Nucleobase-involved native chemical ligation: a novel reaction between an oxanine nucleobase and N-terminal cysteine for oligonucleotide–peptide conjugation

Abstract

In bioconjugation chemistry, achieving a target-specific reaction for a non-modified amino acid is challenging. Here, we report a novel nucleobase-involved native chemical ligation (NbCL) that allows a site-specific oligonucleotide–peptide conjugation via a new S–N acyl transfer reaction between an oxanine nucleobase and N-terminal cysteine.