2024
Outer membrane vesicles and the outer membrane protein OmpU govern Vibrio cholerae biofilm matrix assembly
Potapova A, Garvey W, Dahl P, Guo S, Chang Y, Schwechheimer C, Trebino M, Floyd K, Phinney B, Liu J, Malvankar N, Yildiz F. Outer membrane vesicles and the outer membrane protein OmpU govern Vibrio cholerae biofilm matrix assembly. MBio 2024, 15: e03304-23. PMID: 38206049, PMCID: PMC10865864, DOI: 10.1128/mbio.03304-23.Peer-Reviewed Original ResearchConceptsBiofilm matrix assemblyOuter membrane proteinsOuter membrane protein OmpUOuter membrane vesiclesBiofilm formationBiofilm matrixMatrix assemblyMatrix proteinsBiofilm architectureExtracellular DNAPresence of outer membrane proteinsCausative agent of choleraMembrane vesiclesAgent of choleraBiofilm matrix proteinsBiofilm matrix componentsVibrio cholerae</i>Single-cell force spectroscopyCell surface adhesion forceMatrix proteomeVibrio cholerae</i>.OmpUHuman pathogensMicrobial communitiesEnvironmental survival
2022
Microbial biofilms as living photoconductors due to ultrafast electron transfer in cytochrome OmcS nanowires
Neu J, Shipps CC, Guberman-Pfeffer MJ, Shen C, Srikanth V, Spies JA, Kirchhofer ND, Yalcin SE, Brudvig GW, Batista VS, Malvankar NS. Microbial biofilms as living photoconductors due to ultrafast electron transfer in cytochrome OmcS nanowires. Nature Communications 2022, 13: 5150. PMID: 36071037, PMCID: PMC9452534, DOI: 10.1038/s41467-022-32659-5.Peer-Reviewed Original ResearchConceptsUltrafast electron transferElectron transferPhotoconductive atomic force microscopyFemtosecond transient absorption spectroscopyQuantum dynamics simulationsMicrobial electron transferAtomic force microscopyTransient absorption spectroscopyValue-added chemicalsIndividual nanowiresWhole-cell catalysisPhotoconductive materialForce microscopyCarrier densityCatalytic performanceNanowiresAbsorption spectroscopyPhotoactive proteinsEfficient productionPhotoconductorsSynthetic photosensitizersDynamics simulationsGeobacter sulfurreducensBiodegradable materialsElectronic interface
2021
Roadmap on emerging concepts in the physical biology of bacterial biofilms: from surface sensing to community formation
Wong GCL, Antani JD, Lele PP, Chen J, Nan B, Kühn MJ, Persat A, Bru JL, Høyland-Kroghsbo NM, Siryaporn A, Conrad JC, Carrara F, Yawata Y, Stocker R, Brun Y, Whitfield GB, Lee CK, de Anda J, Schmidt WC, Golestanian R, O’Toole G, Floyd KA, Yildiz FH, Yang S, Jin F, Toyofuku M, Eberl L, Nomura N, Zacharoff LA, El-Naggar MY, Yalcin SE, Malvankar NS, Rojas-Andrade MD, Hochbaum AI, Yan J, Stone HA, Wingreen NS, Bassler BL, Wu Y, Xu H, Drescher K, Dunkel J. Roadmap on emerging concepts in the physical biology of bacterial biofilms: from surface sensing to community formation. Physical Biology 2021, 18: 10.1088/1478-3975/abdc0e. PMID: 33462162, PMCID: PMC8506656, DOI: 10.1088/1478-3975/abdc0e.Peer-Reviewed Original ResearchConceptsBacterial biofilmsPhysiology of microbesBiofilm microbiologyCommunities of bacteriaSingle-cell behaviorWork of physicistsAtomic physicsRecent important discoveriesNew physicsMatter physicsCellular organizationPhysical biologyPhysicsBiofilmsBiologyPhysicistsSurprising behaviorEnergy flowImportant discoveriesIntense attentionDivision of laborMicrobesMicrobiologyCommunity behaviorOpposite strategy
2019
Structure of Microbial Nanowires Reveals Stacked Hemes that Transport Electrons over Micrometers
Wang F, Gu Y, O’Brien J, Yi SM, Yalcin SE, Srikanth V, Shen C, Vu D, Ing NL, Hochbaum AI, Egelman EH, Malvankar NS. Structure of Microbial Nanowires Reveals Stacked Hemes that Transport Electrons over Micrometers. Cell 2019, 177: 361-369.e10. PMID: 30951668, PMCID: PMC6720112, DOI: 10.1016/j.cell.2019.03.029.Peer-Reviewed Original Research
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 ResearchMeSH KeywordsAnaerobiosisBiofilmsCell Culture TechniquesElectricityElectrochemical TechniquesGeobacterConceptsAnaerobic microorganismsGlobal biogeochemical cyclingModel organismsBacterial cell cultureBiogeochemical cyclingGeobacter sulfurreducensAnaerobic environmentMicroorganismsCell culturesCentral roleProduction of bioenergyOrganismsEnvironmental processesBioelectrochemical systemsSulfurreducensLow-cost assemblyBiofilmsMajor hurdleNutrientsAssemblyCultivationReply to 'Measuring conductivity of living Geobacter sulfurreducens biofilms'
Malvankar NS, Rotello VM, Tuominen MT, Lovley DR. Reply to 'Measuring conductivity of living Geobacter sulfurreducens biofilms'. Nature Nanotechnology 2016, 11: 913-914. PMID: 27821844, DOI: 10.1038/nnano.2016.191.Peer-Reviewed Original Research