Recombinant Human Oncostatin-M, 227a.a. 是由209個氨基酸組成的多肽鏈。Oncostatin M是屬于IL-6家族的細胞因子,其在造血,間充質干細胞分化,肝再生,心臟重塑,痛覺,炎癥和代謝中具有多種功能。 Synonyms rHuOSM; OSM Species HumanSource E. coli Accession P13725 Gene ID 5008 Molecular Weight Approximately 25.8 kDa AA Sequence AAIGSCSKEY RVLLGQLQKQ TDLMQDTSRL LDPYIRIQGL DVPKLREHCR ERPGAFPSEE TLRGLGRRGF LQTLNATLGC VLHRLADLEQ RLPKAQDLER SGLNIEDLEK LQMARPNILG LRNNIYCMAQ LLDNSDTAEP TKAGRGASQP PTPTPASDAF QRKLEGCRFL HGYHRFMHSV GRVFSKWGES PNRSRRHSPH QALRKGVRRT RPSRKGKRLM TRGQLPR Biological Activity The ED50 is <2 ng/mL as measured by human TF-1 cells, corresponding to a specific activity of >5.0 × 105 units/mg. Appearance Lyophilized powder. Formulation Lyophilized after extensive dialysis against PBS, pH 7.4. Endotoxin Level <1 EU/μg, determined by LAL method. Reconstitution Reconstitute the lyophilized recombinant Human Oncostatin-M, 227a.a. (rHuOSM, 227a.a.) to 0.1-1.0 mg/mL using sterile distilled water or aqueous buffer containing 0.1 % BSA. Storage & Stability Lyophilized recombinant Human Oncostatin-M, 227a.a. (rHuOSM, 227a.a.) is stored at -20°C. After reconstitution, it is stable at 4°C for 1 week 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 Oncostatin M is a cytokine belonging to the IL-6 family that has multiple functions in hematopoiesis, mesenchymal stem cell differentiation, liver regeneration, heart remodeling, nociception, inflammation and metabolism. The full-length Oncostatin M proteins contain between 239 and 263 amino acids which fold into a long-chain four helix-bundle protein with an up-up-down-down topology representative of all other IL-6 family cytokines. Human Oncostatin-M can bind to either the type I receptor complex consisting of gp130 and the LIFR (gp130/LIFRb) or the type II receptor complex consisting of gp130 and the OSMR (gp130/OSMRb). In the murine system Oncostatin-M has been shown to bind with high affinity only to the type II gp130/OSMRb complex[1][2]. Oncostatin-M binds to specific receptor complexes, then activates two major signaling pathways: Janus Kinase-Signal Transducers and Activators of Transcription (JAK-STAT) and Mitogen-Activated Protein Kinase (MAPK), to regulate downstream events[3]. |