Alkyl detection facilitated by a DNA conjugate with an α-hemolysin nanopore

Abstract

Herein an α-hemolysin nanopore was utilized to detect a DNA conjugate, where a propyl linker was attached to the 20-mer oligonucleotides at each end of an individual strand. The studies showed the alkyl linker produced a clear current change when translocating through the protein pore, which could be used to sense and identify small organic molecule at the single-molecule level.