The IL-1 family is comprised of 11 structurally related ligands, including recently re-named IL-36 alpha (IL-1F6), beta (IL-1F8) and gamma (IL-1F9). IL-36gamma is highly expressed in psoriatic plaques and in tissues containing epithelial cells. IL-36gamma signals through the IL-1Rrp2 (IL-1R6) receptor, which is primarily expressed on certain dendritic cells. The interaction of the IL-1Rrp2 receptor with IL-36 ligands induces dendritic cell maturation and activation. IL-36gamma also functions as an agonist of NF-kappaB, and can stimulate the inflammatory response in bronchial epithelial cells. Recombinant Human IL-36gamma is a 17.0 kDa protein containing 152 amino acid residues.