Regulation of Neisseria meningitidis cytochrome bc1 components by NrrF, a Fur-controlled small noncoding RNA.

Abstract:

:NrrF is a small regulatory RNA of the human pathogen Neisseria meningitidis. NrrF was previously shown to repress succinate dehydrogenase (sdhCDAB) under control of the ferric uptake regulator (Fur). Here, we provide evidence that cytochrome bc 1 , encoded by the polycistronic mRNA petABC, is a NrrF target as well. We demonstrated differential expression of cytochrome bc 1 comparing wild-type meningococci and meningococci expressing NrrF when sufficient iron is available. Using a gfp-reporter system monitoring translational control and target recognition of sRNA in Escherichia coli, we show that interaction between NrrF and the 5' untranslated region of the petABC mRNA results in its repression. The NrrF region essential for repression of petABC was identified by site-directed mutagenesis and is fully conserved among meningococci. Our results provide further insights into the mechanism by which Fur controls essential components of the N. meningitidis respiratory chain. Adaptation of cytochrome bc 1 complex component levels upon iron limitation is post-transcriptionally regulated via the small regulatory RNA NrrF.

journal_name

FEBS Open Bio

journal_title

FEBS open bio

authors

Pannekoek Y,Huis In 't Veld R,Schipper K,Bovenkerk S,Kramer G,Speijer D,van der Ende A

doi

10.1002/2211-5463.12266

subject

Has Abstract

pub_date

2017-08-05 00:00:00

pages

1302-1315

issue

9

issn

2211-5463

pii

FEB412266

journal_volume

7

pub_type

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