Recombinant Human Interleukin-33 是一种 Th2 细胞因子,是 ST2L 的特异性配体。 Synonyms rHuIL-33; IL-1F11; NF-HEV; DVS 27 Species HumanSource E. coli Accession O95760 Gene ID 90865 Molecular Weight Approximately 18.0 kDa AA Sequence SITGISPITE YLASLSTYND QSITFALEDE SYEIYVEDLK KDEKKDKVLL SYYESQHPSN ESGDGVDGKM LMVTLSPTKD FWLHANNKEH SVELHKCEKP LPDQAFFVLH NMHSNCVSFE CKTDPGVFIG VKDNHLALIK VDSSENLCTE NILFKLSET Biological Activity The ED50 is <0.5 ng/mL as measured by D10S cells, corresponding to a specific activity of >2.0 × 106 units/mg. Appearance Lyophilized powder. Formulation Lyophilized after extensive dialysis against PBS. Endotoxin Level <0.2 EU/μg, determined by LAL method. Reconstitution Reconstitute the lyophilized recombinant Human Interleukin-33 (rHuIL-33) to 100 µg/mL using ddH2. Storage & Stability Lyophilized recombinant Human Interleukin-33 (rHuIL-33) is stored at -20°C. After reconstitution, it is stable at 4°C for 2 weeks or -20°C for longer. It is recommended to freeze aliquots at -20°C or -80°C for extended storage. Shipping Room temperature in continental US; may vary elsewhere. Background Human IL-33 is a proinflammatory protein that shares structural and functional characteristics with the IL-1 cytokine family. It binds and signals through the IL-1RL1/ST2 receptor activating NF-kappaB and MAP kinases. IL-33 induces production of Th2 cell related cytokines including IL-4, IL-5 and IL-13, and exerts multiple inflammation related bioactivities. The IL-33-ST2 signaling cascade plays some roles in the pathophysiology of chronic allergic conjunctivitis through the activation of mast cells[1]. |