Human CD5 Antibody

(1 citations)   
  • Species Reactivity
    Human
  • Specificity
    Detects human CD5 in direct ELISAs and Western blots.
  • Source
    Polyclonal Goat IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    Mouse myeloma cell line NS0-derived recombinant human CD5
    Arg25-Asn371
    Accession # P06127
  • 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
    0.5 µg/mL
    See below
  • Simple Western
    10 µg/mL
    See below
  • Flow Cytometry
    0.25 µg/106 cells
    Human whole blood lymphocytes
  • Agonist Activity
    2-8 µg/mL
    See below
  • CyTOF-ready
    Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
  • Immunocytochemistry
    5-15 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 Human CD5 by Western Blot. Western blot shows lysates of Jurkat human acute T cell leukemia cell line and CEM human T-lymphoblastoid cell line. PVDF membrane was probed with 0.5 µg/mL of Goat Anti-Human CD5 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1636) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for CD5 at approximately 67 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Human CD5 Antibody Enhances IL-2 Secretion in Human T Cells. Human CD5 Antigen Affinity-purified Polyclonal Antibody enhances IL-2 secretion in human T cells in the presence of sub-optimal amounts of Human CD3 epsilon  Monoclonal Antibody (Catalog # MAB100) and Human CD28 Monoclonal Antibody (Catalog # MAB342), in a dose-dependent manner, as measured using the Quantikine Human IL-2 ELISA Kit (Catalog # D2050). The ED50 for this effect is typically 2‑8 μg/mL.
Immunocytochemistry
CD5 in Human PBMCs. CD5 was detected in immersion fixed human peripheral blood mononuclear cells (PBMCs) using Goat Anti-Human CD5 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1636) at 5 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). Specific staining was localized to cell surfaces. View our protocol for Fluorescent ICC Staining of Non-adherent Cells.
Detection of Human CD5 by Simple WesternTM. Simple Western lane view shows lysates of CEM human
T-lymphoblastoid cell line, loaded at 0.2 mg/mL. A specific band was detected for CD5 at approximately 93 kDa (as indicated) using 10 µg/mL of Goat Anti-Human CD5 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1636). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system.
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: CD5

CD5, also known as Leu-1, is a type I transmembrane protein belonging to the scavenger receptor cysteine-rich (SRCR) superfamily. It is expressed on thymocytes, T cells and the B1a subpopulation of B cells. CD5 binds the C-type lectin, CD72, and modulates signaling through the antigen receptors on T and B cells. CD5 has been shown to provide either positive or negative co-stimulatory signals depending on cell type to regulate immune responses.

  • References:
    1. Ledbetter, J.A. et al. 1985, J. Immunol. 135:2331.
    2. Damle, N.K. et al. 1988, J. Immunol. 140:1753.
  • Entrez Gene IDs:
    921 (Human); 12507 (Mouse)
  • Alternate Names:
    CD5 antigen (p56-62); CD5 antigen; CD5 molecule; CD5; LEU1T-cell surface glycoprotein CD5; Lymphocyte antigen T1/Leu-1; T1
Related Research Areas
Citations:

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citations: Showing 1 - 1

  1. Unique cell surface expression of receptor tyrosine kinase ROR1 in human B-cell chronic lymphocytic leukemia.
    Authors: Baskar S, Kwong KY, Hofer T, Levy JM, Kennedy MG, Lee E, Staudt LM, Wilson WH, Wiestner A, Rader C
    Clin. Cancer Res., 2008;14(2):396-404.
    Species: Human
    Sample Type: Whole Cells
    Application: Flow
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