Electro-polarization of protein-like substances accelerates trans-cell-wall electron transfer in microbial extracellular respiration.

ABSTRACT: Electrical stimulation has been used to strengthen microbial extracellular electron transfer (EET), however, the deep-seated reasons remain unclear. Here we reported that Bacillus subtilis, a typical gram-positive bacterium capable of extracellular respiration, obtained a higher EET capacity after the electrical domestication. After the electrical domestication, the current generated by the EET of B. subtilis was 23.4-fold that of the control group without pre-domestication. Multiple lines of evidence in bacterial cells of B. subtilis, their cell walls, and a model tripeptide indicated that the polarization of amide groups after the electrical stimulation forwarded the H-bonds recombination and radical generation of protein-like substances to develop extracellular elec

SUBMITTER: Yu Q 

PROVIDER: S-EPMC9929677 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature