Description: Protein function: Function as an agonist of NF-kappa B activation through the orphan IL-1-receptor-related protein 2/IL1RL2. Could constitute part of an independent signaling system analogous to interleukin-1 alpha (IL-1A), beta (IL-1B) receptor agonist and interleukin-1 receptor type I (IL-1R1), that is present in epithelial barriers and takes part in local inflammatory response. [The UniProt Consortium]