IL-5R alpha/CD125 Antibody [Alexa Fluor® 750]

• Applications: WB
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Alexa Fluor 750

IL-5R alpha/CD125 Antibody [Alexa Fluor® 750] Summary

• Immunogen: Mouse myeloma cell line NS0-derived recombinant mouse IL‑5 R alpha /CD125
  Asp18-His339
  Accession # P21183
• Specificity: Detects mouse IL‑5 R alpha /CD125 in direct ELISAs and Western blots. In direct ELISAs, approximately 10% cross‑reactivity with recombinant human (rh) IL‑5 R alpha is observed and less than 1% cross‑reactivity with recombinant mous
• Source: N/A
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Purity Statement: Antigen Affinity-purified

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.

Notes

This product is provided under an agreement between Life Technologies Corporation and R&D Systems, Inc, and the manufacture, use, sale or import of this product is subject to one or more US patents and corresponding non-US equivalents, owned by Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components (1) in manufacturing; (2) to provide a service, information, or data to an unaffiliated third party for payment; (3) for therapeutic, diagnostic or prophylactic purposes; (4) to resell, sell, or otherwise transfer this product or its components to any third party, or for any other commercial purpose. Life Technologies Corporation will not assert a claim against the buyer of the infringement of the above patents based on the manufacture, use or sale of a commercial product developed in research by the buyer in which this product or its components was employed, provided that neither this product nor any of its components was used in the manufacture of such product. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, Cell Analysis Business Unit, Business Development, 29851 Willow Creek Road, Eugene, OR 97402, Tel: (541) 465-8300. Fax: (541) 335-0354.

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

Background

Interleukin‑5 Receptor alpha (IL‑5 R alpha ), also known as CD125, is a 60 kDa hematopoietin receptor that plays a dominant role in eosinophil biology (1‑3). Mature mouse IL‑5 R alpha consists of a 322 amino acid (aa) extracellular domain (ECD) with a WSxWS motif and a four cysteine motif, a 22 aa transmembrane segment, and a 54 aa cytoplasmic domain (4). Within the ECD, mouse IL‑5 R alpha shares 71% and 86% aa sequence identity with human and rat IL‑5 R alpha , respectively. Alternate splicing of mouse IL‑5 R alpha generates soluble secreted forms which function as IL‑5 antagonists (4, 5). The high affinity receptor for IL‑5 is a complex that consists of the ligand binding IL‑5 R alpha and the transmembrane common  beta chain ( beta c/CD131) which is shared with the receptor complexes for IL‑3 and GM‑CSF (6). IL‑5 R alpha binds IL‑5 at low affinity and then associates with preformed beta c oligomers to form the signaling‑competent receptor complex (7). IL‑5 stimulation of CD34⁺ hematopoietic progenitor cells induces the up‑regulation of transmembrane IL‑5 R alpha followed by eosinophilic differentiation and activation (8‑10). IL‑5 R alpha also promotes the differentiation of basophils and B cells (11, 12). Exposure of mature eosinophils to IL‑5 attenuates their IL‑5 responsiveness by inducing the down‑regulation of surface IL‑5 R alpha and increased production of soluble IL‑5 R alpha (13, 14). Elevated production of IL‑5 at sites of allergic inflammation induces eosinophilia and exacerbation of immune cell infiltration, tissue damage, and remodeling (2, 3).

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.