Cytochrome OmcS Is Not Essential for Extracellular Electron Transport via Conductive Pili in Geobacter sulfurreducens Strain KN400
Xinying Liu, Dawn E. Holmes, David J. F. Walker, Yang Li, David Meier, Samantha Pinches, Trevor L. Woodard, Jessica A. Smith
Abstract
-type cytochrome. In addition, there is debate about the importance of OmcS filaments in the mechanism of extracellular electron transport to insoluble electron acceptors by G. sulfurreducens. It has been suggested that filaments comprised of OmcS rather than e-pili are the predominant conductive filaments expressed by G. sulfurreducens. However, the results presented here, along with multiple other sources of evidence, indicate that OmcS filaments cannot be the primary, conductive, protein nanowires expressed by G. sulfurreducens.
Topics & Concepts
Geobacter sulfurreducensPilinPilusGeobacterElectron transferElectron transport chainExtracellularCytochromeBiophysicsCytochrome cBacterial outer membraneChemistryStrain (injury)BacteriaMicrobiologyBiologyBiochemistryBiofilmPhotochemistryEscherichia coliEnzymeMitochondrionGeneGeneticsAnatomyMicrobial Fuel Cells and BioremediationElectrochemical sensors and biosensorsWastewater Treatment and Nitrogen Removal