IL-2 Antibody [Alexa Fluor® 350]

• Reactivity: Fe
• Applications: WB, B/N, ELISA(Cap), ELISA(Det), ICC/IF
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Alexa Fluor 350

IL-2 Antibody [Alexa Fluor® 350] Summary

• Immunogen: E. coli-derived recombinant feline IL‑2
  Ala21-Thr154 (Cys146Ser)
  Accession # Q07885
• Specificity: Detects feline IL‑2 in ELISAs and Western blots. In sandwich immunoassays, approximately 3% cross-reactivity with recombinant canine IL-2 is observed, approximately 1% cross reactivity with recombinant human IL-2 and recombinant porcine IL-2 is obser
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • ELISA Capture (Matched Antibody Pair)
  • ELISA Detection (Matched Antibody Pair)
  • Immunocytochemistry
  • Neutralization
  • Western Blot

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for IL-2 Antibody [Alexa Fluor® 350]

• Aldesleukin
• IL2
• IL-2
• IL-2lymphokine
• interleukin 2
• interleukin-2
• involved in regulation of T-cell clonal expansion
• Proleukin
• T cell growth factor
• T-cell growth factor
• TCGF

Background

Interleukin-2 (IL-2) is a secreted, single chain alpha -helical polypeptide that has potent stimulatory activity for antigen-activated T cells. The feline IL-2 gene encodes a 154 amino acid (aa) precursor protein with a 20 aa signal peptide plus a 134 aa mature segment. There are suggestions that the mature protein may be
O‑glycosylated. At the aa sequence level, mature feline IL-2 is 78%, 82%, 60%, 64%, 62%, 75%, 62%, and 76% identical to mature human, canine, mouse, rat, cotton rat, porcine, goat, and equine IL-2, respectively. Mammalian cells known to express IL-2 include CD4⁺ and CD8⁺ T cells, visceral smooth muscle cells, eosinophils, gamma δ T cells, B cells and dendritic cells. The biological activity of IL-2 is mediated by IL-2 receptor complexes consisting of three distinct subunits ( alpha , beta , gamma ) in two combinations. The high-affinity signaling IL-2 receptor complex is a heterotrimer of the IL-2 receptor alpha , beta , gamma  subunits. The intermediate signaling complex is a heterodimer of the IL-2 R beta and gamma  subunits. The non-ligand binding   gamma  subunit, referred to as the common gamma  subunit ( gamma _c), is also a subunit of the receptor complexes of IL-4, IL-7, IL-9 and IL-15. Functionally, IL-2 is best known for its autocrine and paracrine activity on T cells. On naïve CD8⁺ T cells, high IL-2 levels can induce cell proliferation with a bias towards cytotoxicity. In the presence of low levels of IL-2, CD8⁺ T cells preferentially undergo apoptosis with a bias towards cytokine secretion. IL-2 also seems to play a central role in the expansion and maintenance of CD4⁺ CD25⁺ regulatory T cells. This indicates IL-2 may be a key cytokine in the natural suppression of autoimmunity (1-9).

Limitations

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.