Journal
CURRENT OPINION IN STRUCTURAL BIOLOGY
Volume 19, Issue 3, Pages 251-259Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.sbi.2009.02.002
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Funding
- National Institutes of Health [GM073618]
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Regulatory mRNA elements or ribo switches specifically control the expression of a large number of genes in response to various cellular metabolites. The basis for selectivity of regulation is programmed in the evolutionarily conserved metabolite-sensing regions of riboswitches, which display a plethora of sequence and structural variants. Recent X-ray structures of two distinct SAM riboswitches and the sensing domains of the Mg(2+) lysine, and FMN riboswitches have uncovered novel recognition principles and provided molecular details underlying the exquisite specificity of metabolite binding by RNA. These and earlier structures constitute the majority of widespread riboswitch classes and, together with riboswitch folding studies, improve our understanding of the mechanistic principles involved in riboswitch-mediated gene expression control.
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