IL-2 Antibody [Alexa Fluor® 350]

• Reactivity: Bv
• Applications: WB, 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 bovine IL‑2
  Ala21-Thr155
  Accession # P05016
• Specificity: Detects bovine IL-2 in ELISAs and Western blots. In sandwich immunoassays, less than 0.2% cross-reactivity with recombinant human IL-2, recombinant mouse IL-2, recombinant rat IL-2, recombinant feline IL-2, recombinant canine
• 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
  • 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

Bovine Interleukin-2 (IL-2) is a 15 kDa, alpha -helical, single chain, potentially glycosylated polypeptide that has potent stimulatory activity for antigen-activated T cells (1‑5). The molecule is synthesized as a 155 amino acid (aa) precursor that contains a 20 aa signal peptide plus a 135 aa mature segment that is possibly O‑glycosylated (4, 5). The mature region has multiple alpha -helices and one intrachain disulfide bond. Mature bovine IL-2 is 64%, 60%, 49%, 50%, 72%, 63% and 67% to mature human, canine, mouse, rat, porcine, equine, and feline 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 receptor for IL-2 is complex and consists of three distinct subunits in varying combinations (6, 7). Two of these are ligand-binding and are termed IL-2 R alpha and IL-2 R beta . IL-2 R alpha is 55 kDa and binds IL-2 with low affinity. IL-2 R beta is 75 kDa and binds IL-2 with intermediate affinity. Signal transduction is performed by both IL-2 R beta and a 64 kDa common gamma chain ( gamma _c). This signal transducing common gamma chain does not bind IL-2, but does heterodimerize with IL-2 R beta to form a functional IL-2 receptor. The complex heterotrimeric alpha -beta -gamma c receptor may arise from IL-2 binding to preformed R alpha -R beta  complexes (8). Functionally, IL-2 is best known for its autocrine and paracrine activity on T cells. It drives resting T cells into active G1, inducing IL-2 and IL-2 R alpha synthesis and cell proliferation (7). It also promotes Fas-induced death of naïve CD4⁺ T cells, while having minimal effect on activated CD4⁺ memory lymphocytes. Finally, IL-2 seems to play a central role in the expansion and maintenance of CD4⁺ CD25⁺ regulatory T cells. Thus, IL-2 may be a key cytokine in the natural suppression of autoimmunity (9, 10).

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.