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Implication of CcpN in the regulation of a novel untranslated RNA (SR1) in Bacillus subtilis
Author(s) -
Licht Andreas,
Preis Sven,
Brantl Sabine
Publication year - 2005
Publication title -
molecular microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.857
H-Index - 247
eISSN - 1365-2958
pISSN - 0950-382X
DOI - 10.1111/j.1365-2958.2005.04810.x
Subject(s) - biology , bacillus subtilis , genetics , plasmid , rna , genome , untranslated region , small nucleolar rna , escherichia coli , antisense rna , transposable element , long non coding rna , dna , computational biology , gene , bacteria
Summary Antisense‐RNAs have been investigated in detail over the past 20 years as the principal regulators in accessory DNA elements such as plasmids, phages and transposons. However, only a few examples of chromosomally encoded bacterial antisense RNAs were known. Meanwhile, ≈70 small non‐coding RNAs from the Escherichia coli genome have been found, the functions of the majority of which remain to be elucidated. Only one systematic search has been performed for Gram‐positive bacteria, so far. Here, we report the identification of a novel small (205 nt) non‐translated RNA – SR1 – encoded in the Bacillus subtilis genome. SR1 was predicted by a computational approach and verified by Northern blotting. Knockout or overexpression of SR1 did not affect growth. SR1 was derepressed under conditions of gluconeogenesis, but repressed under glycolytic conditions. Two regulatory levels could be identified, one involving CcpA, the second, more important, involving the recently identified regulator CcpN.