Recombinant Human Interleukin-6 Receptor alpha (Sf9 insect cells-expressed) 是一类 I 型跨膜糖蛋白,与 I 型跨膜信号转导蛋白gp130 (CD130)形成复合物,调控 IL-6 的生物学活性。 Synonyms rHuIL-6 Receptor α; gp80; CD126 Species HumanSource Sf9 insect cells Accession P08887 Gene ID 3570 Molecular Weight Approximately 50 kDa AA Sequence HHHHHHDDDD KLAPRRCPAQ EVARGVLTSL PGDSVTLTCP GVEPEDNATV HWVLRKPAAG SHPSRWAGMG RRLLLRSVQL HDSGNYSCYR AGRPAGTVHL LVDVPPEEPQ LSCFRKSPLS NVVCEWGPRS TPSLTTKAVL LVRKFQNSPA EDFQEPCQYS QESQKFSCQL AVPEGDSSFY IVSMCVASSV GSKFSKTQTF QGCGILQPDP PANITVTAVA RNPRWLSVTW QDPHSWNSSF YRLRFELRYR AERSKTFTTW MVKDLQHHCV IHDAWSGLRH VVQLRAQEEF GQGEWSEWSP EAMGTPWTES RSPPAENEVS TPMQALTTNK DDDNILFRDS ANATSLPVQD Biological Activity The ED50 is <50 ng/mL as measured by M1 cells, corresponding to a specific activity of >2 × 104 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-6 Receptor alpha (Sf9 insect cells-expressed) (rHuIL-6 Receptor α) to 100 µg/mL using ddH2O. Storage & Stability Lyophilized recombinant Human Interleukin-6 Receptor alpha (Sf9 insect cells-expressed) (rHuIL-6 Receptor α) 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 It is found that soluble IL-6 receptor alpha-subunit (IL-6Ralpha), with their constitutive IL-6 synthesis, stimulated endothelial cells to synthesize E-selectin, intracellular adhesion molecule-1, vascular cellular adhesion molecule-1, IL-6, and IL-8, and to bind neutrophils. Neutrophils express significant amounts of IL-6Ralpha and upon stimulation shed it: this material activates endothelial cells through a newly constituted IL-6 receptor. Retrograde signaling from PMN activated in the extravascular compartment to surrounding endothelial cells will recruit more and a wider variety of leukocytes. The limiting signal is a soluble receptor, not a cytokine[1]. |