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Purified anti-mouse CD4 Antibody

Pricing & Availability
Clone
GK1.5 (See other available formats)
Regulatory Status
RUO
Other Names
L3T4, T4
Isotype
Rat IgG2b, κ
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Product Citations
publications
GK1dot5_Pure_021706
BALB/c mouse splenocytes were stained with purified CD4 (clone GK1.5) (filled histogram) or rat IgG2b, κ isotype control (open histogram), followed by anti-rat IgG FITC.
  • GK1dot5_Pure_021706
    BALB/c mouse splenocytes were stained with purified CD4 (clone GK1.5) (filled histogram) or rat IgG2b, κ isotype control (open histogram), followed by anti-rat IgG FITC.
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100401 50 µg $24
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100402 500 µg $77
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Description

CD4 is a 55 kD protein also known as L3T4 or T4. It is a member of the Ig superfamily, primarily expressed on most thymocytes, a subset of T cells, and weakly on macrophages and dendritic cells. It acts as a coreceptor with the TCR during T cell activation and thymic differentiation by binding MHC class II and associating with the protein tyrosin kinase, lck.

Product Details
Technical data sheet

Product Details

Verified Reactivity
Mouse
Antibody Type
Monoclonal
Host Species
Rat
Immunogen
Mouse CTL clone V4
Formulation
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
Preparation
The antibody was purified by affinity chromatography.
Concentration
0.5 mg/ml
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C.
Application

FC - Quality tested
IHC-F, IP - Reported in the literature, not verified in house
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 ≤0.25 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.

Application Notes

Additional reported applications (for the relevant formats) include: blocking of CD4+ T cell activation1,4,11, thymocyte costimulation3, in vitro and in vivo depletion2,5-8, blocking of egg-sperm cell adhesion1,4, immunohistochemical staining of acetone-fixed frozen sections9,10, immunoprecipitation1,2, and spatial biology (IBEX)12,13. The GK1.5 antibody is able to block CD4 mediated cell adhesion and T cell activation. Binding of GK1.5 antibody to CD4 T cells can be blocked by RM4-5 antibody, but not RM4-4 antibody. For in vivo studies or highly sensitive assays, we recommend Ultra-LEAF™ purified antibody (Cat. No. 100442) with a lower endotoxin limit than standard LEAF™ purified antibodies (Endotoxin < 0.01 EU/µg).

Application References

(PubMed link indicates BioLegend citation)
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  2. Dialynas DP, et al. 1983. Immunol. Rev. 74:29. (IP, Deplete)
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  4. Godfrey DI, et al. 1994. J. Immunol. 152:4783. (Block)
  5. Gavett SH, et al. 1994. Am. J. Respir. Cell. Mol. Biol. 10:587. (Deplete)
  6. Schuyler M, et al. 1994. Am. J. Respir. Crit. Care Med. 149:1286. (Deplete)
  7. Ghobrial RR, et al. 1989. Clin. Immunol. Immunopathol. 52:486. (Deplete)
  8. Israelski DM, et al. 1989. J. Immunol. 142:954. (Deplete)
  9. Zheng B, et al. 1996. J. Exp. Med. 184:1083. (IHC)
  10. Frei K, et al. 1997. J. Exp. Med. 185:2177. (IHC)
  11. Felix NJ, et al. 2007. Nat. Immunol. 8:388. (Block)
  12. Radtke AJ, et al. 2020. Proc Natl Acad Sci U S A. 117:33455-65. (SB) PubMed
  13. Radtke AJ, et al. 2022. Nat Protoc. 17:378-401. (SB) PubMed
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RRID
AB_312686 (BioLegend Cat. No. 100401)
AB_312686 (BioLegend Cat. No. 100402)

Antigen Details

Structure
Ig superfamily, 55 kD
Distribution

Majority of thymocytes, T cell subset

Function
TCR co-receptor, T cell activation
Ligand/Receptor
MHC class II molecule
Cell Type
Dendritic cells, T cells, Thymocytes, Tregs
Biology Area
Immunology
Molecular Family
CD Molecules
Antigen References

1. Barclay A, et al. 1997. The Leukocyte Antigen FactsBook Academic Press.
2. Bierer BE, et al. 1989. Annu. Rev. Immunol. 7:579.
3. Janeway CA. 1992. Annu. Rev. Immunol. 10:645.

Gene ID
12504 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.

Other Formats

View All CD4 Reagents Request Custom Conjugation
Description Clone Applications
APC anti-mouse CD4 GK1.5 FC
Biotin anti-mouse CD4 GK1.5 FC,IHC-F,ICC
FITC anti-mouse CD4 GK1.5 FC,IHC-F,ICC
PE anti-mouse CD4 GK1.5 FC
PE/Cyanine5 anti-mouse CD4 GK1.5 FC
Purified anti-mouse CD4 GK1.5 FC,IHC-F,ICC,IP,Costim,Block,Depletion
PE/Cyanine7 anti-mouse CD4 GK1.5 FC
APC/Cyanine7 anti-mouse CD4 GK1.5 FC
Alexa Fluor® 647 anti-mouse CD4 GK1.5 FC,IHC-F,ICC
Alexa Fluor® 488 anti-mouse CD4 GK1.5 FC,IHC-F,ICC
Pacific Blue™ anti-mouse CD4 GK1.5 FC
Alexa Fluor® 700 anti-mouse CD4 GK1.5 FC
PerCP anti-mouse CD4 GK1.5 FC
PerCP/Cyanine5.5 anti-mouse CD4 GK1.5 FC
Brilliant Violet 421™ anti-mouse CD4 GK1.5 FC,ICC,IHC-F
Ultra-LEAF™ Purified anti-mouse CD4 GK1.5 FC,Block,Costim,Depletion,IHC,IP
Alexa Fluor® 594 anti-mouse CD4 GK1.5 IHC-F,FC,ICC,SB
Brilliant Violet 711™ anti-mouse CD4 GK1.5 FC
Brilliant Violet 510™ anti-mouse CD4 GK1.5 FC,IHC-F,ICC
Brilliant Violet 605™ anti-mouse CD4 GK1.5 FC
Brilliant Violet 785™ anti-mouse CD4 GK1.5 FC
PE/Dazzle™ 594 anti-mouse CD4 GK1.5 FC
APC/Fire™ 750 anti-mouse CD4 GK1.5 FC
GoInVivo™ Purified anti-mouse CD4 GK1.5 FC
Brilliant Violet 750™ anti-mouse CD4 GK1.5 FC
Brilliant Violet 650™ anti-mouse CD4 GK1.5 FC
Spark Blue™ 550 anti-mouse CD4 GK1.5 FC
Spark NIR™ 685 anti-mouse CD4 GK1.5 FC
KIRAVIA Blue 520™ anti-mouse CD4 GK1.5 FC
PE/Fire™ 640 anti-mouse CD4 GK1.5 FC
APC/Fire™ 810 anti-mouse CD4 GK1.5 FC
PE/Fire™ 700 anti-mouse CD4 GK1.5 FC
Spark Violet™ 538 anti-mouse CD4 GK1.5 FC
Spark YG™ 593 anti-mouse CD4 GK1.5 FC
Spark Blue™ 574 anti-mouse CD4 Antibody GK1.5 FC
Spark UV™ 387 anti-mouse CD4 GK1.5 FC
Spark Blue™ 515 anti-mouse CD4 GK1.5 FC
Spark PLUS UV395™ anti-mouse CD4 GK1.5 FC
Spark Red™ 718 anti-mouse CD4 (Flexi-Fluor™) GK1.5 FC
Go To Top Version: 1    Revision Date: 11/30/2012

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

 

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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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