Mouse CD25/IL-2R alpha Biotinylated Antibody

Catalog # Availability Size / Price Qty
FAB9164B-100
Detection of CD25 in Mouse Splenocytes by Flow Cytometry.
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Mouse CD25/IL-2R alpha Biotinylated Antibody Summary

Species Reactivity
Mouse
Specificity
Detects mouse CD25/IL-2 R alpha in flow cytometry.
Source
Monoclonal Rat IgG1 Clone # PC61.5.3
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
B6.1 mouse cytotoxic T cell line
Formulation
Supplied in a saline solution containing BSA and Sodium Azide.
Label
Biotin

Applications

Recommended Concentration
Sample
Flow Cytometry
10 µL/106 cells
See below

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.

Data Example

Flow Cytometry Detection of CD25 in Mouse Splenocytes by Flow Cytometry. View Larger

Detection of CD25 in Mouse Splenocytes by Flow Cytometry. Mouse splenocytes were stained with (A) Rat Anti-Mouse CD25/IL-2R alpha Biotinylated Monoclonal Antibody (Catalog # FAB9164B) or (B) Rat IgG1 isotype control (Catalog # MAB005) followed by APC-conjugated Streptavidin (Catalog # F0050). Cells were then fixed and permeabilized with FlowX FoxP3 Fixation & Permeabilization Buffer Kit (Catalog # FC012) and stained with Rabbit Anti-Human/Mouse FoxP3 PE-conjugated Monoclonal Antibody (Catalog # IC8214P). View our protocol for Staining Membrane-associated Proteins.

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Preparation and Storage

Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.

Background: CD25/IL-2R alpha

IL-2 receptor alpha (IL-2 R alpha ), also known as CD25, is a 55 kDa type I membrane glycoprotein that belongs to the family of cytokine receptors that utilize the common gamma chain subunit ( gamma c). IL-2 R alpha is primarily expressed on activated T cells and on regulatory T cells (Treg). The mouse IL-2 R alpha cDNA encodes a 268 amino acid (aa) precursor that includes a 21 aa signal peptide, a 215 aa extracellular domain (ECD) with two Sushi domains, a 21 aa transmembrane segment, and an 11 aa cytoplasmic domain. Within the ECD, mouse IL-2 R alpha shares 81% and 58% aa sequence identity with rat and human IL-2 R alpha, respectively. It shares approximately 15% aa sequence identity with IL-4, -7, -9, -15, and -21 receptor subunits that also complex with gamma c. IL-2 R beta (CD122) and gamma c (IL-2 R gamma /CD132) dimerize to form a constitutively expressed intermediate affinity IL-2 receptor. By itself, IL-2 R alpha binds IL-2 with low affinity. It associates with IL-2 R beta and gamma c to generate a ternary high affinity IL-2 receptor complex. A soluble form of IL-2 R alpha can be generated by proteolytic cleavage of the cell surface receptor, rendering the T cell unresponsive to IL-2. Increased serum levels of soluble IL-2 R alpha are found in some cancers and immune disorders. IL-2 R alpha is required for Activation Induced Cell Death (AICD) of naive T cells, a mechanism responsible for deleting autoreactive T cell clones. IL-2 R alpha is also required for the development of CD4+CD25+ Treg which suppress autoreactive CD4+ T cells, thereby contributing to peripheral T cell homeostasis.

Long Name
Interleukin 2 Receptor alpha
Entrez Gene IDs
3559 (Human); 16184 (Mouse); 25704 (Rat); 403870 (Canine)
Alternate Names
CD25 antigen; CD25; IDDM10; IL-2 R alpha; IL-2 receptor subunit alpha; IL2R alpha; IL-2R subunit alpha; IL2R; IL2RA; IL-2Ra; IL-2-RA; IL2-RA; interleukin 2 receptor, alpha; interleukin-2 receptor subunit alpha; p55; TAC antigen; TCGFR

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