IL-5 Antibody [Alexa Fluor® 405]

• Reactivity: Po
• Applications: WB, B/N, ICC/IF
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Alexa Fluor 405

IL-5 Antibody [Alexa Fluor® 405] Summary

• Immunogen: Mouse myeloma cell line NS0-derived recombinant porcine IL-5
  Ile20-Ser134
  Accession # Q9MYM5
• Specificity: Detects porcine IL-5 in direct ELISAs and Western blots. In direct ELISAs, less than 30% cross‑reactivity with recombinant canine IL‑5 and less than 10% cross-reactivity with recombinant human IL-5, recombinant mouse IL-5, and recombinant r
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • 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-5 Antibody [Alexa Fluor® 405]

• BCDF mu
• B-cell differentiation factor I
• BCGFII
• EDF
• Eo-CSF
• Eosinophil differentiation factor
• IL5
• IL-5
• IL-5T-cell replacing factor
• interleukin 5 (colony-stimulating factor, eosinophil)
• interleukin-5
• TRF
• TRFB cell differentiation factor I

Background

Interleukin-5 (IL-5) is a secreted disulfide-linked homodimeric glycoprotein that belongs to the alpha -helical group of cytokines that includes IL-3, IL-5 and GM-CSF (1‑3). IL-5 is primarily produced by CD4⁺ Th2 cells, but eosinophils and mast cells also produce IL-5. Porcine IL-5 is synthesized as a 134 amino acid (aa) precursor that contains a 19 aa signal sequence and a 115 aa mature segment (5). Four alpha -helices and two cysteines that form interchain disulfide bonds with a second, antiparallel IL-5 molecule are conserved among species (3-5). Monomeric IL-5 is a predicted 14 kDa protein but usage of N-linked glycosylation sites may increase its molecular weight (5). Mature porcine IL-5 shares 90%, 88%, 86%, 85%, 84%, 66%, 68%, 63%, 63% and 59% aa sequence identity with mature bovine, sheep, cat, equine, canine, human, guinea pig, cotton rat, murine and rat IL-5, respectively. Recombinant porcine IL-5 induced proliferation in the human TF-1 cell line (5). The receptor for human IL-5 consists of a 60 kDa ligand-binding subunit (IL-5 R alpha ) and a 120 kDa signal-transducing subunit ( beta _c). It is suggested that dimeric IL-5 binding to IL-5 R alpha recruits beta _c, which subsequently covalently links with IL-5 R alpha . Two receptor complexes then associate to form the physiologic IL-5 receptor (6, 7). IL-5 binds proteoglycans, potentially enhancing its activity (8). Following receptor binding, IL-5 promotes the maturation, activation and migration of eosinophils, as demonstrated during asthmatic eosinophilic lung inflammation (1‑3). It also mobilizes eosinophils and CD34⁺ progenitors from marrow. It also enhances Ig release from B cells and contributes to IL-4 production. Finally, it primes basophils for histamine and leukotriene release (1, 2, 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.