作者:Eric Block、Squire J. Booker、Sonia Flores-Penalba、Graham N. George、Sivaji Gundala、Bradley J. Landgraf、Jun Liu、Stephene N. Lodge、M. Jake Pushie、Sharon Rozovsky、Abith Vattekkatte、Rama Yaghi、Huawei Zeng
DOI:10.1002/cbic.201600266
日期:2016.9.15
Fluorinated amino acids: Trifluoroselenomethionine, a new unnatural amino acid, shows enhanced methioninase‐induced cytotoxicity, relative to selenomethionine, toward human colon cancer cells. Surprisingly, E. coli given 9:1 trifluoroselenomethionine/methionine mainly afford proteins containing selenomethionine units. The removal of the trifluoromethyl group in E. coli is enzymatically catalyzed.
氟化氨基酸:三氟硒代蛋氨酸是一种新的非天然氨基酸,相对于硒代蛋氨酸,对人类结肠癌细胞表现出增强的蛋氨酸酶诱导的细胞毒性。令人惊讶的是,给予9:1三氟硒代蛋氨酸/蛋氨酸的大肠杆菌主要提供含有硒代蛋氨酸单元的蛋白质。大肠杆菌中三氟甲基的去除是通过酶催化的。