The invention relates to a method of making a polypeptide comprising an orthogonal functional group, said orthogonal functional group being comprised by an aliphatic amino acid or amino acid derivative, said method comprising providing a host cell; providing a nucleic acid encoding the polypeptide of interest; providing a tRNA-tRNA synthetase pair orthogonal to said host cell; adding an amino acid or amino acid derivative comprising the orthogonal functional group of interest, wherein said amino acid or amino acid derivative is a substrate for said orthogonal tRNA synthetase, wherein said amino acid or amino acid derivative has an aliphatic carbon backbone; and incubating to allow incorporation of said amino acid or amino acid derivative into the polypeptide of interest via the orthogonal tRNA-tRNA synthetase pair. The invention also relates to certain amino acids, and to polypeptides comprising same.
本发明涉及一种制备具有正交功能基团的
多肽的方法,所述正交功能基团由脂肪族
氨基酸或
氨基酸衍
生物组成,所述方法包括提供宿主细胞;提供编码所需
多肽的核酸;提供与所述宿主细胞正交的tRNA-tRNA合成酶对;添加包含所需正交功能基团的
氨基酸或
氨基酸衍
生物,其中所述
氨基酸或
氨基酸衍
生物是所述正交tRNA合成酶的底物,其中所述
氨基酸或
氨基酸衍
生物具有脂肪族碳骨架;孵育以允许通过正交tRNA-tRNA合成酶对将所述
氨基酸或
氨基酸衍
生物并入所需
多肽中。本发明还涉及某些
氨基酸和包含其的
多肽。