2023
Structure of Geobacter cytochrome OmcZ identifies mechanism of nanowire assembly and conductivity
Gu Y, Guberman-Pfeffer M, Srikanth V, Shen C, Giska F, Gupta K, Londer Y, Samatey F, Batista V, Malvankar N. Structure of Geobacter cytochrome OmcZ identifies mechanism of nanowire assembly and conductivity. Nature Microbiology 2023, 8: 284-298. PMID: 36732469, PMCID: PMC9999484, DOI: 10.1038/s41564-022-01315-5.Peer-Reviewed Original ResearchConceptsNanowire assembliesHigh electron conductivityExtracellular electron transportNanowire networksExtracellular electron acceptorsG. sulfurreducensElectron conductivityCryogenic electron microscopy structureNanowiresHigh conductivityElectron microscopy structureSerine proteasesDifferent biochemical environmentsElectron transportMicroscopy structureDiverse speciesGeobacter speciesSulfurreducensConductivityImportant bacteriaCharge interactionsElectron acceptorBiochemical environmentSpeciesIdentifies mechanisms
2021
Making protons tag along with electrons
Guberman-Pfeffer MJ, Malvankar NS. Making protons tag along with electrons. Biochemical Journal 2021, 478: 4093-4097. PMID: 34871365, DOI: 10.1042/bcj20210592.Peer-Reviewed Original ResearchConceptsExtracellular electron transferProtein engineering strategiesNanowiresBioelectronic applicationsElectron/proton transferEngineering strategiesPeriplasmic cytochromesSoil microbesBioenergetic machineryPili filamentsExtracellular acceptorsGeobacter sulfurreducensElectron transferRecent studiesHarsh environmentsOxidation of nutrientsAliphatic residuesElectron acceptorCellsOMCElectronsFermentationEnergy generationBiofuelsSulfurreducens
2016
A Simple and Low‐Cost Procedure for Growing Geobacter sulfurreducens Cell Cultures and Biofilms in Bioelectrochemical Systems
O'Brien JP, Malvankar NS. A Simple and Low‐Cost Procedure for Growing Geobacter sulfurreducens Cell Cultures and Biofilms in Bioelectrochemical Systems. Current Protocols In Microbiology 2016, 43: a.4k.1-a.4k.27. PMID: 27858972, PMCID: PMC5726868, DOI: 10.1002/cpmc.20.Peer-Reviewed Original ResearchConceptsAnaerobic microorganismsGlobal biogeochemical cyclingModel organismsBacterial cell cultureBiogeochemical cyclingGeobacter sulfurreducensAnaerobic environmentMicroorganismsCell culturesCentral roleProduction of bioenergyOrganismsEnvironmental processesBioelectrochemical systemsSulfurreducensLow-cost assemblyBiofilmsMajor hurdleNutrientsAssemblyCultivation
2013
Engineering Geobacter sulfurreducens to produce a highly cohesive conductive matrix with enhanced capacity for current production
Leang C, Malvankar N, Franks A, Nevin K, Lovley D. Engineering Geobacter sulfurreducens to produce a highly cohesive conductive matrix with enhanced capacity for current production. Energy & Environmental Science 2013, 6: 1901-1908. DOI: 10.1039/c3ee40441b.Peer-Reviewed Original ResearchWild-type strainG. sulfurreducens genomeGeobacter sulfurreducensWild-type biofilmsCurrent-producing biofilmsSimple genetic manipulationProduction of piliPilZ domainGenetic manipulationStrain CL-1Charge transfer resistanceCL-1Conductive matrixMicrobial fuel cellsConductive biofilmsBioelectronic materialsPotential applicationsEnergy applicationsBiofilmsGreater conductivityBiofilm productionGraphite electrodeTransfer resistanceBiofilm propertiesSulfurreducens
2012
Cover Picture: Supercapacitors Based on c‐Type Cytochromes Using Conductive Nanostructured Networks of Living Bacteria (ChemPhysChem 2/2012)
Malvankar N, Mester T, Tuominen M, Lovley D. Cover Picture: Supercapacitors Based on c‐Type Cytochromes Using Conductive Nanostructured Networks of Living Bacteria (ChemPhysChem 2/2012). ChemPhysChem 2012, 13: 365-365. DOI: 10.1002/cphc.201290005.Peer-Reviewed Original ResearchSustainable energy storage devicesSuperior electrochemical performanceElectron storage capacityEnergy storage devicesNanostructured networkProtein nanowiresPorous architectureC-type cytochromesElectrochemical performanceMetallic-like conductivityStorage devicesSupercapacitorsProtein engineeringGeobacter sulfurreducensStorage capacityRedox reactionsFirst demonstrationHydrous natureNanowiresNetworkLiving bacteriaSitu electrochemistryDevicesSulfurreducensEngineering
2010
Bacterial biofilms: the powerhouse of a microbial fuel cell
Franks A, Malvankar N, Nevin K. Bacterial biofilms: the powerhouse of a microbial fuel cell. Biofuels 2010, 1: 589-604. DOI: 10.4155/bfs.10.25.Peer-Reviewed Original ResearchGenetic engineering studiesC-type cytochromesSpecialized biological processesDifferent bacterial speciesBiological processesSuch speciesBacterial speciesGeobacter sulfurreducensMicrobial fuel cellsBacterial biofilmsConductive biofilmsCell basisProton accumulationPure cultureSpeciesBiofilmsCellsFuel cellsElectron transferHigh current densityConsiderable distanceSulfurreducensCytochromeElectrode surfaceEngineering studies