The invention relates to orthogonal pairs of tRNAs and aminoacyl-tRNA synthetases that can incorporate the coumarin unnatural amino acid L-(7-hydroxycoumarin-4-yl)ethylglycine into proteins produced in eubacterial host cells such as
E. coli
. The invention provides, for example but not limited to, novel orthogonal synthetases, methods for identifying and making the novel synthetases, methods for producing proteins containing the unnatural amino acid L-(7-hydroxycoumarin-4-yl)ethylglycine and related translation systems.
本发明涉及正交的tRNA和
氨酰-tRNA合成酶对,可以将
香豆素非天然
氨基酸L-(7-羟基
香豆素-4-基)乙基甘
氨酸并入由E. coli等真核细胞宿主细胞产生的蛋白质中。该发明提供了新颖的正交合成酶,用于识别和制备新颖合成酶的方法,以及用于生产含有非天然
氨基酸L-(7-羟基
香豆素-4-基)乙基甘
氨酸的蛋白质和相关翻译系统的方法,例如但不限于。