Sarramegna V, Talmont F, Demange P, Milon A
Institut de Pharmacologie et de Biologie Structurale, Toulouse, Cedex 4, France.
Cell Mol Life Sci. 2003 Aug;60(8):1529-46. doi: 10.1007/s00018-003-3168-7.
G-protein-coupled receptors (GPCRs) are of prime importance for cell signal transduction mechanisms and are the target of many current and potential drugs. However, structural data on these membrane proteins is still scarce because of their low natural abundance and the low efficiency of most of the expression systems currently available. This review presents the most important expression systems currently employed for heterologous expression of GPCRs; Escherichia coli, yeast, insect cells and mammalian cells. After briefly recalling the specificity, advantages and limitations of each system, particular emphasis is put on the quantitative comparison of these expression systems in terms of overall expression yield, and on the influence of various factors (primary sequence, origin, cell type, N- and C-terminal tags) on the results.
G蛋白偶联受体(GPCRs)对于细胞信号转导机制至关重要,并且是许多现有及潜在药物的作用靶点。然而,由于这些膜蛋白天然丰度低以及目前大多数可用表达系统效率低下,关于它们的结构数据仍然稀缺。本综述介绍了目前用于GPCRs异源表达的最重要的表达系统;大肠杆菌、酵母、昆虫细胞和哺乳动物细胞。在简要回顾每个系统的特异性、优点和局限性之后,特别强调了这些表达系统在整体表达产量方面的定量比较,以及各种因素(一级序列、来源、细胞类型、N端和C端标签)对结果的影响。