The 5B11 antibody reacts with mouse CD123, the α chain subunit (IL-3Rα) of the mouse IL-3 receptor. The IL-3Rα chain is a 60-70 kD transmembrane glycoprotein that binds IL-3 with low affinity but cannot transduce signals by itself. The mouse IL-3Rα chain can complex with either of two homologous β chain subunits (βc and βIL-3) to form high-affinity heterodimeric IL-3 receptors. The βc chain is the common β chain subunit that can complex with the α subunits of the mouse IL-3R, IL-5R and GM-CSFR to form high-affinity receptors. The βIL-3 subunit can form high affinity IL-3 receptor complexes with only the IL-3Rα subunit. The βIL-3 subunit clone is specific for mouse IL-3 and binds with low affinity. The immunogen used to generate the 5B11 hybridoma was CTLL cells transfected with the mouse IL-3R alpha chain. The 5B11 antibody does not block the binding of IL-3 protein to the high affinity IL-3 receptor heterodimer.
BD Pharmingen™ Biotin Rat Anti-Mouse CD123 - Biotin - Clone 5B11 - Isotype Rat IgG2a, κ - Reactivity Ms - 0.5 mg
Purification
The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.
This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.
Handling Advice
The antibody was conjugated with biotin under optimum conditions, and unreacted biotin was removed.
Storage
4 °C
Storage Comment
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
Ichihara, Hara, Takagi, Cho, Gorman, Miyajima: "Impaired interleukin-3 (IL-3) response of the A/J mouse is caused by a branch point deletion in the IL-3 receptor alpha subunit gene." in: The EMBO journal, Vol. 14, Issue 5, pp. 939-50, (1995) (PubMed).
Mueller, Chen, Schwartz, Gorman, Kennedy: "Subset of CD4+ T cell clones expressing IL-3 receptor alpha-chains uses IL-3 as a cofactor in autocrine growth." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 153, Issue 7, pp. 3014-27, (1994) (PubMed).
Hara, Miyajima: "Two distinct functional high affinity receptors for mouse interleukin-3 (IL-3)." in: The EMBO journal, Vol. 11, Issue 5, pp. 1875-84, (1992) (PubMed).