CD25/IL-2R alpha Antibody (745520) [Alexa Fluor® 700]

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Product Details

Summary
Reactivity RtSpecies Glossary
Applications Flow
Clone
745520
Clonality
Monoclonal
Host
Mouse
Conjugate
Alexa Fluor 700
Concentration
Please see the vial label for concentration. If unlisted please contact technical services.

CD25/IL-2R alpha Antibody (745520) [Alexa Fluor® 700] Summary

Immunogen
Chinese hamster ovary cell line CHO-derived recombinant rat CD25/IL-2 R alpha
Glu22-Gln235
Accession # P26897
Specificity
Detects rat CD25/IL-2 R alpha in ELISAs. In direct ELISAs, no cross-reactivity with recombinant mouse (rm) CD25/IL-2 R alpha, rmIL-2 R beta, rmCommon gamma chain, rmIL-15 R alpha, or recombinant human CD25/IL-2 R alpha is observed.
Isotype
IgG1
Clonality
Monoclonal
Host
Mouse
Gene
IL2RA
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Flow Cytometry 0.25-1 ug/10^6 cells
Application Notes
Flow Cytometry: Please use 0.25-1 ug of conjugated antibody per 10e6 cells.

Packaging, Storage & Formulations

Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.
Buffer
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Preservative
0.09% Sodium Azide
Concentration
Please see the vial label for concentration. If unlisted please contact technical services.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for CD25/IL-2R alpha Antibody (745520) [Alexa Fluor® 700]

  • 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

Background

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) (1 - 3). The rat IL-2 R alpha cDNA encodes a 267 amino acid (aa) precursor that includes a 21 aa signal peptide, a 214 aa extracellular domain (ECD) with two Sushi domains, a 21 aa transmembrane segment, and an 11 aa cytoplasmic domain (4). Within the ECD, rat IL-2 R alpha shares 58% and 81% aa sequence identity with human and mouse 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 (5, 6). 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 (7). 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 (8, 9). Increased serum levels of soluble IL-2 R alpha are found in some cancers and immune disorders (10). 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 (11, 12). 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 (11-13).

  1. Minami, Y. et al. (1993) Annu. Rev. Immunol. 11:245.
  2. Kovanen, P.E. and W.J. Leonard (2004) Immunol. Rev. 202:67.
  3. Bluestone, J.A. and Q. Tang (2005) Curr. Opin. Immunol. 17:638.
  4. Page, T.H. and M.J. Dallman (1991) Eur. J. Immunol. 21:2133.
  5. Hatakeyama, M. et al. (1989) Science 244:551.
  6. Takeshita, T. et al. (1992) Science 257:379.
  7. Wang, X. et al. (2005) Science 310:1159.
  8. Wagner, D.K. et al. (1986) J. Immunol. 137:592.
  9. Schulz, O. et al. (1998) J. Exp. Med. 187:271.
  10. Witkowska, A.M. (2005) Mediators Inflamm. 2005:121.
  11. Willerford, D.M. et al. (1995) Immunity 3:521.
  12. Van Parijs, L. et al. (1997) J. Immunol. 158:3738.
  13. Almeida, A.R.M. et al. (2002) J. Immunol. 169:4850.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Secondary Antibodies

 

Isotype Controls

Other Available Formats

Alexa Fluor 350 FAB51561U
Alexa Fluor 405 FAB51561V
Alexa Fluor 488 FAB51561G
Alexa Fluor 594 FAB51561T
Alexa Fluor 647 FAB51561R
Alexa Fluor 700 FAB51561N
Alexa Fluor 750 FAB51561S
Phycoerythrin FAB51561P

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Bioinformatics

Gene Symbol IL2RA
Uniprot