Anti-CD4 Antibody

Cat: 60003-RP02
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Anti-CD4 Antibody (Rabbit Polyclonal antibody) General Information
Product name
Anti-CD4 Antibody
Validated applications
ELISA
Species reactivity
Reacts with: Ferret
Specificity
Ferret CD4
Immunogen
Recombinant Ferret CD4 protein (Catalog#60003-F08H)
Preparation
Produced in rabbits immunized with purified, recombinant Ferret CD4 (rF CD4; Catalog#60003-F08H; ABS50090.1; Met 1-Leu 401). CD4 specific IgG was purified by Ferret CD4 affinity chromatography.
Source
Polyclonal Rabbit IgG
Purification
Protein A & Antigen Affinity
Formulation
0.2 μm filtered solution in PBS
Conjugate
Unconjugated
Form
Liquid
Shipping
This antibody is shipped as liquid solution at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Storage
This antibody can be stored at 2℃-8℃ for one month without detectable loss of activity. Antibody products are stable for twelve months from date of receipt when stored at -20℃ to -80℃. Preservative-Free. Sodium azide is recommended to avoid contamination (final concentration 0.05%-0.1%). It is toxic to cells and should be disposed of properly. Avoid repeated freeze-thaw cycles.
Anti-CD4 Antibody (Rabbit Polyclonal antibody) Validated Applications
Application Dilution Notes
ELISA 1:5000-1:10000  

**********Please Note: Optimal concentrations/dilutions should be determined by the end user.**********

CD4 Background Information

T-cell surface glycoprotein CD4,  is a single-pass type I membrane protein. CD4 contains three Ig-like C2-type (immunoglobulin-like) domains and one Ig-like V-type (immunoglobulin-like) domain. CD4 is a glycoprotein expressed on the surface of T helper cells, regulatory T cells, monocytes, macrophages, and dendritic cells. The CD4 surface determinant, previously associated as a phenotypic marker for helper/inducer subsets of T lymphocytes, has now been critically identified as the binding/entry protein for human immunodeficiency viruses (HIV). The human CD4 molecule is readily detectable on monocytes, T lymphocytes, and brain tissues. All human tissue sources of CD4 bind radiolabeled gp120 to the same relative degree; however, the murine homologous protein, L3T4, does not bind the HIV envelope protein. CD4 is a co-receptor that assists the T cell receptor (TCR) to activate its T cell following an interaction with an antigen presenting cell. Using its portion that resides inside the T cell, CD4 amplifies the signal generated by the TCR. CD4 interacts directly with MHC class II molecules on the surface of the antigen presenting cell via its extracellular domain. The CD4 molecule is currently the object of intense interest and investigation both because of its role in normal T-cell function, and because of its role in HIV infection. CD4 is a primary receptor used by HIV-1 to gain entry into host T cells. HIV infection leads to a progressive reduction of the number of T cells possessing CD4 receptors.

Viral protein U (VpU) of HIV-1 plays an important role in downregulation of the main HIV-1 receptor CD4 from the surface of infected cells. Physical binding of VpU to newly synthesized CD4 in the endoplasmic reticulum is an early step in a pathway leading to proteasomal degradation of CD4. Amino acids in both helices found in the cytoplasmic region of VpU in membrane-mimicking detergent micelles experience chemical shift perturbations upon binding to CD4, whereas amino acids between the two helices and at the C-terminus of VpU show no or only small changes, respectively. Paramagnetic spin labels were attached at three sequence positions of a CD4 peptide comprising the transmembrane and cytosolic domains of the receptor. VpU binds to a membrane-proximal region in the cytoplasmic domain of CD4.

Full Name
CD4 molecule
References
  • Farrar WL, et al. (1988) Characterization of CD4 glycoprotein determinant-HIV envelope protein interactions: perspectives for analog and vaccine development. Crit Rev Immunol. 8(4): 315-39.
  • Biddison WE, et al. (1989) CD4 expression and function in HLA class II-specific T cells. Immunol Rev. 109: 5-15.
  • Singh SK, et al. (2012) Mapping the interaction between the cytoplasmic domains of HIV-1 viral protein U and human CD4 with NMR spectroscopy. FEBS J. 279(19):3705-14.
  • Product Description Host Clonality Application Catalog# (PDF)
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    Anti-CD4 Antibody Mouse Monoclonal ELISA 10400-MM25
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    Anti-CD4 Antibody (PE) Mouse Monoclonal FCM 10400-MM08-P
    Anti-CD4 Antibody (PerCP) Mouse Monoclonal FCM 10400-MM08-C
    Anti-CD4 Antibody Mouse Monoclonal IHC-P 10400-MM22
    Anti-CD4 Antibody Mouse Monoclonal FCM 10400-MM08
    Anti-CD4 Antibody Rabbit Monoclonal ELISA,IHC-P 10400-R113
    Anti-CD4 Antibody Rabbit Monoclonal WB,ELISA 10400-R104
    Anti-CD4 Antibody Rabbit Polyclonal ELISA 10400-RP01
    Anti-CD4 Antibody Mouse Monoclonal IHC-P 10400-MM23
    Anti-CD4 Antibody (APC) Mouse Monoclonal FCM 10400-MM08-A
    Anti-CD4 Antibody (FITC) Mouse Monoclonal FCM 10400-MM08-F
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