An Engineered Lantibiotic Synthetase That Does Not Require a Leader Peptide on Its Substrate

Citations Over TimeTop 10% of 2012 papers

Abstract

Ribosomally synthesized and post-translationally modified peptides are a rapidly expanding class of natural products. They are typically biosynthesized by modification of a C-terminal segment of the precursor peptide (the core peptide). The precursor peptide also contains an N-terminal leader peptide that is required to guide the biosynthetic enzymes. For bioengineering purposes, the leader peptide is beneficial because it allows promiscuous activity of the biosynthetic enzymes with respect to modification of the core peptide sequence. However, the leader peptide also presents drawbacks as it needs to be present on the core peptide and then removed in a later step. We show that fusing the leader peptide for the lantibiotic lacticin 481 to its biosynthetic enzyme LctM allows the protein to act on core peptides without a leader peptide. We illustrate the use of this methodology for preparation of improved lacticin 481 analogues containing non-proteinogenic amino acids.

Related Papers

• → Diversity and applications ofBacillusbacteriocins(2010)603 cited
• → Two-peptide bacteriocins produced by lactic acid bacteria(2002)249 cited
• → Antimicrobial Peptides of Lactic Acid Bacteria: Mode of Action, Genetics and Biosynthesis(2000)105 cited
• → Spontaneous resistance inLactococcus lactisIL1403 to the lantibiotic lacticin 3147(2006)32 cited
• → Bacteriocin Detection from Whole Bacteria by Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry(2003)42 cited