Biotin is a small biomolecule important for many cellular processes. Most importantly for biotechnology applications, biotin is ammenable to conjugation to proteins for use in biochemical assays. Biotin has a very strong affinity for avidin and streptavidin; an attraction that is the strongest and most stable non-covalent interaction known. Beta-galactosidase (beta-gal; beta-gal) is an enzyme that hydrolyzes beta-galactosides (such as lactose and various glycoproteins) into simple sugars. Beta-galactosidase is routinely used as a reporter in biochemical experiments as well as a marker for gene expression experiments in E. coli. Beta-galactosidase can be used to cleave the chemical X-gal that forms an intense blue product that can easily be quantified.
Aviva Systems Biology总部位于加利福尼亚州圣迭戈，在中国北京设有办公室，专注于为研究需求提供多克隆和单克隆抗体、ELISA试剂盒、蛋白质和定制服务。Aviva Systems Biology生产了24,000种经过验证的多克隆抗体，并提供近20,000种ELISA试剂盒，定制实验室服务包括蛋白表达和纯化、抗体开发，以及ELISA的开发、验证和生产。Aviva Systems Biology为与独特物种和靶标相关的研究提供独特工具，研究领域包括转录因子、癌症、心血管、细胞生物学、DNA损伤和修复、表观遗传学、信号转导、细胞分化、干细胞生物学等等。
