Thomas L Williams, Irshad M Taily, Lewis Hatton, Andrey A Berezin, Yi-Lin Wu, Vicent Moliner, Katarzyna Świderek, Yu-Hsuan Tsai, Louis Y P Luk
Secondary amines, due to their reactivity, can transform protein templates into catalytically active entities, accelerating the development of artificial enzymes. However, existing methods, predominantly reliant on modified ligands or N-terminal prolines, impose significant limitations on template selection. Here, genetic code expansion was used to break this boundary, enabling secondary amines to be incorporated into alternative proteins and positions of choice. Pyrrolysine analogues carrying different secondary amines, namely unnatural amino acids 1-3, could be incorporated into superfolder green fluorescent protein (sfGFP), multidrug-binding LmrR and nucleotide-binding dihydrofolate reductase (DHFR)...
March 28, 2024: Angewandte Chemie