Provided is a method for synthesizing a protein, into which a nucleobase amino acid (NBA) is introduced at a desired position, that comprises: a step for preparing mRNA into which a modified codon is inserted at a desired position downstream of an initiation codon; and a step for translating the aforesaid mRNA into a protein in the presence of tRNA, said tRNA recognizing the modified codon and being acylated with the NBA. Also provided is a ribozyme that catalyzes the aminoacylation of tRNA and comprises two RNA molecules.
                            本发明提供了一种合成蛋白质的方法,其中在所需位置引入了核碱基
氨基酸(NBA),该方法包括:制备 mRNA 的步骤,其中在启动密码子下游的所需位置插入一个修饰密码子;以及在 tRNA 存在的情况下将上述 mRNA 翻译成蛋白质的步骤,所述 tRNA 识别修饰密码子并与 NBA 进行酰化。还提供了一种
核糖酶,它能催化 tRNA 的
氨基酰化,由两个 RNA 分子组成。