Mouse CD25/IL-2R alpha Biotinylated Antibody

Catalog #: FAB9164B Datasheet / COA / SDS

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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.

Scientific Data

Flow Cytometry

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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); 102123605 (Cynomolgus Monkey)

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