Acetogenic bacteria utilize light-driven electrons as an energy source for autotrophic growth

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dc.contributor.authorJin, Sangrakko
dc.contributor.authorJeon, Yaleko
dc.contributor.authorJeon, Min Sooko
dc.contributor.authorShin, Jongohko
dc.contributor.authorSong, Yosebko
dc.contributor.authorKang, Seulgiko
dc.contributor.authorBae, Jiyunko
dc.contributor.authorCho, Suhyungko
dc.contributor.authorLee, Jung-Kulko
dc.contributor.authorKim, Dong Ripko
dc.contributor.authorCho, Byung-Kwanko
dc.date.accessioned2021-03-30T01:10:27Z-
dc.date.available2021-03-30T01:10:27Z-
dc.date.created2021-03-30-
dc.date.issued2021-03-
dc.identifier.citationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, v.118, no.9-
dc.identifier.issn0027-8424-
dc.identifier.urihttp://hdl.handle.net/10203/282176-
dc.description.abstractAcetogenic bacteria use cellular redox energy to convert CO2 to acetate using the Wood-Ljungdahl (WL) pathway. Such redox energy can be derived from electrons generated from H-2 as well as from inorganic materials, such as photoresponsive semiconductors. We have developed a nanoparticle-microbe hybrid system in which chemically synthesized cadmium sulfide nanoparticles (CdS-NPs) are displayed on the cell surface of the industrial acetogen Clostridium autoethanogenum. The hybrid system converts CO2 into acetate without the need for additional energy sources, such as H-2, and uses only light-induced electrons from CdS-NPs. To elucidate the underlying mechanism by which C autoethanogenum uses electrons generated from external energy sources to reduce CO2, we performed transcriptional analysis. Our results indicate that genes encoding the metal ion or flavin-binding proteins were highly up-regulated under CdS-driven autotrophic conditions along with the activation of genes associated with the WL pathway and energy conservation system. Furthermore, the addition of these cofactors increased the CO2 fixation rate under light-exposure conditions. Our results demonstrate the potential to improve the efficiency of artificial photosynthesis systems based on acetogenic bacteria integrated with photoresponsive nanoparticles.-
dc.languageEnglish-
dc.publisherNATL ACAD SCIENCES-
dc.titleAcetogenic bacteria utilize light-driven electrons as an energy source for autotrophic growth-
dc.typeArticle-
dc.identifier.wosid000625304300050-
dc.identifier.scopusid2-s2.0-85101614500-
dc.type.rimsART-
dc.citation.volume118-
dc.citation.issue9-
dc.citation.publicationnamePROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-
dc.identifier.doi10.1073/pnas.2020552118-
dc.contributor.localauthorCho, Byung-Kwan-
dc.contributor.nonIdAuthorJeon, Yale-
dc.contributor.nonIdAuthorJeon, Min Soo-
dc.contributor.nonIdAuthorLee, Jung-Kul-
dc.contributor.nonIdAuthorKim, Dong Rip-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthoracetogenic bacteria-
dc.subject.keywordAuthorartificial photosynthesis-
dc.subject.keywordAuthorcadmium sulfide nanoparticle-
dc.subject.keywordAuthorextracellular electron transfer-
dc.subject.keywordAuthorClostridium autoethanogenum-
dc.subject.keywordPlusCARBON-DIOXIDE-
dc.subject.keywordPlusMICROBIAL ELECTROSYNTHESIS-
dc.subject.keywordPlusCOMMODITY CHEMICALS-
dc.subject.keywordPlusFUELS-
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