Syntrophus conductive pili demonstrate that common hydrogen-donating syntrophs can have a direct electron transfer option

摘要

a Transmission electron micrograph showing multiple pili protruding from S. aciditrophicus (pili highlighted with black arrows). b Key characteristics of the predicted amino acid sequence of the S. aciditrophicus pilin monomer. The PilA monomer of G. sulfurreducens that yields conductive pili is shown for comparison. Aromatic amino acid abundance is calculated as a percentage of the mature peptide.