Lack of physiological evidence for cytochrome filaments functioning as conduits for extracellular electron transfer

IA Schwarz, B Alsaqri, Y Lekbach, K Henry, S Gorman… - Mbio, 2024 - Am Soc Microbiol
Extracellular cytochrome filaments are proposed to serve as conduits for long-range
extracellular electron transfer. The primary functional physiological evidence has been the …

Cytochrome OmcS is not essential for extracellular electron transport via conductive pili in Geobacter sulfurreducens strain KN400

X Liu, DE Holmes, DJF Walker, Y Li… - Applied and …, 2022 - Am Soc Microbiol
The multi-heme c-type cytochrome OmcS is one of the central components used for
extracellular electron transport in the Geobacter sulfurreducens strain DL-1, but its role in …

Improper Localization of the OmcS Cytochrome May Explain the Inability of the xapD-Deficient Mutant of Geobacter sulfurreducens to Reduce Fe(III) Oxide

KA Flanagan, C Leang, JE Ward, DR Lovley - BioRxiv, 2017 - biorxiv.org
Extracellular electron transfer through a redox-active exopolysaccharide matrix has been
proposed as a strategy for extracellular electron transfer to Fe (III) oxide by Geobacter …

Geobacter Strains Expressing Poorly Conductive Pili Reveal Constraints on Direct Interspecies Electron Transfer Mechanisms

T Ueki, KP Nevin, AE Rotaru, LY Wang, JE Ward… - MBio, 2018 - Am Soc Microbiol
Cytochrome-to-cytochrome electron transfer and electron transfer along conduits of multiple
extracellular magnetite grains are often proposed as strategies for direct interspecies …

Adaptation to Disruption of the Electron Transfer Pathway for Fe(III) Reduction in Geobacter sulfurreducens

C Leang, LA Adams, KJ Chin, KP Nevin… - Journal of …, 2005 - Am Soc Microbiol
Previous studies demonstrated that an outer membrane c-type cytochrome, OmcB, was
involved in Fe (III) reduction in Geobacter sulfurreducens. An OmcB-deficient mutant was …

Magnetite compensates for the lack of a pilin‐associated c‐type cytochrome in extracellular electron exchange

F Liu, AE Rotaru, PM Shrestha… - Environmental …, 2015 - Wiley Online Library
Nanoscale magnetite can facilitate microbial extracellular electron transfer that plays an
important role in biogeochemical cycles, bioremediation and several bioenergy strategies …

GSU1771 regulates extracellular electron transfer and electroactive biofilm formation in Geobacter sulfurreducens: Genetic and electrochemical characterization

A Hernández-Eligio, GA Huerta-Miranda… - …, 2022 - Elsevier
Type IV pili and the> 100c-type cytochromes in Geobacter sulfurreducens are essential for
extracellular electron transfer (EET) towards metal oxides and electrodes. A previous report …

Going wireless: Fe (III) oxide reduction without pili by Geobacter sulfurreducens strain JS-1

JA Smith, PL Tremblay, PM Shrestha… - Applied and …, 2014 - Am Soc Microbiol
Previous studies have suggested that the conductive pili of Geobacter sulfurreducens are
essential for extracellular electron transfer to Fe (III) oxides and for optimal long-range …

Toward establishing minimum requirements for extracellular electron transfer in Geobacter sulfurreducens

T Ueki, LN DiDonato, DR Lovley - FEMS Microbiology Letters, 2017 - academic.oup.com
The highly redundant pathways for extracellular electron transfer in Geobacter
sulfurreducens must be simplified for this microorganism to serve as an effective chassis for …

Interaction studies between periplasmic cytochromes provide insights into extracellular electron transfer pathways of Geobacter sulfurreducens

AP Fernandes, TC Nunes, CM Paquete… - Biochemical …, 2017 - portlandpress.com
Geobacter bacteria usually prevail among other microorganisms in soils and sediments
where Fe (III) reduction has a central role. This reduction is achieved by extracellular …