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Article: Influence of outer membrane c-type cytochromes on particle size and activity of extracellular nanoparticles produced by Shewanella oneidensis

TitleInfluence of outer membrane c-type cytochromes on particle size and activity of extracellular nanoparticles produced by Shewanella oneidensis
Authors
KeywordsNanoparticles
Reduction
Shewanella Oneidensis
Silver
Issue Date2013
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/71002188
Citation
Biotechnology And Bioengineering, 2013, v. 110 n. 7, p. 1831-1837 How to Cite?
AbstractThe metal-reducing bacterium Shewanella oneidensis is capable of reducing various metal(loid)s and produces nanoparticles (NPs) extracellularly, in which outer membrane c-type cytochromes (OMCs) have been suggested to play important roles. The objective of this study was to investigate the influence of the OMCs, that is, MtrC and OmcA, on the size and activity of the extracellular silver NPs (AgNPs) and silver sulfide NPs (Ag2S NPs) produced by S. oneidensis MR-1. We found that (i) the lack of OMCs on S. oneidensis cell surface decreased the particle size of the extracellular biogenic AgNPs and Ag2S NPs; (ii) the biogenic AgNPs from the mutant lacking OMCs showed higher antibacterial activity; and (iii) the biogenic Ag2S NPs from the mutant lacking OMCs exhibited higher catalytic activity in methylviologen reduction. The results suggest that it may be possible to control particle size and activity of the extracellular biogenic NPs via controlled expression of the genes encoding surface proteins. In addition, we also reveal that in extracellular biosynthesis of NPs the usually neglected non-cell-associated NPs could have high catalytic activity, highlighting the need of novel methods that can efficiently retain extracellular NPs in the biosynthesis processes. © 2013 Wiley Periodicals, Inc.
Persistent Identifierhttp://hdl.handle.net/10722/185448
ISSN
2015 Impact Factor: 4.243
2015 SCImago Journal Rankings: 1.633
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNg, CKen_US
dc.contributor.authorSivakumar, Ken_US
dc.contributor.authorLiu, Xen_US
dc.contributor.authorMadhaiyan, Men_US
dc.contributor.authorJi, Len_US
dc.contributor.authorYang, Len_US
dc.contributor.authorTang, Cen_US
dc.contributor.authorSong, Hen_US
dc.contributor.authorKjelleberg, Sen_US
dc.contributor.authorCao, Ben_US
dc.date.accessioned2013-07-30T07:32:38Z-
dc.date.available2013-07-30T07:32:38Z-
dc.date.issued2013en_US
dc.identifier.citationBiotechnology And Bioengineering, 2013, v. 110 n. 7, p. 1831-1837en_US
dc.identifier.issn0006-3592en_US
dc.identifier.urihttp://hdl.handle.net/10722/185448-
dc.description.abstractThe metal-reducing bacterium Shewanella oneidensis is capable of reducing various metal(loid)s and produces nanoparticles (NPs) extracellularly, in which outer membrane c-type cytochromes (OMCs) have been suggested to play important roles. The objective of this study was to investigate the influence of the OMCs, that is, MtrC and OmcA, on the size and activity of the extracellular silver NPs (AgNPs) and silver sulfide NPs (Ag2S NPs) produced by S. oneidensis MR-1. We found that (i) the lack of OMCs on S. oneidensis cell surface decreased the particle size of the extracellular biogenic AgNPs and Ag2S NPs; (ii) the biogenic AgNPs from the mutant lacking OMCs showed higher antibacterial activity; and (iii) the biogenic Ag2S NPs from the mutant lacking OMCs exhibited higher catalytic activity in methylviologen reduction. The results suggest that it may be possible to control particle size and activity of the extracellular biogenic NPs via controlled expression of the genes encoding surface proteins. In addition, we also reveal that in extracellular biosynthesis of NPs the usually neglected non-cell-associated NPs could have high catalytic activity, highlighting the need of novel methods that can efficiently retain extracellular NPs in the biosynthesis processes. © 2013 Wiley Periodicals, Inc.en_US
dc.languageengen_US
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/71002188en_US
dc.relation.ispartofBiotechnology and Bioengineeringen_US
dc.subjectNanoparticlesen_US
dc.subjectReductionen_US
dc.subjectShewanella Oneidensisen_US
dc.subjectSilveren_US
dc.titleInfluence of outer membrane c-type cytochromes on particle size and activity of extracellular nanoparticles produced by Shewanella oneidensisen_US
dc.typeArticleen_US
dc.identifier.emailTang, C: tangc@hku.hken_US
dc.identifier.authorityTang, C=rp01765en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/bit.24856en_US
dc.identifier.pmid23381725-
dc.identifier.scopuseid_2-s2.0-84878378115en_US
dc.identifier.hkuros231358-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84878378115&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume110en_US
dc.identifier.issue7en_US
dc.identifier.spage1831en_US
dc.identifier.epage1837en_US
dc.identifier.isiWOS:000319525200004-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridNg, CK=55607734200en_US
dc.identifier.scopusauthoridSivakumar, K=55607784500en_US
dc.identifier.scopusauthoridLiu, X=55607747400en_US
dc.identifier.scopusauthoridMadhaiyan, M=8604572100en_US
dc.identifier.scopusauthoridJi, L=55607745400en_US
dc.identifier.scopusauthoridYang, L=55607991500en_US
dc.identifier.scopusauthoridTang, C=35489259800en_US
dc.identifier.scopusauthoridSong, H=55607918100en_US
dc.identifier.scopusauthoridKjelleberg, S=35478805900en_US
dc.identifier.scopusauthoridCao, B=55607989100en_US

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