Genetically programmed expression of proteins containing the unnatural amino acid phenylselenocysteine
    45.
    发明授权
    Genetically programmed expression of proteins containing the unnatural amino acid phenylselenocysteine 有权
    含有非天然氨基酸苯基硒代半胱氨酸的蛋白质的遗传程序表达

    公开(公告)号:US08217145B2

    公开(公告)日:2012-07-10

    申请号:US12225261

    申请日:2007-03-13

    摘要: The invention relates to orthogonal pairs of tRNAs and aminoacyl-tRNA synthetases that can incorporate the unnatural amino acid phenylselenocysteine into proteins produced in eubacterial host cells such as E. coli. The invention provides, for example but not limited to, novel orthogonal aminoacyl-tRNA synthetases, polynucleotides encoding the novel synthetase molecules, methods for identifying and making the novel synthetases, methods for producing proteins containing the unnatural amino acid phenylselenocysteine and translation systems. The invention further provides methods for producing modified proteins (e.g., lipidated proteins) through targeted modification of the phenylselenocysteine residue in a protein.

    摘要翻译: 本发明涉及tRNA和氨酰-tRNA合成酶的正交对,其可以将非天然氨基酸苯硒代半胱氨酸掺入到在细菌宿主细胞如大肠杆菌中产生的蛋白质中。 本发明提供了例如但不限于新型正交氨酰-tRNA合成酶,编码新合成酶分子的多核苷酸,用于鉴定和制备新合成酶的方法,用于产生含有非天然氨基酸苯基硒半胱氨酸的蛋白质的翻译方法和翻译系统。 本发明还提供了通过蛋白质中的苯基硒代半胱氨酸残基的靶向修饰产生修饰的蛋白质(例如,脂质化蛋白质)的方法。