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- W4387563513 abstract "RNase III is a dsRNA-specific endoribonuclease, highly conserved in bacteria and eukarya. In this study, we analysed the effects of inactivation of RNase III on the transcriptome and the phenotype of the facultative phototrophic α-proteobacterium Rhodobacter sphaeroides. RNA-seq revealed an unexpectedly high amount of genes with increased expression located directly downstream to the rRNA operons. Chromosomal insertion of additional transcription terminators restored wild type-like expression of the downstream genes, indicating that RNase III may modulate the rRNA transcription termination in R. sphaeroides. Furthermore, we identified RNase III as a major regulator of quorum-sensing autoinducer synthesis in R. sphaeroides. It negatively controls the expression of the autoinducer synthase CerI by reducing cerI mRNA stability. In addition, RNase III inactivation caused altered resistance against oxidative stress and impaired formation of photosynthetically active pigment-protein complexes. We also observed an increase in the CcsR small RNAs that were previously shown to promote resistance to oxidative stress. Taken together, our data present interesting insights into RNase III-mediated regulation and expand the knowledge on the function of this important enzyme in bacteria." @default.
- W4387563513 created "2023-10-13" @default.
- W4387563513 creator A5014502924 @default.
- W4387563513 creator A5048658410 @default.
- W4387563513 creator A5078913965 @default.
- W4387563513 date "2023-10-12" @default.
- W4387563513 modified "2023-10-13" @default.
- W4387563513 title "<scp>RNase III</scp> participates in control of quorum sensing, pigmentation and oxidative stress resistance in <i>Rhodobacter sphaeroides</i>" @default.
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