The present invention relates to a cellular transport system for bringing a sulfonic acid construct which carries a cargo into a cell and releasing the cargo in the cell's cytoplasm, the cellular transport system comprising: (i) a sulfonate transporter located in the cytoplasm membrane of the cell wherein said sulfonate transporter is capable of transporting said sulfonic acid construct across the cytoplasm membrane into the cytoplasm; (ii) a γ-glutamyl transferase (GGT; EC 2.3.2.2) which is modified to be located in the cytoplasm of the cell, wherein said γ-glutamyl transferase is capable of hydrolyzing said sulfonic acid construct so as to release the cargo. Moreover, the present invention relates to the use of a cellular transport system for bringing a sulfonic acid construct which contains a cargo into a cell and releasing the cargo in the cell's cytoplasm. Further, the present invention relates to a γ-glutamyl transferase for hydrolyzing a sulfonic acid construct which contains a cargo.
本发明涉及一种细胞运输系统,用于将携带货物的
磺酸构造体带入细胞并在细胞质中释放货物,所述细胞运输系统包括:(i)位于细胞质膜中的
磺酸转运蛋白,其中所述
磺酸转运蛋白能够将所述
磺酸构造体跨越细胞质膜运输至细胞质;(ii)改性为位于细胞质中的γ-谷
氨酰转移酶(GGT;
EC 2.3.2.2),其中所述γ-谷
氨酰转移酶能够
水解所述
磺酸构造体以释放货物。此外,本发明涉及使用细胞运输系统将携带货物的
磺酸构造体带入细胞并在细胞质中释放货物。此外,本发明涉及用于
水解携带货物的
磺酸构造体的γ-谷
氨酰转移酶。