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J Bacteriol. 2012 Mar;194(5):1088-91. doi: 10.1128/JB.06078-11. Epub 2011 Dec 22.

An epigenetic switch mediates bistable expression of the type 1 pilus genes in Streptococcus pneumoniae.

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  • 1Division of Infectious Diseases, Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Abstract

Expression of the pneumococcal type 1 pilus is bistable and positively regulated by the transcription factor RlrA. RlrA is also known to positively control its own expression. Here we present evidence that bistable expression of the type 1 pilus is mediated by the positive-feedback loop controlling rlrA expression.

PMID:
22194460
[PubMed - indexed for MEDLINE]
PMCID:
PMC3294793
Free PMC Article
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