Manganese uptake in marine bacteria; the novel MntX transporter is widespread in Roseobacters, Vibrios, Alteromonadales and the SAR11 and SAR116 clades
Identifieur interne : 000490 ( Main/Exploration ); précédent : 000489; suivant : 000491Manganese uptake in marine bacteria; the novel MntX transporter is widespread in Roseobacters, Vibrios, Alteromonadales and the SAR11 and SAR116 clades
Auteurs : Robert T. Green [Royaume-Uni] ; Jonathan D. Todd [Royaume-Uni] ; Andrew W B. Johnston [Royaume-Uni]Source :
- The ISME Journal [ 1751-7362 ] ; 2012.
Abstract
We showed that two very different manganese transporters occur in various important genera of marine bacteria. The ABC transporter encoded by
Url:
DOI: 10.1038/ismej.2012.140
PubMed: 23190726
PubMed Central: 3578558
Affiliations:
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Le document en format XML
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<affiliation wicri:level="1"><nlm:aff id="aff2"><institution>Institute of Food Research, Colney Lane, Norwich Research Park</institution>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Manganese uptake in marine bacteria; the novel MntX transporter is widespread in Roseobacters, Vibrios, Alteromonadales and the SAR11 and SAR116 clades</title>
<author><name sortKey="Green, Robert T" sort="Green, Robert T" uniqKey="Green R" first="Robert T" last="Green">Robert T. Green</name>
<affiliation wicri:level="1"><nlm:aff id="aff1"><institution>School of Biological Sciences, University of East Anglia, Norwich Research Park</institution>
, Norwich,<country>UK</country>
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<country xml:lang="fr">Royaume-Uni</country>
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<affiliation wicri:level="1"><nlm:aff id="aff2"><institution>Institute of Food Research, Colney Lane, Norwich Research Park</institution>
, Norwich,<country>UK</country>
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<country xml:lang="fr">Royaume-Uni</country>
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<affiliation wicri:level="1"><nlm:aff id="aff1"><institution>School of Biological Sciences, University of East Anglia, Norwich Research Park</institution>
, Norwich,<country>UK</country>
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<country xml:lang="fr">Royaume-Uni</country>
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<author><name sortKey="Johnston, Andrew W B" sort="Johnston, Andrew W B" uniqKey="Johnston A" first="Andrew W B" last="Johnston">Andrew W B. Johnston</name>
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, Norwich,<country>UK</country>
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<country xml:lang="fr">Royaume-Uni</country>
<wicri:regionArea># see nlm:aff country strict</wicri:regionArea>
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<series><title level="j">The ISME Journal</title>
<idno type="ISSN">1751-7362</idno>
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<front><div type="abstract" xml:lang="en"><p>We showed that two very different manganese transporters occur in various important genera of marine bacteria. The ABC transporter encoded by <italic>sitABCD</italic>
of the model Roseobacter-clade bacterium <italic>Ruegeria pomeroyi</italic>
DSS-3 is required for Mn<sup>2+</sup>
import and was repressed by the Mur (Manganese uptake regulator) transcriptional regulator in Mn-replete media. Most genome-sequenced Roseobacter strains contain SitABCD, which are in at least two sub-groups, judged by their amino-acid sequences. However, a few Roseobacters, for example, <italic>Roseovarius nubinhibens,</italic>
lack <italic>sitABCD</italic>
, but these contain another gene, <italic>mntX</italic>
, which encodes a predicted inner membrane polypeptide and is preceded by <italic>cis-</italic>
acting Mur-responsive MRS sequences. It was confirmed directly that <italic>mntX</italic>
of <italic>Roseovarius nubinhibens</italic>
encodes a manganese transporter that was required for growth in Mn-depleted media and that its expression was repressed by Mur in Mn-replete conditions. MntX homologues occur in the deduced proteomes of several bacterial species. Strikingly, all of these live in marine habitats, but are in distantly related taxonomic groups, in the γ- and α-proteobacteria. Notably, MntX was prevalent in nearly all strains of Vibrionales, including the important pathogen, <italic>Vibrio cholerae.</italic>
It also occurs in a strain of the hugely abundant <italic>Candidatus</italic>
Pelagibacter (SAR11), and in another populous marine bacterium, <italic>Candidatus</italic>
Puniceispirillum marinum (SAR116). Consistent with this, MntX was abundant in marine bacterial metagenomes, with one sub-type occurring in an as-yet unknown bacterial clade.</p>
</div>
</front>
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<affiliations><list><country><li>Royaume-Uni</li>
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<name sortKey="Green, Robert T" sort="Green, Robert T" uniqKey="Green R" first="Robert T" last="Green">Robert T. Green</name>
<name sortKey="Johnston, Andrew W B" sort="Johnston, Andrew W B" uniqKey="Johnston A" first="Andrew W B" last="Johnston">Andrew W B. Johnston</name>
<name sortKey="Todd, Jonathan D" sort="Todd, Jonathan D" uniqKey="Todd J" first="Jonathan D" last="Todd">Jonathan D. Todd</name>
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