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human CD4 Antibody

Purified Mouse Monoclonal Antibody (Mab)

     
  • 4 - human CD4 Antibody AM8658b
    Overlay histogram showing huuman peripheral blood lymphocytes stained with CD4 antibody(green line). The cells were icubated in 2% bovine serum albumin to block non-specific protein-protein interactions followed by the antibody (1:50 dilution) for 60min at 37ºC. The secondary antibody used was Goat Anti-Mouse IgG, DyLight® 488 Conjugated Highly Cross-Adsorbed(OJ192088) at 1/200 dilution for 40min at 37ºC. Isotype control antibody (blue line) was mouse IgG2b (1μg/1x10^6 cells) used under the same conditions. Acquisition of >10, 000 events was performed.
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Product info
Application
  • Applications Legend:
  • E=ELISA
  • WB=Western Blotting
  • IHC=Immunohistochemistry
  • IHC-P=Immunohistochemistry (Paraffin)
  • IP=Immunoprecipitation
  • IF=Immunofluorescence
  • IC=Immunochemistry
  • ICC=Immunocytochemistry
  • FC=Flow Cytometry
  • DB=Dot Blot
FC, E
Primary Accession P01730
Reactivity Human
Host Mouse
Clonality monoclonal
Isotype IgG2b
Clone Names OKT4 Equivalent
Calculated MW 51111 Da
Additional info
Gene ID 920
Other Names T-cell surface glycoprotein CD4, T-cell surface antigen T4/Leu-3, CD4, CD4
Dilution FC~~1:50
StorageMaintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
Precautionshuman CD4 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.
Protein Information
Name CD4
Function Integral membrane glycoprotein that plays an essential role in the immune response and serves multiple functions in responses against both external and internal offenses. In T-cells, functions primarily as a coreceptor for MHC class II molecule:peptide complex. The antigens presented by class II peptides are derived from extracellular proteins while class I peptides are derived from cytosolic proteins. Interacts simultaneously with the T-cell receptor (TCR) and the MHC class II presented by antigen presenting cells (APCs). In turn, recruits the Src kinase LCK to the vicinity of the TCR-CD3 complex. LCK then initiates different intracellular signaling pathways by phosphorylating various substrates ultimately leading to lymphokine production, motility, adhesion and activation of T- helper cells. In other cells such as macrophages or NK cells, plays a role in differentiation/activation, cytokine expression and cell migration in a TCR/LCK-independent pathway. Participates in the development of T-helper cells in the thymus and triggers the differentiation of monocytes into functional mature macrophages.
Cellular Location Cell membrane; Single-pass type I membrane protein. Note=Localizes to lipid rafts (PubMed:12517957, PubMed:9168119). Removed from plasma membrane by HIV-1 Nef protein that increases clathrin-dependent endocytosis of this antigen to target it to lysosomal degradation. Cell surface expression is also down-modulated by HIV-1 Envelope polyprotein gp160 that interacts with, and sequesters CD4 in the endoplasmic reticulum
Tissue Location Highly expressed in T-helper cells. The presence of CD4 is a hallmark of T-helper cells which are specialized in the activation and growth of cytotoxic T-cells, regulation of B cells, or activation of phagocytes. CD4 is also present in other immune cells such as macrophages, dendritic cells or NK cells.
Research Areas

BACKGROUND

Accessory protein for MHC class-II antigen/T-cell receptor interaction. May regulate T-cell activation. Induces the aggregation of lipid rafts.

REFERENCES

Maddon P.J.,et al.Cell 42:93-104(1985).
Littman D.R.,et al.Cell 55:541-541(1988).
Ansari-Lari M.A.,et al.Genome Res. 6:314-326(1996).
Ansari-Lari M.A.,et al.Genome Res. 7:268-280(1997).
Hodge T.W.,et al.Hum. Immunol. 30:99-104(1991).

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