Detects human CD25/IL-2 R alpha in direct ELISAs and Western blots. In direct ELISAs, no cross-reactivity with recombinant human (rh) IL‑2 R gamma or rhIL‑15 R alpha is observed.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG_2A

Scientific Data Images for Human CD25/IL-2R alpha APC-conjugated Antibody

Detection of CD25/IL-2 R alpha in Human PBMCs by Flow Cytometry.

Human peripheral blood mononuclear cells (PBMCs) treated with 20 ng/mL Recombinant Human IL-2 (Catalog # 202-IL) and 10 ng/mL Recombinant Human TGF-beta 1 (Catalog # 240-B) for 2 days were stained with Mouse Anti-Human CD4 PE-conjugated Monoclonal Antibody (Catalog # FAB3791P) and either (A) Mouse Anti-Human CD25/IL-2 R alpha APC-conjugated Monoclonal Antibody (Catalog # FAB1020A) or (B) Mouse IgG_2AAllophycocyanin Isotype Control (Catalog # IC003A). View our protocol for Staining Membrane-associated Proteins.

Applications for Human CD25/IL-2R alpha APC-conjugated Antibody

Application

Recommended Usage

Flow Cytometry

10 µL/10⁶ cells
Sample: Human peripheral blood mononuclear cells (PBMCs) treated with Recombinant Human IL‑2 (Catalog # 202-IL) and Recombinant Human TGF‑ beta1 (Catalog # 240-B)

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Formulation

Supplied in a saline solution containing BSA and Sodium Azide.

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: CD25/IL-2R alpha

Human CD25, also known as IL-2 receptor alpha (IL-2 R alpha) and asTac antigen, was initially identified as a 55 kDa membrane glycoprotein that is capable of binding IL-2. The IL-2 R alpha cDNA encodes a 272 amino acid residue precursor Type I membrane protein with a 21 residue signal peptide, a 219 residue extracellular region, a 19 residue transmembrane region and a 13 residue cytoplasmic domain. IL-2 R alpha lacks structural features characteristic of members of the cytokine receptor superfamily. By itself, IL-2 R alpha binds IL-2 with low affinity. However, when IL-2 R alpha is associated with the IL-2 receptor beta and gamma chains, a high affinity heterotrimeric receptor complex that transduces IL-2 signals is formed. Soluble forms of many cytokine receptors have been reported, and a soluble form of IL-2 R alpha (IL-2 sR alpha) appears in serum, concomitant with its increased expression on cells. The function of the soluble IL-2 R alpha is unclear. Increased levels of IL-2 sR alpha in biological fluids reportedly correlate with increased T and B cell activation and immune system activation. Increased serum concentration of IL-2 sR alpha has been observed in patients with a variety of inflammatory conditions and in the course of some leukemias and lymphomas.

Long Name

Interleukin 2 Receptor alpha

Alternate Names

CD25, IL-2 R alpha, IL-2Ra, IL2R alpha, IL2RA

Entrez Gene IDs

3559 (Human); 16184 (Mouse); 25704 (Rat); 403870 (Canine); 102123605 (Cynomolgus Monkey)

Gene Symbol

IL2RA

UniProt

P01589

Additional CD25/IL-2R alpha Products

Product Documents for Human CD25/IL-2R alpha APC-conjugated Antibody

Product Datasheets

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COA

SDS

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Product Specific Notices for Human CD25/IL-2R alpha APC-conjugated Antibody

For research use only

Citations
Reviews

Spectra Viewer
Flow Cytometry

Human CD25/IL-2R alpha APC-conjugated Antibody

R&D Systems, part of Bio-Techne | Catalog # FAB1020A

Key Product Details

Validated by

Species Reactivity

Validated:

Cited:

Applications