Bovine IL-2 Biotinylated Antibody

Catalog # Availability Size / Price Qty
Product Details
Supplemental Products

Bovine IL-2 Biotinylated Antibody Summary

Species Reactivity
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 IL-2, recombinant equine IL-2, recombinant cotton rat IL-2, and recombinant porcine IL-2 is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
E. coli-derived recombinant bovine IL‑2
Accession # P05016
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Bovine IL‑2 (Catalog # 2465-BL)

Bovine IL-2 Sandwich Immunoassay

Recommended Concentration
ELISA Detection (Matched Antibody Pair)
0.1-0.4 µg/mL 

Use in combination with:

Capture Reagent: Bovine IL‑2 Antibody (Catalog # AF2465)

Standard: Recombinant Bovine IL-2 Protein (Catalog # 2465-BL)

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.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
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: IL-2

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).

  1. Smith, K.A. (1992) Curr. Opin. Immunol. 4:271.
  2. Smith, K.A. (1988) Science 240:1169.
  3. Waldmann, T.A. et al. (2001) Immunity 14:105.
  4. Cerretti, D.P. et al. (1986) Proc. Natl. Acad. Sci. USA 83:3223.
  5. Reeves, R. et al. (1986) Proc. Natl. Acad. Sci. USA 83:3228.
  6. Ellery, J.M. and P.J. Nicholls (2002) Cytokine Growth Factor Rev. 13:27.
  7. Nelson, B.H. and D.M. Willerford (1998) Adv. Immunol. 70:1.
  8. Liparoto, S.F. et al. (2002) Biochemistry 41:2543.
  9. Jaleco, S. et al. (2003) J. Immunol. 171:61.
  10. Malek, T.R. (2003) J. Leukoc. Biol. 74:961.
Long Name
Interleukin 2
Entrez Gene IDs
3558 (Human); 16183 (Mouse); 116562 (Rat); 396868 (Porcine); 280822 (Bovine); 403989 (Canine); 100034204 (Equine); 751114 (Feline); 100302458 (Rabbit)
Alternate Names
Aldesleukin; IL2; IL-2; IL-2lymphokine; interleukin 2; interleukin-2; involved in regulation of T-cell clonal expansion; T cell growth factor; T-cell growth factor; TCGF

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