Expanding the chemical diversity of lasso peptide MccJ25 with genetically encoded noncanonical amino acids. Academic Article uri icon


  • Using the amber suppression approach, four noncanonical amino acids (ncAAs) were used to replace existing amino acids at four positions in lasso peptide microcin J25 (MccJ25). The lasso peptide biosynthesis enzymes tolerated all four ncAAs and produced antibiotics with efficacy equivalent to wild-type in some cases. Given the rapid expansion of the genetically encoded ncAA pool, this study is the first to demonstrate an expedient method to significantly increase the chemical diversity of lasso peptides.

published proceedings

  • Chem Commun (Camb)

author list (cited authors)

  • Piscotta, F. J., Tharp, J. M., Liu, W. R., & Link, A. J.

citation count

  • 52

complete list of authors

  • Piscotta, Frank J||Tharp, Jeffery M||Liu, Wenshe R||Link, A James

publication date

  • January 2015