دورية أكاديمية
أعرض في EDS

Microbial biofilms as living photoconductors due to ultrafast electron transfer in cytochrome OmcS nanowires.

التفاصيل البيبلوغرافية
العنوان: Microbial biofilms as living photoconductors due to ultrafast electron transfer in cytochrome OmcS nanowires.
المؤلفون: Neu J; Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA. jens.neu@yale.edu.; Microbial Sciences Institute, Yale University, West Haven, CT, USA. jens.neu@yale.edu., Shipps CC; Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA.; Microbial Sciences Institute, Yale University, West Haven, CT, USA., Guberman-Pfeffer MJ; Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA.; Microbial Sciences Institute, Yale University, West Haven, CT, USA., Shen C; Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA.; Microbial Sciences Institute, Yale University, West Haven, CT, USA., Srikanth V; Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA.; Microbial Sciences Institute, Yale University, West Haven, CT, USA., Spies JA; Department of Chemistry, Yale University, New Haven, CT, USA., Kirchhofer ND; Oxford Instruments Asylum Research, Santa Barbara, CA, USA., Yalcin SE; Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA.; Microbial Sciences Institute, Yale University, West Haven, CT, USA., Brudvig GW; Department of Chemistry, Yale University, New Haven, CT, USA., Batista VS; Department of Chemistry, Yale University, New Haven, CT, USA., Malvankar NS; Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT, USA. nikhil.malvankar@yale.edu.; Microbial Sciences Institute, Yale University, West Haven, CT, USA. nikhil.malvankar@yale.edu.
المصدر: Nature communications [Nat Commun] 2022 Sep 07; Vol. 13 (1), pp. 5150. Date of Electronic Publication: 2022 Sep 07.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.
اللغة: English
بيانات الدورية: Publisher: Nature Pub. Group Country of Publication: England NLM ID: 101528555 Publication Model: Electronic Cited Medium: Internet ISSN: 2041-1723 (Electronic) Linking ISSN: 20411723 NLM ISO Abbreviation: Nat Commun Subsets: MEDLINE
أسماء مطبوعة: Original Publication: [London] : Nature Pub. Group
مواضيع طبية MeSH: Nanowires*, Biofilms ; Cytochromes ; Electron Transport ; Electrons
مستخلص: Light-induced microbial electron transfer has potential for efficient production of value-added chemicals, biofuels and biodegradable materials owing to diversified metabolic pathways. However, most microbes lack photoactive proteins and require synthetic photosensitizers that suffer from photocorrosion, photodegradation, cytotoxicity, and generation of photoexcited radicals that are harmful to cells, thus severely limiting the catalytic performance. Therefore, there is a pressing need for biocompatible photoconductive materials for efficient electronic interface between microbes and electrodes. Here we show that living biofilms of Geobacter sulfurreducens use nanowires of cytochrome OmcS as intrinsic photoconductors. Photoconductive atomic force microscopy shows up to 100-fold increase in photocurrent in purified individual nanowires. Photocurrents respond rapidly (<100 ms) to the excitation and persist reversibly for hours. Femtosecond transient absorption spectroscopy and quantum dynamics simulations reveal ultrafast (~200 fs) electron transfer between nanowire hemes upon photoexcitation, enhancing carrier density and mobility. Our work reveals a new class of natural photoconductors for whole-cell catalysis.
(© 2022. The Author(s).)
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معلومات مُعتمدة: DP2 AI138259 United States AI NIAID NIH HHS
المشرفين على المادة: 0 (Cytochromes)
تواريخ الأحداث: Date Created: 20220907 Date Completed: 20220909 Latest Revision: 20220926
رمز التحديث: 20240628
مُعرف محوري في PubMed: PMC9452534
DOI: 10.1038/s41467-022-32659-5
PMID: 36071037
قاعدة البيانات: MEDLINE
الوصف
تدمد:2041-1723
DOI:10.1038/s41467-022-32659-5