Evidence map›Paper›PMID 26207528›Full record

ArticleMolecular microbiology2015

Mycobacterium tuberculosis oriC sequestration by MtrA response regulator.

Gorla Purushotham, Krishna B Sarva, Ewelina Blaszczyk, Malini Rajagopalan, Murty V Madiraju

Abstract read
In one paragraph

Article in Molecular microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Contribution of NmSystems · 2021
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Acetylation of Response Regulator Protein MtrA inFrontiers in microbiology · 2020
    Article
  15. Review
  16. Review
  17. NapM enhances the survival ofCommunications biology · 2019
    Article
  18. Review
  19. Article
  20. Structure and Function of theFrontiers in microbiology · 2018
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Gorla PurushothamBiomedical Research, The University of Health Science Center at Tyler, Tyler, TX, 75708, USA.
Krishna B SarvaBiomedical Research, The University of Health Science Center at Tyler, Tyler, TX, 75708, USA.
Ewelina BlaszczykBiomedical Research, The University of Health Science Center at Tyler, Tyler, TX, 75708, USA.
Malini RajagopalanBiomedical Research, The University of Health Science Center at Tyler, Tyler, TX, 75708, USA.
Murty V MadirajuBiomedical Research, The University of Health Science Center at Tyler, Tyler, TX, 75708, USA.

Funding

Mycobacterium tuberculosis cell division and proliferationR01AI048417 · NIAID · UNIVERSITY OF TEXAS HLTH CTR AT TYLER · PI RAJAGOPALAN, MALINI · 2000 to 2011
$3.0M
MYCOBACTERIUM TUBERCULOSIS REPLICATION AND PROLIFERATIONR01AI084734 · NIAID · UNIVERSITY OF TEXAS HLTH CTR AT TYLER · PI MADIRAJU, MURTY V. · 2009 to 2012
$1.4M
NIAID NIH HHS AI048417NIAID NIH HHS AI084734NIAID NIH HHS R01 AI048417NIAID NIH HHS R01 AI084734
6 · The paper itself

Abstract

The regulators of Mycobacterium tuberculosis DNA replication are largely unknown. Here, we demonstrate that in synchronously replicating M. tuberculosis, MtrA access to origin of replication (oriC) is enriched in the post-replication (D) period. The increased oriC binding results from elevated MtrA phosphorylation (MtrA∼P) as evidenced by reduced expression of dnaN, dnaA and increased expression of select cell division targets. Overproduction of gain-of-function MtrAY102C advanced the MtrA oriC access to the C period, reduced dnaA and dnaN expression, interfered with replication synchrony and compromised cell division. Overproduction of wild-type (MtrA+) or phosphorylation-defective MtrAD56N did not promote oriC access in the C period, nor affected cell cycle progression. MtrA interacts with DnaA signaling a possibility that DnaA helps load MtrA on oriC. Therefore, oriC sequestration by MtrA∼P in the D period may normally serve to prevent untimely initiations and that DnaA-MtrA interactions may facilitate regulated oriC replication. Finally, despite the near sequence identity of MtrA in M. smegmatis and M. tuberculosis, the M. smegmatis oriC is not MtrA-target. We conclude that M. tuberculosis oriC has evolved to be regulated by MtrA and that cell cycle progression in this organisms are governed, at least in part, by oscillations in the MtrA∼P levels.

Indexed as

Replication OriginATP-Binding Cassette TransportersBacterial ProteinsCell DivisionDNA-Binding ProteinsDNA ReplicationGene Expression Regulation, BacterialMycobacterium tuberculosisPhosphorylationATP-Binding Cassette TransportersBacterial ProteinsDNA-Binding ProteinsMtrA protein, Bacteria

Identifiers

PMID26207528
PMCPMC4700885

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.