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  • I5771 - Interleukin-6 Receptor Soluble Fragment human

I5771 Sigma

Interleukin-6 Receptor Soluble Fragment human

recombinant, expressed in Sf21 cells, ≥97% (SDS-PAGE), lyophilized powder

Synonym: IL-6 sR



Analysis Note

The receptor mediated activity of human IL-6 receptor soluble fragment is measured by its ability to increase the IL-6 inhibition of M1 cells.

Physical form

Lyophilized from a 0.2 μm filtered solution in phosphate buffered saline containing 1.25 mg bovine serum albumin.


Interleukin-6 Receptor soluble fragment elicits a 50% increase in IL-6 activity in cell based assay at a concentration (EC50) of 1-10 ng/ml.

General description

Interleukin-6 is a pleotropic cytokine involved in hematopoiesis, inflammation and immune response. IL-6 is secreted by macrophages, dendritic cells and B cells, in response to TNF-α, PGDF and IL-1. The signaling by IL-6 is mediated by heterodimeric receptor, IL-6R, comprising of IL-6Rα (soluble factor) and gp130 (sometimes called IL-6Rβ). Gp130 is crucial component for downstream signal transduction. In response to IL-6, gp130 activates kinases of JAK family, STATs, MAPK and Ras proteins. IL-6R-mediated signaling is essential for normal development of T and B cells and has been implicated in many diseases such as rheumatoid arthritis, Crohn disease, sepsis, fever, systemic lupus erythematosus, osteoporosis and insulin resistance
Interleukin-6 Receptor soluble fragment specifically binds and inhibits the activity of human IL-6 in free form or when bound to cell surface receptors.

Price and Availability

Milli-Q® Water Purification Solutions
Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Protocols & Articles
Peer-Reviewed Papers


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