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- W2133281339 endingPage "753" @default.
- W2133281339 startingPage "740" @default.
- W2133281339 abstract "ABSTRACT Bacillus subtilis swims in liquid media and swarms over solid surfaces, and it encodes two sets of flagellar stator homologs. Here, we show that B. subtilis requires only the MotA/MotB stator during swarming motility and that the residues required for stator force generation are highly conserved from the Proteobacteria to the Firmicutes . We further find that mutants that abolish stator function also result in an overproduction of the extracellular polymer poly-γ-glutamate (PGA) to confer a mucoid colony phenotype. PGA overproduction appeared to be the result of an increase in the expression of the pgs operon that encodes genes for PGA synthesis. Transposon mutagenesis was conducted to identify insertions that abolished colony mucoidy and disruptions in known transcriptional regulators of PGA synthesis (Com and Deg two-component systems) as well as mutants defective in transcription-coupled DNA repair (Mfd)-reduced expression of the pgs operon. A final class of insertions disrupted proteins involved in the assembly of the flagellar filament (FliD, FliT, and FlgL), and these mutants did not reduce expression of the pgs operon, suggesting a second mechanism of PGA control." @default.
- W2133281339 created "2016-06-24" @default.
- W2133281339 creator A5018269479 @default.
- W2133281339 creator A5037777338 @default.
- W2133281339 creator A5088830722 @default.
- W2133281339 date "2014-02-15" @default.
- W2133281339 modified "2023-09-23" @default.
- W2133281339 title "Defects in the Flagellar Motor Increase Synthesis of Poly-γ-Glutamate in Bacillus subtilis" @default.
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