CD4 Antibody (RPA-T4) - Azide and BSA Free

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-25199

Clone RPA-T4 was used by HLDA to establish CD designation.
Novus Biologicals, part of Bio-Techne

Key Product Details

Species Reactivity

Validated:

Human

Cited:

Human

Applications

Validated:

Block/Neutralize, CyTOF-ready, Flow Cytometry, Immunohistochemistry, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin (Negative), In vitro assay

Cited:

Flow Cytometry, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry-Frozen, In vitro assay

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 kappa Clone # RPA-T4

Format

Azide and BSA Free

Concentration

1 mg/ml

View all CD4 Antibodies »

Product Specifications

Immunogen

PHA-stimulated human PBMC.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1 kappa

Scientific Data Images for CD4 Antibody (RPA-T4) - Azide and BSA Free

Flow Cytometry: CD4 Antibody (RPA-T4) - Azide and BSA Free [NBP2-25199]

Flow Cytometry: CD4 Antibody (RPA-T4) - Azide and BSA Free [NBP2-25199]

Flow Cytometry: CD4 Antibody (RPA-T4) [NBP2-25199] - Analysis using the Alexa Fluor (R) 700 conjugate of NBP2-27216. Staining of human PBMC. Image from verified customer review.
Flow Cytometry: CD4 Antibody (RPA-T4) - Azide and BSA Free [NBP2-25199]

Flow Cytometry: CD4 Antibody (RPA-T4) - Azide and BSA Free [NBP2-25199]

Flow Cytometry: CD4 Antibody (RPA-T4) [NBP2-25199] - Analysis using the PE conjugate of NBP2-27216. Staining of CD4 in human PBMC using anti-CD4 antibody. Image from verified customer review.
Flow Cytometry: CD4 Antibody (RPA-T4) - Azide and BSA Free [NBP2-25199]

Flow Cytometry: CD4 Antibody (RPA-T4) - Azide and BSA Free [NBP2-25199]

Flow Cytometry: CD4 Antibody (RPA-T4) [NBP2-25199] - Analysis using the FITC conjugate of NBP2-27216. Staining of CD4 in 1x10^6 human PBMC using 10 ul (0.1 ug) of was used to test this product. Propidium iodide negative lymphocyte population gated for analysis. Image using the Azide Free format of this antibody.
View 4 more images

Applications for CD4 Antibody (RPA-T4) - Azide and BSA Free

Application
Recommended Usage

Immunohistochemistry

1:10-1:500

Immunohistochemistry-Frozen

1:10-1:500

In vitro assay

reported in multiple pieces of scientific literature
Application Notes
RPA-T4 is capable of blocking HIV-1, gp120, and inhibits syncytium formation. The RPA-T4 clone reacts with CD4, a 59 kDa single-chain transmembrane glycoprotein [receptor for human HIV virus] present on T-helper/inducer cell populations. This antibody binds to the D1 domain of CDR1 and CDR3 epitopes. The CD4 antigen and reacts with approvimately 80% of thymocytes and 45% of peripheral blood lymphocytes. CD4 is also present in low density on peripheral blood monocytes. Clone RPA-T4 is widely published in literature, see Knapp W, Dorken B, Rieber E P, et all, ed. Also see Schlossman SF, Boumsell L, Gilks W, et al, ed..
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Reviewed Applications

Read 1 review rated 4 using NBP2-25199 in the following applications:

Formulation, Preparation, and Storage

Purification

Protein G purified

Formulation

PBS

Format

Azide and BSA Free

Preservative

No Preservative

Concentration

1 mg/ml

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: CD4

CD4 (cluster of differentiation 4), also known as L3T4 or T4, is a 55 kDa single chain type I transmembrane glycoprotein belonging to the immunoglobin (Ig) superfamily. CD4 is predominantly expressed on most thymocytes, a subset of mature T lymphocytes, and weakly on monocytes, tissue macrophages, dendritic cells, and granulocytes. It is also expressed on neurons and glial cells in the brain (1). 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. CD4+ SP cells (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 (2). The extracellular region of CD4 consists of 372 amino acids (aa) with four immunoglobin-like domains (D1-D4). The structures of D1 and D3 resemble variable (IgV) domains while D2 and D4 resemble constant (IgC) domains (3).

Given its critical role in T cell development, CD4 also has diverse immunology-related functions. CD4 acts as a coreceptor with the T-cell receptor (TCR) during T cell activation and thymic differentiation by binding directly to major histocompatibility complex (MHC) class II antigens and associating with the protein tyrosine kinase, Lck (4). This interaction contributes to the formation of the immunological synapse (5). Defects in antigen presentation cause dysfunction of CD4+ T cells and the almost complete loss of MHC II expression on B cells in peripheral blood, as observed in severe combined immunodeficiency (SCID) (6). CD4 also functions as a receptor for the human immunodeficiency virus (HIV) by binding to gp120, the envelope glycoprotein of HIV-1. It has been shown that the V-like domains are critical for binding to gp120 (7). In immune mediated and infectious diseases of the central nervous system, CD4 functions as an indirect mediator of neuronal damage (8).

References

1. Omri, B., Crisanti, P., Alliot, F., Marty, M., Rutin, J., Levallois, C., . . . Pessac, B. (1994). CD4 expression in neurons of the central nervous system. International Immunology, 6(3), 377-385. doi:10.1093/intimm/6.3.377

2. Wan, Y. Y., & Flavell, R. A. (2009). How diverse-CD4 effector T cells and their functions. Journal of Molecular Cell Biology, 1(1), 20-36. doi:10.1093/jmcb/mjp001

3. Wu, H., Myszka, D. G., Tendian, S. W., Brouillette, C. G., Sweet, R. W., Chaiken, I. M., & Hendrickson, W. A. (1996). Kinetic and structural analysis of mutant CD4 receptors that are defective in HIV gp120 binding. Proceedings of the National Academy of Sciences, 93(26), 15030-15035. doi:10.1073/pnas.93.26.15030

4. Doyle, C., & Strominger, J. L. (1987). Interaction between CD4 and class II MHC molecules mediates cell adhesion. Nature, 330, 256-259. doi:10.1038/330256a0

5. Vignali, D. A. (2010). CD4 on the road to coreceptor status. The Journal of Immunology, 184(11), 5933-5934. doi:10.4049/jimmunol.1090037

6. Tasher, D., & Dalal, I. (2012). The genetic basis of severe combined immunodeficiency and its variants. The Application of Clinical Genetics, 5, 67-80. doi:10.2147/tacg.s18693

7. Arthos, J., Deen, K. C., Chaikin, M. A., Fornwald, J. A., Sathe, G., Sattentau, Q. J., . . . Sweet, R. W. (1989). Identification of the residues in human CD4 critical for the binding of HIV. Cell, 57(3), 469-481. doi:10.1016/0092-8674(89)90922-7

8. Buttini, M., Westland, C. E., Masliah, E., Yafeh, A. M., Wyss-Coray, T., Mucke, L. (1998). Novel role of human cd4 molecule identified in neurodegeneration. Nature Medicine, 4(4), 441-446. doi:10.1038/nm0498-441

Alternate Names

CD4

Gene Symbol

CD4

UniProt

NP_000607

Additional CD4 Products

Product Documents for CD4 Antibody (RPA-T4) - Azide and BSA Free

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Download SDS

Product Specific Notices for CD4 Antibody (RPA-T4) - Azide and BSA Free

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Privacy and Cookie Policy
Site Map
© Copyright 2024 Bio-Techne. All Rights Reserved.