Reactivity | FeSpecies Glossary |
Applications | WB, B/N, ICC/IF |
Clonality | Polyclonal |
Host | Goat |
Conjugate | Unconjugated |
Concentration | LYOPH |
Immunogen | Mouse myeloma cell line NS0-derived recombinant feline IL-5 Ile20-Ser134 Accession # O77515 |
Specificity | Detects feline IL-5 in direct ELISAs and Western blots. In direct ELISAs, approximately 80% cross-reactivity with recombinant bovine IL-5 and recombinant equine IL-5 is observed, approximately 50% cross-reactivity with recombinant porcine IL-5 and recombinant canine IL-5 is observed, approximately 10% cross-reactivity with recombininat human IL-5 is observed, and less than 1% cross-reactivity with recombinant rat IL-5, recombinant mouse IL-5, and recombinant rhesus monkey IL-5 is observed. |
Source | N/A |
Isotype | IgG |
Clonality | Polyclonal |
Host | Goat |
Gene | IL5 |
Purity Statement | Antigen Affinity-purified |
Endotoxin Note | <0.10 EU per 1 μg of the antibody by the LAL method. |
Innovator's Reward | Test in a species/application not listed above to receive a full credit towards a future purchase. |
Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Buffer | Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS. |
Preservative | No Preservative |
Concentration | LYOPH |
Reconstitution Instructions | Reconstitute at 0.2 mg/mL in sterile PBS. |
Interleukin 5 (IL-5) is a T cell-derived factor that promotes the proliferation, differentiation and activation of eosinophils. In mice, IL-5 is also a growth and differentiation factor for B cells (1‑3). Various names previously used to describe IL-5 include: T cell replacing factor (TRF), B cell growth factor II (BCGFII), B cell differentiation factor μ (BCDF μ), eosinophil differentiation factor (EDF) and eosinophil colony-stimulating factor (Eo-CSF). Biologically active IL-5 is a disulfide-linked homodimer. As in human IL-5, the cDNA for cat IL-5 encodes a precursor protein with signal peptide that is cleaved to generate the secreted mature protein containing 115 amino acid (aa) residues. Feline IL-5 shares 70% and 59% aa sequence identity with human and mouse IL-5, respectively. IL-5 exerts its activity on target cells by binding to specific cell surface receptor complexes. The functional high-affinity receptor complex for IL-5 is composed of a ligand-binding alpha subunit that is specific for IL-5, and a non ligand-binding common beta subunit that is required for signal transduction. The common beta subunit is shared with the high-affinity receptor complexes for IL-3 and GM-CSF. In human, IL-5 R alpha subunit is primarily expressed on eosinophils and basophils. During eosinophil development, IL-5 up‑regulates the expression of IL-5 R alpha . In contrast, in mature eosinophils, the expression of IL-5 R alpha mRNA is down-regulated by IL-5, as well as by IL-3 and GM-CSF. Furthermore, IL-5 also down-modulates cell surface IL-5 R alpha via a proteinase-mediated process that releases the soluble IL-5 R alpha extracellular domain (4‑6).
Secondary Antibodies |
Isotype Controls |
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