Bacillus subtilis ypaA gene regulation mechanism by FMN riboswitch

Bacillus subtilis ypaA gene regulation mechanism by FMN riboswitch We studied the regulation of the Bacillus subtilis ypaA gene-encoding riboflavin-transporter by FMN riboswitch. Using translational fusions of the leader region of wild-type ypaA gene with the lacZ-reporter gene in the leader region we showed that in vivo ypaA gene expression decreased more than 10-fold in the presence of endogenous FMN. Introduction of two nucleotide substitutions providing stabilization of the sequester hairpins results in almost complete repression of reporter gene expression. Using toeprint assay in vitro it has been shown that FMN presence inhibits the formation of the 30S initiation complexint the ypaA gene leader mRNA. Our results support the model of ypaA gene regulation whereby FMN binding with the ypaA gene leader sequence results in translation suppression through the sequestering of the SD-sequence. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Bacillus subtilis ypaA gene regulation mechanism by FMN riboswitch

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Publisher
Pleiades Publishing
Copyright
Copyright © 2014 by Pleiades Publishing, Inc.
Subject
Biomedicine; Human Genetics; Animal Genetics and Genomics; Microbial Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795414030089
Publisher site
See Article on Publisher Site

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