Recombinant Human Heregulin-1 beta1 属于结构相关的多肽生长因子家族,来源于选择性剪接基因,诱导 Fn14 在 MCF7 细胞中表达。 Synonyms rHuHeregulin-1 β1; ARIA; HRG; NRG1; Neuregulin-1 ; 重组人调蛋白-1 β1 Species HumanSource E. coli Accession Q02297 Gene ID 3084 Molecular Weight Approximately 7.6 kDa AA Sequence MSHLVKCAEK EKTFCVNGGE CFMVKDLSNP SRYLCKCPNE FTGDRCQNYV MASFYKHLGI EFMEAE Biological Activity The ED50 is <1 ng/mL as measured by MCF-7 cells, corresponding to a specific activity of >1 × 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 Heregulin-1 beta1 (rHuHeregulin-1 β1) to 100 µg/mL using ddH2O. Storage & Stability Lyophilized recombinant Human Heregulin-1 beta1 (rHuHeregulin-1 β1) 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 HRG1-β1 activates HER2/HER3 signaling and up-regulate Fn14 gene expression in parental MCF7 cells. HRG1-β1-mediated Fn14 up-regulation in MCF7/HER2-18 cells is required for maximal MMP-9 production[1]. |