IL-27R alpha (Interleukin 27 receptor alpha) is a subunit of the interleukin-27 receptor, an inflammatory cytokine that possesses extensive immunological functions. IL-27R alphacan be used as a natural IL-27 antagonist[1]. IL-27R alpha/TCCR Protein, Human (HEK293, Fc) is a recombinant protein with a Fc label that is produced by HEK293 cells.