Rat CD4 Antibody

  
  • Species Reactivity
    Rat
  • Specificity
    Detects rat CD4 in direct ELISAs and Western blots. In direct ELISAs, no cross-reactivity with recombinant canine, cotton rat, feline, human, or mouse CD4 is observed.
  • Source
    Monoclonal Mouse IgG2B Clone # 743611
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    Mouse myeloma cell line NS0-derived recombinant rat CD4
    Lys28-Thr394
    Accession # P05540
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    0.2 µg/mL
    See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Detection of Rat CD4 by Western Blot. Western blot shows lysates of rat spleen tissue and rat CD4+ T Cells. PVDF membrane was probed with 0.2 µg/mL of Mouse Anti-Rat CD4 Monoclonal Antibody (Catalog # MAB6439) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). A specific band was detected for CD4 at approximately 55 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Preparation and Storage
  • Reconstitution
    Sterile PBS to a final concentration of 0.5 mg/mL.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: CD4

CD4, also known as L3T4, T4, and W3/25, is an approximately 55 kDa type I transmembrane glycoprotein that is expressed predominantly on thymocytes and a subset of mature T lymphocytes. It is a standard phenotype marker for the identification of T cell populations (1). Mature rat CD4 consists of a 367 amino acid (aa) extracellular region containing four immunoglobulin-like domains, a 23 aa transmembrane segment, and a 40 aa cytoplasmic domain (2). Within the ECD, rat CD4 shares 52% and 73% aa sequence identity with human and mouse CD4, respectively. CD4 is expressed along with CD8 on double positive T cells during their development in the thymus. Either CD4 or CD8 expression is then lost, giving rise to single positive (SP) CD4+ or CD8+ mature T cells (3). CD4+ SP cells, also known as T helper cells, further differentiate into multiple subsets of CD4+ cells including Th1, Th2, Th17, Tfh, and Treg cells which regulate humoral and cellular immunity (4). CD4 is re‑expressed on circulating CD8+ T cells upon activation and contributes to their cytotoxic effector activity (5). In the rat, CD4 is additionally expressed on macrophages and selected subsets of dendritic cells (6, 7). Similar CD4 distribution between species cannot be assumed as demonstrated by its presence on macrophages in human and rat but not in mouse (6). CD4 binds directly to MHC class II molecules on antigen presenting cells (8). This interaction contributes to the formation of the immunological synapse which is focused around the TCR-MHC class II-antigenic peptide interaction (1, 9). Palmitoylation of two cysteine residues in the cytoplasmic tail of CD4 promotes the localization of CD4 in lipid rafts and its ability to augment TCR signaling via activation of the tyrosine kinase Lck (10). CD4 also functions as a chemotactic receptor for IL-16 and, in human, as a co‑receptor for the gp120 surface glycoprotein of HIV-1 (11‑14). CD4 associates with CD44 on the cell surface to potentiate CD44-mediated cell adhesion (15).

  • References:
    1. Vignali, D.A.A. (2010) J. Immunol. 184:5933.
    2. Clark, S.J. et al. (1987) Proc. Natl. Acad. Sci. 84:1649.
    3. Alarcon, B. and H.M. van Santen (2010) Sci. Signal. 3:pe11.
    4. Wan, Y.Y. and R.A. Flavell (2009) Mol. Cell Biol. 1:20.
    5. Kitchen, S.G. et al. (2005) Proc. Natl. Acad. Sci. 102:3794.
    6. Crocker, P.R. et al. (1987) J. Exp. Med. 166:613.
    7. Liu, L. et al. (1998) J. Immunol. 161:1146.
    8. Doyle, C. and J.L. Strominger (1987) Nature 330:256.
    9. Huppa, J.B. et al. (2010) Nature 463:963.
    10. Fragoso, R. et al. (2003) J. Immunol. 170:913.
    11. Cruikshank, W.W. et al. (1994) Proc. Natl. Acad. Sci. 91:5109.
    12. Klatzmann, D. et al. (1984) Nature 312:767.
    13. Dagleish, A.G. et al. (1984) Nature 312:763.
    14. Biswas, P. et al. (2003) Blood 101:4452.
    15. Umberto D. et al. (1999) International Immunology 11:1085.
  • Entrez Gene IDs:
    920 (Human); 12504 (Mouse); 24932 (Rat); 403931 (Canine); 493775 (Feline)
  • Alternate Names:
    CD4 antigen (p55); CD4 antigen; CD4 molecule; CD4 receptor; CD4; CD4mut; T-cell surface antigen T4/Leu-3; T-cell surface glycoprotein CD4
Related Research Areas
Isotype Controls
Description Application Cat# Citations Images  

Mouse IgG2B Isotype Control

Ctrl MAB004 32  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG2B Isotype Control

Ctrl MAB0041 7  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG2B Isotype Control

Ctrl MAB0042 6
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....
Secondary Antibodies
Description Application Cat# Citations Images  

Mouse IgG HRP-conjugated Antibody

WB HAF007 26  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) PE-conjugated Antibody

Flow F0102B 10  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG NorthernLights™ NL557-conjugate Antibody

Flow, IHC, ICC NL007 9
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG Biotinylated Antibody

WB BAF018 1
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG HRP-conjugated Antibody

WB HAF018 9  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) APC-conjugated Antibody

Flow F0101B 2  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG NorthernLights™ NL637-conjugated Antibody

Flow, IHC, ICC NL008 8
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG NorthernLights™ NL493-conjugated Antibody

Flow, IHC, ICC NL009 5
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) Fluorescein-conjugated Antibody

Flow F0103B 5  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG Antibody

WB AF007 4
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Goat Anti-Mouse IgG Biotinylated Antibody

WB BAF007 4
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse/Rabbit IgG VisUCyte HRP Polymer Antibody

IHC VC002  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Rat Anti-Mouse IgG2B APC-conjugated Antibody

Flow F0133 1  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG VisUCyte HRP Polymer Antibody

IHC VC001  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) PerCP-conjugated Antibody

Flow F0114  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Goat Anti-Mouse IgG Fc Affinity Purified Polyclonal Ab

G-202-C 2
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Rat Anti-Mouse IgG2B Fluorescein-conjugated Antibody

Flow F0134 1
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Rat Anti-Mouse IgG2B PE-conjugated Antibody

Flow F0132  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG2B Antibody

Flow MAB0043  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Have you used Rat CD4 Antibody?

Submit a review and receive a $25US/€18/£15/$25CAN amazon gift card if you include an image - $10US/€7/£6/$10CAN Amazon card for reviews without an image. Limited to verified customers in USA, Canada and Europe.

Order Details

Contact Information

Calculators

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

=
÷
R&D Systems Guarantee

Monoclonal
Antibody
Panels For
Screening

Learn More
Monoclonal Antibodies

Feedback

Customer Information