Synthesis of ε-N-propionyl-, ε-N-butyryl-, and ε-N-crotonyl-lysine containing histone H3 using the pyrrolysine system
Chem. Commun., 2013, DOI: 10.1039/C2CC37836A, 49, 379-381, published on 01.01.2013
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.