The recombinant YFP (Yellow Fluorescent Protein) is expressed and purified from transformed E. coli using a method that ensures high purity and maximal YFP fluorescence. Endotoxin has been removed, so the protein is suitable for in vivo injection or cell culture applications. The protein is a 26.4kD monomer with 238 amino acids, Ex./Em. = 525/538 nm, extinction coefficient 27390.||Endotoxin: ≤ 0.1ng/ug||Storage and Stability:|Lyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Reconstituted product is stable for 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
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USbio全称United States Biological,位于麻省斯万普斯科特(Swampscott, MA)。全美**的抗原抗体和生化试剂供应商,目前向全球六十余个国家的科研工作者提供约50,000种抗体、抗原和生化试剂,以质量**闻名。主要产品种类包括:抗体、生化试剂、基因克隆相关产品、培养基、生长因子等细胞因子、分子生物学试剂。美国US Biological公司是生物化学和生物学试剂的专业生产商,产品服务于免疫学,分子生物学,分子遗传学,体外诊断,组织培养等科研领域。产品精确度高,质量稳定,产品数量巨大,提供70,000多种抗体、抗原和生化试剂等。