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- W3008702992 abstract "RyeA/SraC is a cis-encoded small RNA (sRNA), which act as an anti-toxin to RpoS-regulated RyeB toxin in Escherichia coli. Ectopic expression of RyeA was reported to diminish the RyeB accumulation by serving as a RNA trap. Lower abundance of RyeA in the early exponential growth phase turned out to be the outcome of its degradation by RNase BN/Z. In the current study, we show that RyeA is an acid stress inducible sRNA, and global stress responsive factor RpoS appeared to be inessential in RyeA induction. Although, ryeB-pphA dicistronic transcript at low pH condition was stimulated by ∼4-fold, however, RyeB population was found to be decreased by > 50% under the same condition by the decoy action of enhanced RyeA accumulation. Investigation of the mechanism of RyeA induceduction at low pH in the exponential phase, revealed that RNase BN/Z, which catabolizes RyeA in the exponential phase, appeared to be highly sensitive to low pH stress. Both mRNA and protein level of RNase BN transpired to be decreased to <10% of their initial population. The expression of RyeA under acid stress is regulated by a feed-forward mechanism to normalize the RyeB profusion." @default.
- W3008702992 created "2020-03-06" @default.
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- W3008702992 date "2020-04-01" @default.
- W3008702992 modified "2023-09-24" @default.
- W3008702992 title "A novel mechanism of RyeA/SraC induction under acid stress" @default.
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- W3008702992 doi "https://doi.org/10.1016/j.bbrc.2020.02.085" @default.
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