RRC ID 56344
Author Tsutsui M, Tanaka M, Marui T, Yokota K, Yoshida T, Arima A, Tonomura W, Taniguchi M, Washio T, Okochi M, Kawai T.
Title Identification of Individual Bacterial Cells through the Intermolecular Interactions with Peptide-Functionalized Solid-State Pores.
Journal Anal Chem
Abstract Bioinspired pore sensing for selective detection of flagellated bacteria was investigated. The Au micropore wall surface was modified with a synthetic peptide designed from toll-like receptor 5 (TLR5) to mimic the pathogen-recognition capability. We found that intermolecular interactions between the TLR5-derived recognition peptides and flagella induce ligand-specific perturbations in the translocation dynamics of Escherichia coli, which facilitated the discrimination between the wild-type and flagellin-deletion mutant (ΔfliC) by the resistive pulse patterns thereby demonstrating the sensing of bacteria at a single-cell level. These results provide a novel concept of utilizing weak intermolecular interactions as a recognition probes for single-cell microbial identification.
Volume 90(3)
Pages 1511-1515
Published 2018-2-6
DOI 10.1021/acs.analchem.7b04950
PMID 29350898
MeSH Escherichia coli / cytology* Flagellin / chemistry Flagellin / genetics Humans Mutation Peptides / chemistry* Toll-Like Receptor 5 / chemistry*
IF 6.785
Times Cited 13
Resource
Prokaryotes E. coli BW25113 Keio JW1908