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  • 1
    Language: English
    In: Genes & development, 15 May 2013, Vol.27(10), pp.1073-8
    Description: The abundant RNA-binding proteins CsrA and Hfq each impact bacterial physiology by working in conjunction with small RNAs to control large post-transcriptional regulons. The small RNAs involved were considered mechanistically distinct, regulating mRNAs either directly through Hfq-mediated base-pairing or indirectly by sequestering the global translational repressor CsrA. In this issue of Genes & Development, Jørgensen and colleagues (pp. 1132-1145) blur these distinctions with a dual-mechanism small RNA that acts through both Hfq and CsrA to regulate the formation of bacterial biofilms.
    Keywords: Csra ; Csrb ; Hfq ; Pga ; C-Di-Gmp ; Gene Expression Regulation, Bacterial ; Biofilms -- Growth & Development ; Escherichia Coli -- Genetics ; RNA, Bacterial -- Genetics
    ISSN: 08909369
    E-ISSN: 1549-5477
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  • 2
    Language: English
    In: Genes & development, 01 November 2008, Vol.22(21), pp.2914-25
    Description: Noncoding RNA regulators have been implicated in almost all imaginable cellular processes. Here we review how regulatory small RNAs such as Spot42, SgrS, GlmY, and GlmZ and a cis-encoded ribozyme in glmS mRNA control sugar metabolism. Besides discussing the physiological implications, we show how the study of these molecules contributed to our understanding of the mechanisms and of general principles of RNA-based regulation. These include the post-transcriptional repression or activation of gene expression within polycistronic mRNAs; novel ribonucleoprotein complexes composed of small RNA, Hfq, and/or RNase E; and the hierarchical action of regulatory RNAs.
    Keywords: Carbohydrate Metabolism ; Bacterial Proteins -- Metabolism ; RNA, Bacterial -- Metabolism ; RNA, Untranslated -- Metabolism
    ISSN: 0890-9369
    E-ISSN: 15495477
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  • 3
    Language: English
    In: Genes & Development, 2005, Vol.19(19), pp.2355-2366
    Description: This paper shows that the small RNA MicA (previously SraD) is an antisense regulator of ompA in Escherichia coli. MicA accumulates upon entry into stationary phase and down-regulates the level of ompA mRNA. Regulation of ompA (outer membrane protein A), previously attributed to Hfq/mRNA binding, is lost...
    Keywords: Medical And Health Sciences ; Medicin Och Hälsovetenskap ; Antisense Rna ; Hfq ; Ompa ; Regulatory Rna ; Translational Control
    ISSN: 0890-9369
    E-ISSN: 15495477
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