Species |
Human |
Protein Construction |
IL-2 R alpha/CD25 (Glu22-Cys213) Accession # P01589 |
His |
Avi |
N-term |
|
C-term |
|
Conjugate |
Biotin |
Purity |
> 95% as determined by BisTris PAGE
> 95% as determined by HPLC |
Endotoxin Level |
Less than 1EU per μg by the LAL method. |
Biological Activity |
Measured by its binding ability in a functional ELISA. Immobilized AntiCD25 Antibody, hFc Tag at 0.2μg/ml (100μl/well) on the plate can bind IL-2 R alpha/CD25[Biotin], His & Avi, Human. Test result was comparable to standard batch. |
Expression System |
HEK293 |
Theoretical Molecular Weight |
24.6 kDa |
Apparent Molecular Weight |
Due to glycosylation, the protein migrates to 40-50 kDa based on Bis-Tris PAGE result. |
Formulation |
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). |
Reconstitution |
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water. |
Storage & Stability |
Upon receiving, the product remains stable up to 6 months at -20 °C or below. Upon reconstitution, the product should be stable for 3 months at -80 °C. Avoid repeated freeze-thaw cycles. |
![IL-2 R Alpha/CD25[Biotin], His & Avi, Human IL-2 R Alpha/CD25[Biotin], His & Avi, Human](/product/documents/down?doc_name=Z04096 ELISA.jpg&file=scm_files/productFile_notes/2025/04/25/Z04096 ELISA.jpg)
Immobilized Anti-IL-2 R alpha Antibody, hFc Tag at 0.2 μg/ml (100 μL/well) on the plate. Dose response curve for IL-2 R alpha/CD25[Biotin], His & Avi, Human, His Tag with the EC50 of 12.4 ng/ml determined by ELISA.
![IL-2 R Alpha/CD25[Biotin], His & Avi, Human IL-2 R Alpha/CD25[Biotin], His & Avi, Human](/product/documents/down?doc_name=Z04096 HPLC.jpg&file=scm_files/productFile_notes/2025/04/25/Z04096 HPLC.jpg)
The purity of IL-2 R alpha/CD25[Biotin], His & Avi, Human is greater than 95% as determined by SEC-HPLC.
![IL-2 R Alpha/CD25[Biotin], His & Avi, Human IL-2 R Alpha/CD25[Biotin], His & Avi, Human](/product/documents/down?doc_name=Z04096 PAGE.png&file=scm_files/productFile_notes/2025/04/25/Z04096 PAGE.png)
IL-2 R alpha/CD25[Biotin], His & Avi, Human on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.
Target Background |
Human IL-2 receptor alpha (IL-2 R alpha), also known as Tac antigen and as CD25, was initially identified as a 55 kDa membrane glycoprotein that is capable of binding IL‑2.eceptor for interleukin-2. The receptor is involved in the regulation of immune tolerance by controlling regulatory T cells (TREGs) activity. TREGs suppress the activation and expansion of autoreactive T-cells. |
Synonyms |
CD25; IDDM10; IL-2 R alpha; IL2R; IL2RA; p55; TCGFR |
For research use only. Not intended for human or animal clinical trials, therapeutic or diagnostic use.