 2021. J Immunol. 207:493. PubMed
  16. Pellett Madan R, et al. 2020. Clin Transplant. 34:e14021. PubMed
  17. Mimitou EP, et al. 2021. Nat Biotechnol. 39:1246. PubMed
RRID
AB_10900084 (BioLegend Cat. No. 300531)
AB_10965645 (BioLegend Cat. No. 300532)

Antigen Details

Structure
Ig superfamily, type I transmembrane glycoprotein, 55 kD
Distribution

T cell subset, majority of thymocytes, monocytes/macrophages

Function
MHC class II co-receptor, lymphocyte adhesion, thymic differentiation, HIV receptor
Ligand/Receptor
MHC class II molecules, HIV gp120, IL-16
Cell Type
Dendritic cells, Macrophages, Monocytes, T cells, Thymocytes, Tregs
Biology Area
Immunology
Molecular Family
CD Molecules
Antigen References

1. Center D, et al. 1996. Immunol. Today 17:476.
2. Gaubin M, et al. 1996. Eur. J. Clin. Chem. Clin. Biochem. 34:723.

Gene ID
920 View all products for this Gene ID
UniProt
View information about CD4 on UniProt.org

Related FAQs

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.
What is the F/P ratio range of our BV421™ format antibody reagents?

It is lot-specific. On average it ranges between 2-4.

Go To Top Version: 4    Revision Date: 01/22/2021

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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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