Recently new lysine modifications were detected in histones and other proteins. Using the pyrrolysine amber suppression system we genetically inserted three of the new amino acids ε-N-propionyl-, ε-N-butyryl-, and ε-N-crotonyl-lysine site specifically into histone H3. The lysine at position 9 (H3 K9), which is known to be highly modified in chromatin, was replaced by these unnatural amino acids.
最近在组蛋白和其他蛋白质中检测到新的赖
氨酸修饰。使用
吡咯赖
氨酸琥珀抑制系统,我们将三个新
氨基酸 ε-N-丙酰-、ε-N-丁酰-和 ε-N-
巴豆酰-赖
氨酸位点特异性插入组蛋白 H3 中。已知染色质中高度修饰的第 9 位赖
氨酸 (H3 K9) 被这些非天然
氨基酸取代。