A eubacterial riboswitch class that senses the coenzyme tetrahydrofolate.

A eubacterial riboswitch class that senses the coenzyme tetrahydrofolate.
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DOI:
10.1016/j.chembiol.2010.05.020
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发表时间:
2010-07-30
影响因子:
--
通讯作者:
Breaker RR
Breaker RR
中科院分区:
生物1区
文献类型:
--
作者:
Ames TD;Rodionov DA;Weinberg Z;Breaker RR

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Comparative sequence analyses of bacterial genomes are revealing many structured RNA motifs that function as metabolite-binding riboswitches. We have identified an RNA motif frequently positioned in the 5′ UTRs of folate transport and biosynthesis genes in Firmicute genomes. Biochemical experiments confirm that representatives of this newfound RNA class selectively bind derivatives of the vitamin folate, including di- and tetrahydrofolate coenzymes. In addition, representatives of this aptamer class occasionally reside upstream of RNA structures that are predicted to control translation initiation in response to ligand binding. These findings expand the number of coenzymes that are directly sensed by RNA and reveal possible riboswitch-controlled regulons that respond to changes in single-carbon metabolism.
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