IL-2 receptor alpha, soluble Recombinant Protein

• Description:

  The IL-2 receptor system consists of three non-covalently linked subunits termed IL-2R alpha, IL-2R beta, and IL-2R gamma. The IL-2R alpha 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-2R alpha releases the entire extracellular domain of IL-2R alpha thereby generating a 219 amino acid soluble protein called soluble IL-2R alpha (sIL-2R alpha). The homodimeric form binds IL-2 (KD=10mM) and facilitates IL-2 signaling. The secreted sIL-2R alpha 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-2R alpha is a 24.8 kDa protein containing 219 amino acid residues consisting of only the extracellular domain of IL-2R alpha. Due to glycosylation, IL-2R alpha migrates with an apparent molecular mass of approximately 40-50 kDa by SDS-PAGE gel, under reducing and non-reducing conditions.

• Synonyms:

  soluble IL-2 receptor, TAC-antigen, CD25 antigen, IL2RA; CD25; IL2R; TCGFR; IDDM10

• CAS Number:

  9000-83-3

• NCBI Gene ID:

  3559

• UniProt:

  P01589

• Accession Number:

  NP_000408.1

• Accession Number mRNA:

  NM_000417.2

• Gene Location:

  10p15-p14

• Host:

  CHO

• Origin Species:

  Human

• Species Reactivity:

  Human

• Sequence:

  ELCDDDPPEI PHATFKAMAY KEGTMLNCEC KRGFRRIKSG SLYMLCTGNS SHSSWDNQCQ CTSSATRNTT KQVTPQPEEQ KERKTTEMQS PMQPVDQASL PGHCREPPPW ENEATERIYH FVVGQMVYYQ CVQGYRALHR GPAESVCKMT HGKTRWTQPQ LICTGEMETS QFPGEEKPQA SPEGRPESET SCLVTTTDFQ IQTEMAATME TSIFTTEYQ

• Detection Range:

  Determined by its ability to increase the proliferation effect of IL-2 in murine CTLL-2 cells. In the presence of 1 ng/ml of recombinant IL-2, the expected ED50 for this effect is between 0.5 - 1.5 µg/ml.

• Endotoxin:

  < 0.1 ng/µg of protein (<1EU/µg)

• Purity:

  > 98% by SDS-PAGE & HPLC analyses

• Length:

  219

• Form:

  Lyophilized

• Molecular Weight:

  24.8 kDa

• Shipping Conditions:

  Room Temperature