Description_x000D_ General description_x000D_ HumanKine interleukin-23 (IL-23) is expressed as a heterodimeric 55 kDa cytokine composed of two glycosylated and disulfide linked subunits (p40 cystine linked to p19). Production in human HEK 293 cells offers authentic glycosylation. Cytokines produced in Sf9 or Sf21 cells have post-translational modifications, which are not human-like._x000D_ Interleukin-23 (IL-23) is a pro-inflammatory cytokine. It is mostly synthesized by activated dendritic cells and macrophages. It is a 20.7kDa protein with 189 amino acids. IL-23 is mostly expressed on activated/memory T cells and natural killer (NK) cells. This gene is located on human chromosome 12q13.3._x000D_ Biochem/physiol Actions_x000D_ Interleukin-23 (IL-23) plays a major role in cutaneous immune-mediated inflammatory diseases like psoriasis, allergic contact dermatitis and atopic dermatitis. It is involved in cellular immunity, driving the expansion, stabilization and survival of Th17 cells._x000D_ Analysis Note_x000D_ The specific activity was determined by the dose-dependent secretion of h-IFN-γ or IL-8 from human PBMC._x000D_ Legal Information_x000D_ HumanKine is a registered trademark of HumanZyme Inc.