Naturally occurring peptide–nucleobase hybrids are rare. Here Pei et al. report the discovery and biosynthetic studies of the first peptide–nucleobase hybrid catalyzed by an RRE–YcaO–dehydrogenase complex from a RiPP pathway, and show the biotransformation in a substrate-assisted manner.
- Zeng-Fei Pei
- Natalia M. Vior
- Satish K. Nair