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2018-10-08Zeitschriftenartikel DOI: 10.25646/5750
Determination of virulence and fitness genes associated with the pheU, pheV and selC integration sites of LEE-negative food-borne Shiga toxin-producing Escherichia coli strains
dc.contributor.authorSaile, Nadja
dc.contributor.authorSchuh, Elisabeth
dc.contributor.authorSemmler, Torsten
dc.contributor.authorEichhorn, Inga
dc.contributor.authorWieler, Lothar H.
dc.contributor.authorBauwens, Andreas
dc.contributor.authorSchmidt, Herbert
dc.date.accessioned2018-10-26T10:27:01Z
dc.date.available2018-10-26T10:27:01Z
dc.date.issued2018-10-08none
dc.identifier.other10.1186/s13099-018-0271-8
dc.identifier.urihttp://edoc.rki.de/176904/5805
dc.description.abstractBackground: In the current study, nine foodborne “Locus of Enterocyte Effacement” (LEE)-negative Shiga toxin-producing Escherichia coli (STEC) strains were selected for whole genome sequencing and analysis for yet unknown genetic elements within the already known LEE integration sites selC, pheU and pheV. Foreign DNA ranging in size from 3.4 to 57 kbp was detected and further analyzed. Five STEC strains contained an insertion of foreign DNA adjacent to the selC tRNA gene and five and seven strains contained foreign DNA adjacent to the pheU and pheV tRNA genes, respectively. We characterized the foreign DNA insertion associated with selC (STEC O91:H21 strain 17584/1), pheU (STEC O8:H4 strain RF1a and O55:Hnt strain K30) and pheV (STEC O91:H21 strain 17584/1 and O113:H21 strain TS18/08) as examples. Results: In total, 293 open reading frames partially encoding putative virulence factors such as TonB-dependent receptors, DNA helicases, a hemolysin activator protein precursor, antigen 43, anti-restriction protein KlcA, ShiA, and phosphoethanolamine transferases were detected. A virulence type IV toxin-antitoxin system was detected in three strains. Additionally, the ato system was found in one strain. In strain 17584/1 we were able to define a new genomic island which we designated GIselC17584/1. The island contained integrases and mobile elements in addition to genes for increased fitness and those playing a putative role in pathogenicity. Conclusion: The data presented highlight the important role of the three tRNAs selC, pheU, and pheV for the genomic flexibility of E. coli.eng
dc.language.isoengnone
dc.publisherRobert Koch-Institut
dc.rights(CC BY 3.0 DE) Namensnennung 3.0 Deutschlandger
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/de/
dc.subjectSTECeng
dc.subjectFoodeng
dc.subjectpheUeng
dc.subjectpheVeng
dc.subjectselC integration siteeng
dc.subjectGenomic islandeng
dc.subject.ddc610 Medizin und Gesundheitnone
dc.titleDetermination of virulence and fitness genes associated with the pheU, pheV and selC integration sites of LEE-negative food-borne Shiga toxin-producing Escherichia coli strainsnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:0257-176904/5805-7
dc.identifier.doihttp://dx.doi.org/10.25646/5750
dc.type.versionpublishedVersionnone
local.edoc.container-titleGut Pathogensnone
local.edoc.type-nameZeitschriftenartikel
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
local.edoc.container-urlhttps://gutpathogens.biomedcentral.com/articles/10.1186/s13099-018-0271-8none
local.edoc.container-publisher-nameBioMedCentralnone
local.edoc.container-volume10none
local.edoc.container-issue43none
local.edoc.container-reportyear2018none
local.edoc.container-firstpage1none
local.edoc.container-lastpage12none
local.edoc.rki-departmentProjektgruppen/Nachwuchsgruppennone
dc.description.versionPeer Reviewednone

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