Human CD6 Antibody

  
  • Species Reactivity
    Human
  • Specificity
    Detects recombinant human CD6 in direct ELISAs and Western blots.
  • Source
    Polyclonal Goat IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    Mouse myeloma cell line NS0-derived recombinant human CD6
    His18-Glu398
    Accession # Q8WWJ7
  • 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.
  • Endotoxin Level
    <0.10 EU per 1 μg of the antibody by the LAL method.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    0.1 µg/mL
    Recombinant Human CD6 Fc Chimera (Catalog # 627-CD)
  • Flow Cytometry
    2.5 µg/106 cells
    See below
  • Adhesion Blockade
    The adhesion of HuT 78 human cutaneous T cell lymphoma cells (5 x 104 cells/well) to immobilized Recombinant Human CD6 Fc Chimera (Catalog # 627-CD, 10 µg/mL, 100 µL/well) was maximally inhibited (80-100%) by 50 µg/mL of the antibody.
  • CyTOF-ready
    Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
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 CD6 in Human PBL by Flow Cytometry. Human peripheral blood lymphocytes were stained with Goat Anti-Human CD6 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF627, filled histogram) or control antibody (Catalog # AB-108-C, open histogram), followed by Fluorescein-conjugated Anti-Goat IgG Secondary Antibody (Catalog # F0109).
Preparation and Storage
  • Reconstitution
    Reconstitute at 0.2 mg/mL in sterile PBS.
  • 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: CD6

CD6 is a member of the group B scavenger receptor cysteine-rich (SRCR) superfamily. CD6 is a type I membrane glycoprotein and contains three extracellular SRCR domains. CD6 is expressed at low levels on immature thymocytes and at high levels on mature thymocytes. The majority of peripheral blood T cells, a subset of B cells, and a subset of neuronal cells express CD6. CD6 is a 668 amino acid protein with a 24 amino acid predicted signal sequence, a 374 amino acid extracellular domain, and a 244 amino acid transmembrane region. The 626 amino acid murine homolog has also been identified. The human and murine proteins share 70% amino acid identity over their full-lengths.

The role of CD6 has not been fully elucidated. However, it appears to play a role as both a co-stimulatory molecule in T cell activation and as an adhesion receptor. Studies demonstrating a mitogenic effect for T cells with some CD6 specific monoclonal antibodies, in conjunction with either accessory cells or PMA and anti-CD2 mAb, support the concept of CD6 as a co-stimulatory molecule. Anti-CD6 monoclonal antibody has been used as an immunosuppressive agent for patients undergoing kidney or bone marrow allograft rejection. It has also been used to remove CD6+ T cells from donor bone marrow prior to allogeneic bone marrow transplantation. Other studies have demonstrated an adhesive role for CD6, it has been demonstrated to bind the activated leukocyte cell adhesion molecule (ALCAM, CD166). CD6/ALCAM interactions have been postulated to play a role in thymocyte development. The presence of ALCAM on neuronal cells may provide a mechanism of interaction between CD6+ T cells and ALCAM+ neuronal cells. Phosphorylation of the CD6 molecule appears to play a role in CD6-mediated signal transduction. Serine and threonine residues become hyperphosphorylated and tyrosine residues become phosphorylated when T cells are activated with anti-CD6 mAb in conjunction with PMA, anti-CD2, or anti-CD3 mAb. The CD6 intracellular domain contains regions that can interact with SH2 or SH3 containing proteins. However, the signaling pathways have not been elucidated.

  • References:
    1. Gangemi, R.M. et al. (1989) J. Immunol. 143:2439.
    2. Aruffo, A. et al. (1991) J. Exp. Med. 174:949.
    3. Swack, J.A. et al. (1991) J. Biol. Chem. 266:7137.
    4. Robinson, W.H. et al. (1995) Eur. J. Immunol. 25:2765.
    5. Whitney, G. et al. (1995) Mol. Immunol. 32:89.
    6. Starling, G.C. et al. (1996) Eur. J. Immunol. 26:738.
    7. Degen, W.G. et al. (1998) Am. J. Pathol. 152:805.
    8. Swack, J.A. et al. (1989) Mol. Immunol. 26:1037.
    9. Pawelec, G. and H.J. Buhring (1991) Hum. Immunol. 31:165.
    10. Osorio, L.M. et al. (1995) Cell Immunol. 166:44.
    11. Robinson, W.H. et al. (1995) J. Immunol. 155:4739.
    12. Singer, N.G. et al. (1996) Immunology 88:537.
    13. Aruffo, A. et al. (1997) Immunol. Today 18:498.
  • Entrez Gene IDs:
    923 (Human); 12511 (Mouse)
  • Alternate Names:
    CD6 antigenFLJ44171; CD6 molecule; CD6; T12; Tp120; TP120T-cell differentiation antigen CD6
Related Research Areas
Isotype Controls
Description Application Cat# Citations Images  

Normal Goat IgG Control

Ctrl AB-108-C 191  
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Secondary Antibodies
Description Application Cat# Citations Images  

Goat IgG HRP-conjugated Antibody

WB, Simple Western HAF109 19  
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Goat IgG HRP-conjugated Antibody

WB HAF017 15  
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Goat IgG (H+L) PE-conjugated Antibody

Flow F0107 4  
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Donkey Anti-Goat IgG NorthernLights™ NL557-conjugated Antibody

Flow, IHC, ICC NL001 9
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Donkey Anti-Goat IgG NorthernLights™ NL493-conjugated Antibody

Flow, IHC, ICC NL003 5
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Goat IgG (H+L) APC-conjugated Antibody

Flow F0108 6  
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Goat IgG Horseradish Peroxidase-conjugated Antibody

WB HAF019 6  
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Donkey Anti-Goat IgG Antibody

WB AF109 6
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Donkey Anti-Goat IgG Biotinylated Antibody

WB BAF109 3
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Goat IgG VisUCyte HRP Polymer

IHC VC004  
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Goat IgG (H+L) Fluorescein-conjugated Antibody

Flow F0109 2  
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Donkey Anti-Goat IgG NorthernLights™ NL637-conjugated Antibody

Flow, IHC, ICC NL002
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Rabbit Anti-Goat IgG (H+L) Affinity Purified PAb, X Absorbed

WB, ELISA R-401-C-ABS
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Chicken Anti-Goat IgG Biotinylated Antibody

WB BAF019
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Rabbit Anti-Goat IgG Biotinylated Antibody

WB BAF017
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Donkey Anti-Goat IgG (H+L) PerCP-conjugated Antibody

Flow F0124
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