Thermally activated charge transport in microbial protein nanowires

S Lampa-Pastirk, JP Veazey, KA Walsh, GT Feliciano… - Scientific reports, 2016 - nature.com
The bacterium Geobacter sulfurreducens requires the expression of conductive protein
filaments or pili to respire extracellular electron acceptors such as iron oxides and uranium …

Electrically conductive pili from pilin genes of phylogenetically diverse microorganisms

DJF Walker, RY Adhikari, DE Holmes, JE Ward… - The ISME …, 2018 - academic.oup.com
The possibility that bacteria other than Geobacter species might contain genes for
electrically conductive pili (e-pili) was investigated by heterologously expressing pilin genes …

The blind men and the filament: understanding structures and functions of microbial nanowires

SE Yalcin, NS Malvankar - Current opinion in chemical biology, 2020 - Elsevier
Extracellular electron transfer via filamentous protein appendages called 'microbial
nanowires' has long been studied in Geobacter and other bacteria because of their crucial …

Molecular and Electronic Structure of the Peptide Subunit of Geobacter sulfurreducens Conductive Pili from First Principles

GT Feliciano, AJR da Silva, G Reguera… - The Journal of …, 2012 - ACS Publications
The respiration of metal oxides by the bacterium Geobacter sulfurreducens requires the
assembly of a small peptide (the GS pilin) into conductive filaments termed pili. We gained …

An Escherichia coli Chassis for Production of Electrically Conductive Protein Nanowires

T Ueki, DJF Walker, TL Woodard, KP Nevin… - ACS synthetic …, 2020 - ACS Publications
Geobacter sulfurreducens' pilin-based electrically conductive protein nanowires (e-PNs) are
a revolutionary electronic material. They offer novel options for electronic sensing …

Aromatic amino acids required for pili conductivity and long-range extracellular electron transport in Geobacter sulfurreducens

M Vargas, NS Malvankar, PL Tremblay, C Leang… - MBio, 2013 - Am Soc Microbiol
It has been proposed that Geobacter sulfurreducens requires conductive pili for long-range
electron transport to Fe (III) oxides and for high-density current production in microbial fuel …

Exceptionally widespread nanomachines composed of type IV pilins: the prokaryotic Swiss Army knives

JL Berry, V Pelicic - FEMS microbiology reviews, 2015 - academic.oup.com
Prokaryotes have engineered sophisticated surface nanomachines that have allowed them
to colonize Earth and thrive even in extreme environments. Filamentous machineries …

The Low Conductivity of Geobacter uraniireducens Pili Suggests a Diversity of Extracellular Electron Transfer Mechanisms in the Genus Geobacter

Y Tan, RY Adhikari, NS Malvankar, JE Ward… - Frontiers in …, 2016 - frontiersin.org
Studies on the mechanisms for extracellular electron transfer in Geobacter species have
primarily focused on Geobacter sulfurreducens, but the poor conservation of genes for some …

Structure of Geobacter cytochrome OmcZ identifies mechanism of nanowire assembly and conductivity

Y Gu, MJ Guberman-Pfeffer, V Srikanth, C Shen… - Nature …, 2023 - nature.com
OmcZ nanowires produced by Geobacter species have high electron conductivity (> 30 S
cm− 1). Of 111 cytochromes present in G. sulfurreducens, OmcZ is the only known nanowire …

U(VI) Reduction by Diverse Outer Surface c-Type Cytochromes of Geobacter sulfurreducens

R Orellana, JJ Leavitt, LR Comolli… - Applied and …, 2013 - Am Soc Microbiol
Early studies with Geobacter sulfurreducens suggested that outer-surface c-type
cytochromes might play a role in U (VI) reduction, but it has recently been suggested that …