Recombinant Human SPARC 是Ca+2 结合的糖蛋白,与形态发生、重塑、细胞迁移和增值相关。 Synonyms rHuSPARC; BM-40; Osteonectin ; 重组人的富含半胱氨酸的酸性蛋白 Species HumanSource E. coli Accession P09486 Gene ID 6678 Molecular Weight Approximately 36.1 kDa AA Sequence MSYYHHHHHH DYDIPTTENL YFQGAMGSAP QQEALPDETE VVEETVAEVT EVSVGANPVQ VEVGEFDDGA EETEEEVVAE NPCQNHHCKH GKVCELDENN TPMCVCQDPT SCPAPIGEFE KVCSNDNKTF DSSCHFFATK CTLEGTKKGH KLHLDYIGPC KYIPPCLDSE LTEFPLRMRD WLKNVLVTLY ERDEDNNLLT EKQKLRVKKI HENEKRLEAG DHPVELLARD FE Biological Activity The ED50 is <3.0 μg/mL as measured by its ability to inhibit the cell growth of Mv1Lu mink lung epithelial cells, corresponding to a specific activity of >333 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 SPARC (rHuSPARC) to 0.1-1.0 mg/mL using sterile distilled water or aqueous buffer containing 0.1% BSA. Storage & Stability Lyophilized recombinant Human SPARC (rHuSPARC) 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 SPARC (secreted protein, acidic and rich in cysteine) is the founding member of a family of secreted matricellular proteins with similar domain structure. SPARC shows context specific effects, but generally inhibits adhesion, spreading and proliferation, and promotes collagen matrix formation. For endothelial cells, SPARC disrupts focal adhesions and binds and sequesters PDGF and VEGF[1][2]. |