Ms1 RNA increases the amount of RNA polymerase in Mycobacterium smegmatis.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG33__%2F19%3AN0000005" target="_blank" >RIV/60162694:G33__/19:N0000005 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388971:_____/19:00504361 RIV/68378050:_____/19:00504361 RIV/00216208:11310/19:10393364 RIV/68407700:21340/19:00327594

Výsledek na webu

<a href="https://www.ncbi.nlm.nih.gov/pubmed/30427073" target="_blank" >https://www.ncbi.nlm.nih.gov/pubmed/30427073</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/mmi.14159" target="_blank" >10.1111/mmi.14159</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ms1 RNA increases the amount of RNA polymerase in Mycobacterium smegmatis.

Popis výsledku v původním jazyce

Ms1 is a sRNA recently found in mycobacteria and several other actinobacterial species. Ms1 interacts with the RNA polymerase (RNAP) core devoid of sigma factors, which differs from 6S RNA that binds to RNAP holoenzymes containing the primary sigma factor. Here we show that Ms1 is the most abundant non-rRNA transcript in stationary phase in Mycobacterium smegmatis. The accumulation of Ms1 stems from its high-level synthesis combined with decreased degradation. We identify the Ms1 promoter, PMs1 , and cis-acting elements important for its activity. Furthermore, we demonstrate that PNPase (an RNase) contributes to the differential accumulation of Ms1 during growth. Then, by comparing the transcriptomes of wt and ΔMs1 strains from stationary phase, we reveal that Ms1 affects the intracellular level of RNAP. The absence of Ms1 results in decreased levels of the mRNAs encoding β and β' subunits of RNAP, which is also reflected at the protein level. Thus, the ΔMs1 strain has a smaller pool of RNAPs available when the transcriptional demand increases. This contributes to the inability of the ΔMs1 strain to rapidly react to environmental changes during outgrowth from stationary phase.

Název v anglickém jazyce

Ms1 RNA increases the amount of RNA polymerase in Mycobacterium smegmatis.

Popis výsledku anglicky

Ms1 is a sRNA recently found in mycobacteria and several other actinobacterial species. Ms1 interacts with the RNA polymerase (RNAP) core devoid of sigma factors, which differs from 6S RNA that binds to RNAP holoenzymes containing the primary sigma factor. Here we show that Ms1 is the most abundant non-rRNA transcript in stationary phase in Mycobacterium smegmatis. The accumulation of Ms1 stems from its high-level synthesis combined with decreased degradation. We identify the Ms1 promoter, PMs1 , and cis-acting elements important for its activity. Furthermore, we demonstrate that PNPase (an RNase) contributes to the differential accumulation of Ms1 during growth. Then, by comparing the transcriptomes of wt and ΔMs1 strains from stationary phase, we reveal that Ms1 affects the intracellular level of RNAP. The absence of Ms1 results in decreased levels of the mRNAs encoding β and β' subunits of RNAP, which is also reflected at the protein level. Thus, the ΔMs1 strain has a smaller pool of RNAPs available when the transcriptional demand increases. This contributes to the inability of the ΔMs1 strain to rapidly react to environmental changes during outgrowth from stationary phase.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10606 - Microbiology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Molecular Microbiology

ISSN

0950-382X

e-ISSN

1365-2958

Svazek periodika

111

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

18

Strana od-do

354-372

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85058241739