Detects mouse IL-4 R alpha in direct ELISAs and Western blots. In direct ELISAs and Western blots, less than 1% cross-reactivity with recombinant human (rh) IL-4 R, rhIL-9 R, rhIL-13 R alpha 1, and recombinant mouse IL-13 R alpha 2 is observed.
Polyclonal Goat IgG
Mouse myeloma cell line NS0-derived recombinant mouse IL-4 R alpha
Supplied in a saline solution containing BSA and Sodium Azide.
Detection of IL-4 R alpha in Mouse Splenocytes by Flow Cytometry.
Mouse splenocytes were stained with Goat Anti-Mouse IL-4 R alpha PE-conjugated Antigen Affinity-purified Polyclonal Antibody (Catalog # FAB530P, filled histogram) or isotype control antibody (Catalog # IC108P, open histogram). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
12 months from date of receipt, 2 to 8 °C as supplied.
Background: IL-4 R alpha
Interleukin 4 is a pleiotropic cytokine produced primarily by activated T cells, mast cells and basophils. The diverse biological effects of IL-4 on a variety of cell types are mediated by the binding of IL-4 to specific cell surface receptors. As is the case with many other cytokines, the functional high-affinity receptor for IL-4 is a complex consisting of a ligand binding subunit ( alpha chain) and a second subunit ( beta chain) that can modulate the ligand binding affinity of the receptor complex. It has been shown that in certain cell types, the gamma chain of the IL-2 receptor is a functional component ( beta chain) of the IL-4 receptor complex.
cDNA clones for the ligand binding chain (IL-4 R) of both the mouse and human high affinity IL-4 receptors have been isolated. The human or mouse IL-4R is an approximately 140 kDa transmembrane protein containing an extracellular domain, a transmembrane domain, and a large cytoplasmic domain that is essential for IL-4 signal transduction. In addition to the cDNA clone encoding the full-length transmembrane protein, a second cDNA clone that arises from alternate splicing and that encodes a soluble secreted form of IL-4 R has been isolated from mouse cells, but not yet from human sources. A naturally-occurring soluble form of the IL-4 R has also been identified in mouse biological fluids and murine cell culture supernatants.
Native or recombinant murine soluble IL-4 R, as well as recombinant human soluble IL-4 R, can bind IL-4 with the same affinity as the membrane bound IL-4 R. Soluble IL-4 R is a competitive inhibitor of IL-4 and has been shown to neutralize effectively many IL-4-mediated responses both in vivo and in vitro.
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