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Pacific Blue™ anti-human CD4 Antibody

Pricing & Availability
Clone
OKT4 (See other available formats)
Regulatory Status
RUO
Workshop
HCDM listed
Other Names
T4
Isotype
Mouse IgG2b, κ
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Product Citations
publications
OKT4_Blue_082109
Human peripheral blood lymphocytes stained with OKT4 Pacific Blue™
  • OKT4_Blue_082109
    Human peripheral blood lymphocytes stained with OKT4 Pacific Blue™
Compare all formats See Pacific Blue™ spectral data
Cat # Size Price Quantity Check Availability Save
317423 25 µg 124 CHF
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317429 100 tests 264 CHF
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317424 100 µg 265 CHF
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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 (pdf)

Product Details

Verified Reactivity
Human, Cynomolgus, Rhesus
Reported Reactivity
Chimpanzee
Antibody Type
Monoclonal
Host Species
Mouse
Immunogen
Human peripheral T cells
Formulation
test size: Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and BSA (origin USA).
µg sizes: Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
Preparation
The antibody was purified by affinity chromatography, and conjugated with Pacific Blue™ under optimal conditions.
Concentration
µg sizes: 0.5 mg/mL
test sizes: 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
Recommended Usage

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis.
For test size, the suggested use of this reagent for immunofluorescent staining is 5 µl per million cells in 100 µl staining volume or 5 µl per 100 µl of whole blood.
For µg sizes, the suggested use of this reagent for immunofluorescent staining is ≤2.0 µg per 106 cells in 100 µl volume or 100 µl of whole blood.
It is highly recommended that the reagent be titrated for optimal performance for each application.

* Pacific Blue™ has a maximum emission of 455 nm when it is excited at 405 nm. Prior to using Pacific Blue™ conjugate for flow cytometric analysis, please verify your flow cytometer's capability of exciting and detecting the fluorochrome.


Alexa Fluor® and Pacific Blue™ are trademarks of Life Technologies Corporation.

View full statement regarding label licenses
Excitation Laser
Violet Laser (405 nm)
Application Notes

The OKT4 antibody binds to the D3 domain of CD4 and does not block HIV binding. Additional reported applications (for the relevant formats) include: immunohistochemistry of frozen sections and blocking of T cell activation. 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. 317453 and 317454).

In a small subset of individuals, the OKT4 clone does not bind to CD4 due to polymorphisms in CD4.9

Application References

(PubMed link indicates BioLegend citation)
  1. Knapp W, et al. 1989. Leucocyte Typing IV. Oxford University Press. New York.
  2. Reinherz EL, et al. 1979. Proc. Natl. Acad. Sci. 76:4061.
  3. Kmieciak M, et al. 2009. J. Transl. Med. 7:89. (FC) PubMed
  4. Cicin-Sain L, et al. 2010. J. Immunol. 184:6739. PubMed
  5. Rosenzweig M, et al. 2001. J. Med. Primatol. 30:36.
  6. Linder J, et al. 1987. Am. J. Pathol. 127:1.
  7. Boche D, et al. 1999. J. Neurovirol. 5:232. (IHC)
  8. Reinherz EL, et al. 1979. Proc. Natl. Acad. Sci. USA. 76:4061. (Immunogen)
  9. Lederman S, et al. 1991. Mol Immunol. 28:1171-81.
Product Citations
  1. XP H, et al. 2015. Nat Commun. 6: 8020. PubMed
  2. Tew G, et al. 2016. Gastroenterology. 150:477-487. PubMed
  3. Metelo AM, et al. 2022. Cancer Res Commun. 2:158. PubMed
  4. Zhu W, et al. 2021. Onco Targets Ther. 14:2149. PubMed
  5. Wijesinghe A, et al. 2020. J Biomed Sci. 27:50:00. PubMed
  6. Causi E, et al. 2015. PLoS One. 10: 0136717. PubMed
  7. Estes J, et al. 2015. J Infect Dis. 211:744. PubMed
  8. Wang J, et al. 2020. Cell. 183:1264. PubMed
  9. Eckard AR, et al. 2017. Antivir Ther. 1.177083333. PubMed
  10. Wu G, et al. 2021. Front Microbiol. 12:636703. PubMed
  11. McGary C, et al. 2014. J Virol. 88:4533. PubMed
  12. Eckard AR, et al. 2017. Antivir Ther. 1.38125. PubMed
  13. Theobald SJ, et al. 2022. EMBO Mol Med. 14:e15888. PubMed
  14. Chulpanova DS, et al. 2021. Biology (Basel). 10:. PubMed
  15. Fang F, et al. 2021. Cell Rep. 37:109981. PubMed
  16. Turaj AH et al. 2017. Cancer cell. 32(6):777-791 . PubMed
  17. Hasenkrug KJ, et al. 2021. MBio. 12:e0150321. PubMed
  18. Duque JSR, et al. 2022. Nat Commun. 13:3700. PubMed
  19. Ji C, et al. 2009. J Biol Chem. 284:5175. PubMed
  20. Rnjak D, et al. 2021. Transfus Clin Biol. . PubMed
  21. Tabb B, et al. 2012. J Infect Dis. 207:880. PubMed
  22. Robert R, et al. 2017. PLoS One. 10.1371/journal.pone.0184278. PubMed
  23. Xie CB, et al. 2020. J Clin Invest. 130:3437. PubMed
  24. Wang S, et al. 2022. Cancer Immunol Immunother. Online ahead of print. PubMed
  25. Chowdhury A, et al. 2015. J Virol. 89: 8677-8686. PubMed
RRID
AB_571953 (BioLegend Cat. No. 317423)
AB_571953 (BioLegend Cat. No. 317429)
AB_571953 (BioLegend Cat. No. 317424)

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
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.
Go To Top Version: 4    Revision Date: 07.13.2015

For Research Use Only. Not for diagnostic or therapeutic use.

 

This product is supplied subject to the terms and conditions, including the limited license, located at www.biolegend.com/terms) ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.

 

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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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