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IL-2 Receptor α, Human recombinant protein

soluble IL-2 receptor, TAC-antigen, CD25 antigen

     
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Product info
Primary Accession P31785
Calculated MW 24.8 kDa (31 kDa on SDSPAGE due to glycosylation)
Additional Info
Gene ID 3561
Gene Symbol IL2RA
Other Names soluble IL-2 receptor, TAC-antigen, CD25 antigen
Gene Source Human
Source (BTI-Tn-5B1-4) Hi-5 Insect Cells
Assay&Purity SDS-PAGE; ≥98%
Assay2&Purity2 HPLC;
Recombinant Yes
Sequence ELCDDDPPEI PHATFKAMAY KEGTMLNCEC KRGFRRIKSG SLYMLCTGNS SHSSWDNQCQ CTSSATRNTT KQVTPQPEEQ KERKTTEMQS PMQPVDQASL PGHCREPPPW ENEATERIYH FVVGQMVYYQ CVQGYRALHR GPAESVCKMT HGKTRWTQPQ LICTGEMETS QFPGEEKPQA SPEGRPESET SCLVTTTDFQ IQTEMAATME TSIFTTEYQ
Target/Specificity IL-2 Rα
Application Notes Centrifuge the vial prior to opening. Reconstitute in 1x PBS pH 7.2 to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.
Format Lyophilized powder
Storage -20°C; Sterile filtered through a 0.2 micron filter. Lyophilized from 1x PBS
Citations (0)

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Background

The IL-2 receptor system consists of three non-covalently linked subunits termed IL-2Rα, IL-2Rβ, and IL-2Rγ. The IL-2Rα is a type I transmembrane protein consisting of a 219 amino acid extracellular domain, a 19 amino acid transmembrane domain and a 13 amino acid intracellular domain, which is not involved in the transduction of IL-2 signals. Proteolytic processing of IL-2Rα releases the entire extracellular domain of IL-2Rα thereby generating a 219 amino acid soluble protein called soluble IL-2Rα (sIL-2Rα). The homodimeric form binds IL-2 (KD=10mM) and facilitates IL-2 signaling. The secreted sIL-2Rα is expressed on leukemia cells, lymphoma cells, newly activated T and B cells, as well as on approximately 10% of NK cells. Recombinant human sIL-2Rα is a 24.8 kDa protein containing 219 amino acid residues consisting of only the extracellular domain of IL-2Rα. Due to glycosylation, IL-2Rα has an approximate molecular weight of 31 kDa based on SDSPAGE gel and Mass Spectrometry.

References

Takeshita T.,et al.Science 257:379-382(1992).
Noguchi M.,et al.J. Biol. Chem. 268:13601-13608(1993).
Puck J.M.,et al.Hum. Mol. Genet. 2:1099-1104(1993).
Hayashi A.,et al.Submitted (FEB-2003) to the EMBL/GenBank/DDBJ databases.
Ross M.T.,et al.Nature 434:325-337(2005).

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$ 135.00
$ 540.00
Cat# PBV10735r
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