Mouse IL‑36 beta /IL‑1F8 Alexa Fluor™ Plus 680‑conjugated Antibody

Mouse interleukin-36 beta  [IL-36 beta ; also named IL-1F8,  interleukin 1 family member 8, FIL-1 eta (eta) and IL-1H2] is a member of the IL-1 family of proteins (1‑3). IL-1 family members include IL‑1 beta, IL-1 alpha, IL-1ra, IL-18 and IL-1F5 through F10 (4). All family members show a 12 beta -stranded beta -trefoil configuration, and are believed to have arisen from a common ancestral gene that has undergone multiple duplications (4). Although two alternatively spliced transcript variants for human IL-1F8 have been described, to date, only one mouse IL-1F8 isoform is known (3). Mouse IL-1F8 is synthesized as a 183 amino acid (aa) protein that contains no signal sequence, no prosegment and no potential N-linked glycosylation site(s) (1, 2). It is likely that mouse IL-1F8, similarly to its human homologue, is actively secreted (1). Mouse IL-1F8 shares 61% and 74% aa identity with human IL-1F8 isoform 2 and rat IL-1F8, respectively. Within the IL-1 family, IL-1F8 shares 27% sequence with 33%, 32%, 35%, 39% and 28% aa sequence identity with IL-1 ra, IL-1 beta, IL-1F5, F6, F9 and F10, respectively. Cells reported to express IL-1F8 include resting and activated monocytes and B cells (1, 4). The receptor for IL-1F8 is reported to be a combination of IL-1 Rrp2 and IL-1 RAcP (5). Recombinant IL-1F8, along with IL-1F6 and IL-1F9, has been shown to activate the pathway involving NF-kappa B and MAPK in an IL-1Rrp2 dependent manner.