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Manufactured by BioVendor

sIL-6Rα Human HEK293 cells

  • Regulatory status:RUO
  • Type:Recombinant protein
  • Source:HEK293 cells
  • Other names:soluble IL-6 receptor alpha, B cell stimulatory factor-2, CD126
  • Species:Human
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Cat. No. Size Price

RBG10006SRA005 5 µg
RBG10006SRA020 20 µg
RBG10006SRA100 100 μg
PubMed Product Details
Technical Data


Recombinant protein


IL-6 mediates its biological effects through the type I IL-6 receptor system that consists of two chains, IL-6Rα and gp130. While the IL-6Rα chain is the binding component specific to IL-6, the gp130 chain only transmits signals of IL-6 when bound to IL-6Rα. The gp130 can also transmit signals from LIF, OSM, CNTF, IL-11 and CT-1 in conjunction with other receptor subunits. The low-affinity binding site for IL-6 is composed of IL-6Rα alone. IL-6Rα is expressed in a wide range of cells, including T cells, fibroblasts and macrophages. Soluble IL-6Rα, which consists of only the extracellular domain of the IL-6Rα chain, acts as an agonist of IL-6 activity at low concentrations. Recombinant Human sIL-6Rα is a 37.6 kDa protein consisting of the extracellular domain of the IL-6Rα chain (339 amino acid residues).

Amino Acid Sequence



HEK293 cells



Biological Activity

The ED 50 was determined by its ability to intensify the IL-6 induced growth inhibition of murine M1 cells is ≤ 5.0 ng/ml, in the presence of 20 ng/ml of rhIL-6.


Endotoxin level is <0.1 ng/μg of protein (<1EU/μg).


Centrifuge the vial prior to opening. Reconstitute in 1× 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.




Research topic

Immune Response, Infection and Inflammation

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