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The synthesis of specifically isotope labelled fluorotryptophan and its use in mammalian cell-based protein expression for 19F-NMR applications
Chemical Communications ( IF 4.3 ) Pub Date : 2024-11-04 , DOI: 10.1039/d4cc04789c
Giorgia Toscano, Martina Rosati, Letizia Barbieri, Katharina Maier, Lucia Banci, Enrico Luchinat, Robert Konrat, Roman J. Lichtenecker

19 F nuclei serve as versatile sensors for detecting protein interactions and dynamics in biomolecular NMR spectroscopy. Although various methods have been developed to incorporate fluorine-containing aromatic residues into proteins using E. coli or cell-free expression techniques, similar approaches for protein production in mammalian cell lines remain limited. Here, we present a cost-effective synthetic route to obtain selectively deuterated, carbon-13 labeled fluorotryptophan and demonstrate its use in introducing 19F–13C spin pairs into carbonic anhydrase 2 and superoxide dismutase, following an expression protocol utilizing HEK cells.

中文翻译:


特异性同位素标记的氟色氨酸的合成及其在哺乳动物细胞蛋白表达中用于 19F-NMR 应用



19 F 原子核用作检测生物分子 NMR 波谱中蛋白质相互作用和动力学的多功能传感器。尽管已经开发了多种方法,使用大肠杆菌或无细胞表达技术将含氟芳香族残基掺入蛋白质中,但在哺乳动物细胞系中生产蛋白质的类似方法仍然有限。在这里,我们提出了一种经济高效的合成路线,以获得选择性氘化的碳 13 标记的荧光色氨酸,并展示了其在将 19F-13C 自旋对引入碳酸酐酶 2 和超氧化物歧化酶中的用途,遵循利用 HEK 细胞的表达方案。
更新日期:2024-11-09
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