convergent loss of abc transporter genes from clostridioides difficile genomes is associated with impaired tyrosine uptake and p-cresol production

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ID: 212901
2018
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Ranked #193 of 875 articles by views in journal of magnetic resonance (san diego, calif : 1997)

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Abstract
We report the frequent, convergent loss of two genes encoding the substrate-binding protein and the ATP-binding protein of an ATP-binding cassette (ABC) transporter from the genomes of unrelated Clostridioides difficile strains. This specific genomic deletion was strongly associated with the reduced uptake of tyrosine and phenylalanine and production of derived Stickland fermentation products, including p-cresol, suggesting that the affected ABC transporter had been responsible for the import of aromatic amino acids. In contrast, the transporter gene loss did not measurably affect bacterial growth or production of enterotoxins. Phylogenomic analysis of publically available genome sequences indicated that this transporter gene deletion had occurred multiple times in diverse clonal lineages of C. difficile, with a particularly high prevalence in ribotype 027 isolates, where 48 of 195 genomes (25%) were affected. The transporter gene deletion likely was facilitated by the repetitive structure of its genomic location. While at least some of the observed transporter gene deletions are likely to have occurred during the natural life cycle of C. difficile, we also provide evidence for the emergence of this mutation during long-term laboratory cultivation of reference strain R20291.
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steglich2018frontiersconvergent Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Matthias Steglich;Matthias Steglich;Julia D. Hofmann;Julia D. Hofmann;Julia Helmecke;Julia Helmecke;Johannes Sikorski;Cathrin Spröer;Thomas Riedel;Thomas Riedel;Boyke Bunk;Boyke Bunk;Jörg Overmann;Jörg Overmann;Jörg Overmann;Meina Neumann-Schaal;Meina Neumann-Schaal;Meina Neumann-Schaal;Ulrich Nübel;Ulrich Nübel;Ulrich Nübel
Journal journal of magnetic resonance (san diego, calif : 1997)
Year 2018
DOI
10.3389/fmicb.2018.00901
URL
http://journal.frontiersin.org/article/10.3389/fmicb.2018.00901/full
Keywords
metabolism repetitive dna genome stability clostridium difficile

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