Detects human CD25/IL-2 R alpha in ELISAs and Western blots. In Western blots, detects recombinant rat CD25/IL-2 R alpha but no cross-reactivity with recombinant mouse CD25/IL-2 R alpha. In sandwich immunoassays, this antibody does not cross-react or interfere with recombinant human (rh) IL-1 RI, rhIL-1 RII, rhIL-2 R beta, rhIL-3 R alpha, rhIL-4 R, rhIL-5 R alpha, rhIL-5 R beta, rhIL-6 R, or rhgp130.
Monoclonal Mouse IgG1 Clone # 24204
Protein A or G purified from ascites
S. frugiperda insect ovarian cell line Sf 21-derived recombinant human CD25/IL-2 R alpha Glu22-Cys213 Accession # P01589
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
Human CD25/IL-2 R alpha Sandwich Immunoassay
ELISA Capture (Matched Antibody Pair)
Human CD25/IL-2 R alpha Antibody (Catalog # MAB623)
ELISA Detection (Matched Antibody Pair)
Human CD25/IL-2 R alpha Biotinylated Antibody (Catalog # BAF223)
Recombinant Human CD25/IL-2 R alpha Protein (Catalog # 223-2A)
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Detection of Recombinant Human and Rat CD25/IL-2 R alpha by Western Blot. Western blot shows 25 ng of Recombinant Human CD25/IL-2 R alpha (Catalog # 223-2A), Recombinant Mouse CD25/IL-2 R alpha (Catalog # 2438-RM) and Recombinant Rat CD25/IL-2 R alpha Fc Chimera (Catalog # 5156-RM). PVDF Membrane was probed with 1 µg/mL of Mouse Anti-Human CD25/IL-2 R alpha Monoclonal Antibody (Catalog # MAB623) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). Specific bands were detected for CD25/IL-2 R alpha at approximately 30-250 kDa (as indicated). This experiment was conducted under non-reducing conditions and using Immunoblot Buffer Group 3.
CD25/IL‑2 R alpha in Human PBMCs. CD25/IL‑2 R alpha was detected in immersion fixed human peripheral blood mononuclear cells (PBMCs) stimulated with PHA using Mouse Anti-Human CD25/IL‑2 R alpha Monoclonal Antibody (Catalog # MAB623) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (yellow; Catalog # NL007) and counterstained with DAPI (blue). Upper panel shows a lack of labeling if primary antibodies are omitted and tissue is stained only with secondary antibody followed by incubation with detection reagents. View our protocol for Fluorescent ICC Staining of Non-adherent Cells.
CD25/IL‑2 R alpha in Human Lymph Node. CD25/IL‑2 R alpha was detected in immersion fixed frozen sections of human lymph node using 15 µg/mL Mouse Anti-Human CD25/IL‑2 R alpha Monoclonal Antibody (Catalog # MAB623) overnight at 4 °C. Tissue was stained (red) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Frozen Tissue Sections.
Preparation and Storage
Reconstitute at 0.5 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: CD25/IL-2 R alpha
IL-2 R alpha is a type I transmembrane protein that associates with IL-2 R beta and the common gamma chain to form a high affinity heterotrimeric receptor complex for IL-2. A soluble form of IL-2 R alpha has been detected in serum.
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