A flow cytometry-based screen for synthetic riboswitches.

A flow cytometry-based screen for synthetic riboswitches.
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DOI:
10.1093/nar/gkn924
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发表时间:
2009-01
影响因子:
14.9
通讯作者:
Gallivan JP
Gallivan JP
中科院分区:
生物学2区
文献类型:
--
作者:
Lynch SA;Gallivan JP

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Riboswitches regulate gene expression through direct, small molecule–mRNA interactions. The creation of new synthetic riboswitches from in vitro selected aptamers benefits from rapid, high-throughput methods for identifying switches capable of triggering dramatic changes in gene expression in the presence of a desired ligand. Here we present a flow cytometry-based screen for identifying synthetic riboswitches that induce robust increases in gene expression in the presence of theophylline. The performance characteristics of our newly identified riboswitches exceed those of previously described natural and synthetic riboswitches. Sequencing data and structure probing experiments reveal the ribosome binding site to be an important determinant of how well a switch performs and may provide insights into the design of new synthetic riboswitches.
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