Show Order Info
Pack Size:100μg/vial
Validated Species:Human
Application:IHC, WB
Data & Images


Product Name Anti-CD25/IL-2sR alpha Antibody
SKU/Catalog Number PA1747
Description Rabbit IgG polyclonal antibody for Interleukin-2 receptor subunit alpha(IL2RA) detection. Tested with WB, IHC-P in Human.
Cite This Product Anti-CD25/IL-2sR alpha Antibody (Boster Biological Technology, Pleasanton CA, USA, Catalog # PA1747)
Replacement Item This antibody may replace the following items: sc-13946|sc-19628|sc-365511|sc-365912|sc-374034|sc-393326|sc-57297|sc-664|sc-665|sc-666 from Santa Cruz Biotechnology.
Host Rabbit
Isotype N/A
Validated Species Human
Application IHC, WB

*Our Boster Guarantee covers the use of this product in the above tested applications.

**For positive and negative control design, consult "Tissue specificity" under Protein Target Info.

Recommended Detection Systems Boster recommends Enhanced Chemiluminescent Kit with anti-Rabbit IgG (EK1002) for Western blot, and HRP Conjugated anti-Rabbit IgG Super Vision Assay Kit (SV0002-1) for IHC(P).
*Blocking peptide can be purchased at $50. Contact us for more information
**Boster also offers various secondary antibodies for Immunoflourescecne and IHC. Take advantage of the buy 1 primary antibody get 1 secondary antibody for free promotion for the entire year 2017!
Immunogen A synthetic peptide corresponding to a sequence at the N-terminus of human CD25/IL-2sR Alpha (39-57aa MAYKEGTMLNCECKRGFRR).
Cross Reactivity No cross reactivity with other proteins
Pack Size 100μg/vial


Clonality Polyclonal
Form Lyophilized
Contents Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3.
*carrier free antibody available upon request.
Concentration Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
Storage At -20°C for one year. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for a longer time.Avoid repeated freezing and thawing.
Purification Immunogen affinity purified.
Isotype N/A

Protein Target Info (Source:

You can check the tissue specificity below for information on selecting positive and negative control.

Gene Name IL2RA
Protein Name Interleukin-2 receptor subunit alpha(IL-2 receptor subunit alpha/IL-2-RA/IL-2R subunit alpha/IL2-RA)
Molecular Weight 30819 MW
Protein Function Receptor for interleukin-2.
Sequence Similarities Contains 2 Sushi (CCP/SCR) domains.
Subcellular Localization Membrane; Single-pass type I membrane protein.
Uniprot ID P01589
Alternative Names Interleukin-2 receptor subunit alpha;IL-2 receptor subunit alpha;IL-2-RA;IL-2R subunit alpha;IL2-RA;TAC antigen;p55;CD25;IL2RA;
Research Areas |immunology|adaptive immunity|t cells| immunology|innate immunity|cytokines|interleukins|
*if product is indicated to react with multiple species, protein info is based on the human gene.

Background for Interleukin-2 receptor subunit alpha(IL-2 receptor subunit alpha/IL-2-RA/IL-2R subunit alpha/IL2-RA)

IL2RA(Interleukin 2 receptor, alpha), also called IL2R, IL2R, Alpha Chain or CD25, is a protein that in humans is encoded by the IL2RA gene.The IL2RA gene is mapped on 10p15.1. IL2RA is composed of strand-swapped "sushi-like" domains, unlike the classical cytokine receptor fold. As a result of this domain swap, IL2RA uses a composite surface to dock into a groove on IL2 that also serves as a binding site for antagonist drugs.Homodimeric alpha chains(IL2RA) result in low-affinity receptor, while homodimeric beta(IL2RB) chains produce a medium-affinity receptor. Normally an integral-membrane protein, soluble IL2RA has been isolated and determined to result from extracellular proteolyisis. Infection by the protozoan Trypanosoma cruzi causes Chagas disease, characterized by a reduction in the amount of IL2RA expressed on the surface of immune cells. This leads to chronic immune suppression, becoming increasingly severe over the course of many years and ultimately resulting in death if left untreated.

Anti-CD25/IL-2sR alpha Antibody Images

Click the images to enlarge.

Anti-CD25/IL-2sR alpha Antibody
Anti- CD25/IL-2sR Alpha antibody, PA1747, Western blotting
All lanes: Anti CD25/IL-2sR Alpha (PA1747) at 0.5ug/ml
Lane 1: SMMC Whole Cell Lysate at 40ug
Lane 2: A549 Whole Cell Lysate at 40ug
Lane 3: JURKAT Whole Cell Lysate at 40ug
Lane 4: MCF-7 Whole Cell Lysate at 40ug
Lane 5: RAJI Whole Cell Lysate at 40ug
Lane 6: PANC Whole Cell Lysate at 40ug
Predicted bind size: 31KD
Observed bind size: 45KD
Anti-CD25/IL-2sR alpha Antibody
Anti- CD25/IL-2sR Alpha antibody, PA1747, IHC(P)
IHC(P): Human Tonsil Tissue

Customer Reviews

Review by


"Works everytime."


Applications Western Blot
Sample Jurkat Lysates
Detection ECL solution

"Our lab is identifying IL-2 receptor components in non-lymphoid primary cell lines. We use Jurkat (E6-1) cell lines as a positive control for our experiments. Got one single band at the correct size. Very sensitive, can use at low concentration. Great antibody. Works well with whole cell lystes from our cell lines."

(Posted on 1/18/2016)
Write a review for PA1747

Customer Q&As

Q: Do you offer BSA-free antibodies? Keyword: Bovine serum albumin, carrier protein, conjugation
A: Yes, please contact us at for more information about BSA-free antibodies and availability. The new BSA-free formula uses trehalose as a replacement to BSA. We have tested many alternative chemicals and found that trehalose protects the antibodies the best.
Q: Is your western blot protocol provided from the website applicable for all your antibodies? Keyword: applications, WB
A: The protocol is applicable for all our antibodies in WB, the NC Membrane(0.45μm or 0.22μm) and transfer time(70 mins or 50 mins) depends on the protein molecular weight, details can be found in included protocol.
Q: Can I conjugate markers to this antibody? Can I link custom conjugates to this antibody? Keyword: conjugation
A: The antibody is stored with BSA and cannot be conjugated with markers. Carrier free antibodies are available upon request. Please contact
Q: What should I use for negative control?
A: Please contact us for negative control suggestions. You can also check expression databases such as genecards, uniprot etc. Due to logistic reasons, we do not sell serum or lysates that we use internally for positive or negative control.
Q: Where can I find troubleshooting information? What should I do if I have unexpected bands, high background, no signal, weak signal
A: You can find Boster's troubleshoot guides under tech support tab. Please contact us for further assistance on troubleshooting your experiment.
Q: What is the immunogen sequence of this antibody? Is this antibody polyclonal or monoclonal?
A: You can find the immunogen sequence under "Immunogen" and clonality in the product name.
Q: What is the expected band size? Why is it different than the observed band size?
A: The expected band size is predicted on the size of the protein. The actual band size may be affected by a few other factors including but not limited to:
1. Post-translational modification:phosphorylation, methylation, glycosylation etc. These modifications prevent SDS molecules from binding to the target protein and thus make the band size appear larger than expected
2. Post-translational cleavage: this can cause smaller bands and or multiple bands

3. Alternative splicing: the same gene can have alternative splicing patterns generating different size proteins, all with reactivities to the antibody.

4. Amino Acid R chain charge: SDS binds to positive charges. The different size and charge of the Amino Acid side chains can affect the amount of SDS binding and thus affect the observed band size.
5. Multimers: Multimers are usually broken up in reducing conditions. However if the interactions between the multimers are strong, the band may appear higher.,
Q: What is the suggested dilution ratio for Western Blot (WB), Immunohistochemistry (IHC) and or ELISA standards? What is the optimal pH for the sample?
A: Check the datasheet for the product for details on dilution ratios for different experiments. You can find the datasheet button on the right side of the product page.
Q: What is the protocol you used for your Western blotting (WB) and Immunohistochemistry (IHC)?
A: Check our protocols under the tech support tab.
Q: What are some alternative names that could be used to describe this product?
A: Some common names include but are not limited to cd25 antibody, il2ra antibody, interleukin 2 receptor alpha antibody