Species Reactivity
Human
Specificity
Detects human IL‑3 R alpha /CD123 in direct ELISAs and Western blots.
Source
Monoclonal Mouse IgG 1 Clone # 32703
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
S. frugiperda insect ovarian cell line Sf 21-derived recombinant human IL‑3 R alpha /CD123
Lys20-Arg305, predicted
Accession # P26951Formulation
Supplied in a saline solution containing BSA and Sodium Azide.
Label
PerCP (Peridinin-chlorophyll Protein Complex)
Applications
Recommended
ConcentrationSample
Flow Cytometry
10 µL/10 6 cells
See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. are available in the Technical Information section on our website.
Data Examples
Flow Cytometry | Detection of IL‑3 R alpha /CD123 in Human Blood Lymphocytes by Flow Cytometry. Human peripheral blood lymphocytes were stained with Mouse Anti-Human HLA‑DR PE‑conjugated Monoclonal Antibody (Catalog # ) and either (A) Mouse Anti-Human IL‑3 R alpha /CD123 PerCP‑conjugated Monoclonal Antibody (Catalog # FAB301C) or (B) Mouse IgG1 PerCP Isotype Control (Catalog # ). View our protocol for . |
Preparation and Storage
Shipping
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-3 R alpha/CD123
IL-3 is a pleiotropic cytokine that can stimulate proliferation and differentiation of pluripotent hematopoietic stem cells as well as various lineage committed progenitors (1, 2). IL-3 exerts its activity through binding to a specific cell surface receptor known as IL-3 R. IL-3 R is a heterodimeric structure composed of a 70 kDa IL-3 R alpha subunit (CD123) and a 120-140 kDa IL-3 R beta subunit (CD131) (3, 4). IL-3 R alpha binds IL-3 with relatively low affinity. In the presence of IL-3 R beta, however, IL-3 R alpha has a much higher affinity for IL-3. It is not clear how signal transduction occurs following IL-3 binding. The IL-3 R alpha chain has a very short intracellular domain while the IL‑3 R beta chain has a very large cytoplasmic domain. The IL‑3 R beta chain is also shared by the receptors for IL-5 and GM-CSF. Cells known to express IL-3 receptors include hematopoietic progenitors, epithelial cells, double negative T cells, mast cells, basophils and blood monocytes (5).
References:
Moore, M.A.S. et al. (1991) Blood 72:944.
Warren, D.J. et al. (1988) J. Immunol. 140:94.
Plant M. et al. (1989) Nature 339:150.
Budel, L.M. et al. (1990) Blood 75:1439.
Schrader, J.W. et al. (1988) In Interleukin-3: The Panspecific hemopoietin (ed. J.W. Schrader), Academic Press, San Diego, CA.
Long Name:
Interleukin 3 Receptor alpha
Entrez Gene IDs:
3563 (Human); 16188 (Mouse)
Alternate Names:
CD123 antigen; CD123; hIL3Ra; hIL-3Ra; IL-3 R alpha; IL-3 receptor subunit alpha; IL3R alpha; IL-3R subunit alpha; IL3R; IL3RA; IL-3Ra; IL-3R-alpha; IL3RAY; IL3RX; IL3RY; interleukin 3 receptor, alpha (low affinity); interleukin-3 receptor subunit alpha; MGC34174
