IL-4 Antibody [Biotin]

• Reactivity: Eq
• Applications: WB, ELISA(Det)
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Biotin
• Concentration: LYOPH

IL-4 Antibody [Biotin] Summary

• Immunogen: E. coli-derived recombinant equine IL‑4
  Lys26-Cys137
  Accession # NP_001075988
• Specificity: Detects equine IL-4 in ELISAs and Western blots. In sandwich immunoassays, less than 0.07% cross-reactivity is observed with recombinant human IL-4, recombinant mouse IL-4, recombinant rat IL-4, recombinant cotton rat IL-4, recombinant canine IL-4, recombinant feline IL-4, recombinant porcine IL-4, recombinant bovine IL-4, and recombinant rhesus macaque IL-4 is observed.
• Source: N/A
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Gene: IL4
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • ELISA Capture (Matched Antibody Pair) 0.2-0.8 ug/mL
  • ELISA Detection (Matched Antibody Pair) 0.1-0.4 ug/mL
  • ELISA Standard (Matched Pair)
  • Western Blot 0.1 ug/mL
• Application Notes: ELISA Capture: Equine IL-4 Antibody (Catalog # AF1809)
  Standard: Recombinant Equine IL-4 (Catalog # 1809-EL)
• Readout System:
  • Streptavidin Native Protein NBP2-29367
  • Streptavidin Native Protein NBP2-29370
  • Streptavidin Native Protein NBP2-29371

Packaging, Storage & Formulations

• 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.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
• Preservative: No Preservative
• Concentration: LYOPH
• Reconstitution Instructions: Reconstitute at 0.2 mg/mL in sterile PBS.

Notes

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

Alternate Names for IL-4 Antibody [Biotin]

• B cell growth factor 1
• BCDF
• B-cell stimulatory factor 1
• BCGF1
• BCGF-1
• binetrakin
• BSF1
• BSF-1
• IL4
• IL-4
• IL-4B_cell stimulatory factor 1
• IL4E12
• interleukin 4
• interleukin-4
• Lymphocyte stimulatory factor 1
• MGC79402
• pitrakinra

Background

Interleukin-4 (IL-4), also known as B cell-stimulatory factor-1, is a monomeric, approximately 13-18 kDa Th2 cytokine that shows pleiotropic effects during immune responses (1-3). It is a glycosylated polypeptide that contains three intrachain disulfide bridges and adopts a bundled four alpha -helix structure (4). Equine IL-4 is synthesized with a 24 amino acid (aa) signal sequence. Mature equine IL-4 shares 53-60% aa sequence identity with bovine, goat, human, ovine, and porcine IL-4 and 38-40% aa sequence identity with mouse and rat IL-4. IL-4 exerts its effects through two receptor complexes (5, 6). The type I receptor, which is expressed on hematopoietic cells, is a heterodimer of the ligand binding IL-4 R alpha and the common gamma chain (a shared subunit of the receptors for IL-2, -7, -9, -15, and -21). The type II receptor on non-hematopoietic cells consists of IL-4 R alpha and IL-13 R alpha 1. The type II receptor also transduces IL-13 mediated signals. IL-4 is primarily expressed by Th2-biased CD4⁺ T cells, mast cells, basophils, and eosinophils (1, 2). It promotes cell proliferation, survival, and immunoglobulin class switch to IgE in B cells, acquisition of the Th2 phenotype by naïve CD4⁺ T cells, priming and chemotaxis of mast cells, eosinophils, and basophils, and the proliferation and activation of epithelial cells (7-10). IL-4 plays a dominant role in the development of allergic inflammation and asthma (9, 11).

1. Benczik, M. and S.L. Gaffen (2004) Immunol. Invest. 33:109.
2. Chomarat, P. and J. Banchereau (1998) Int. Rev. Immunol. 17:1.
3. Vandergrifft, E.V. et al. (1994) Vet. Immunol. Immunopathol. 40:379.
4. Redfield, C. et al. (1991) Biochemistry 30:11029.
5. Mueller, T.D. et al. (2002) Biochim. Biophys. Acta 1592:237.
6. Nelms, K. et al. (1999) Annu. Rev. Immunol. 17:701.
7. Paludan, S.R. (1998) Scand. J. Immunol. 48:459.
8. Corthay, A. (2006) Scand. J. Immunol. 64:93.
9. Ryan, J.J. et al. (2007) Crit. Rev. Immunol. 27:15.
10. Grone, A. (2002) Vet. Immunol. Immunopathol. 88:1.
11. Rosenberg, H.F. et al. (2007) J. Allergy Clin. Immunol. 119:1303.

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.

Bioinformatics

• Gene Symbol: IL4
• Uniprot:
  • NP_001075988()