Abstract
The Sinorhizobium meliloti megaplasmid pSymA has previously been implicated in gluconate utilization. We report a locus on pSymA encoding a putative tripartite ATP-independent periplasmic (TRAP) transporter that is required for gluconate utilization. The expression of this locus is negatively regulated by a GntR family regulator encoded adjacent to the transporter operon.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Endopeptidases / genetics
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Endopeptidases / metabolism
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Gene Expression Regulation, Bacterial / physiology
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Gluconates / metabolism*
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Mutation
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Plasmids / chemistry
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Plasmids / genetics*
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Sinorhizobium meliloti / genetics
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Sinorhizobium meliloti / metabolism*
Substances
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Gluconates
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Endopeptidases
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Bacillus polymyxa proteinase
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gluconic acid