Evidence map›Paper›PMID 29391580›Full record

ArticleScientific reports2018

Structural and mechanistic divergence of the small (p)ppGpp synthetases RelP and RelQ.

Wieland Steinchen, Marian S Vogt, Florian Altegoer, Pietro I Giammarinaro, Petra Horvatek, Christiane Wolz, Gert Bange

Abstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing 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

32 citing papers in PubMed.

  1. Article
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  5. The Secondary Resistome of Methicillin-ResistantAntibiotics (Basel, Switzerland) · 2025
    Article
  6. Review
  7. (p)ppGpp is required for virulence ofInfection and immunity · 2024
    Article
  8. Biochemical and X-ray analyses of the players involved in the faRel2/aTfaRel2 toxin-antitoxin operon.Acta crystallographica. Section F, Structural biology communications · 2023
    Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. ppGpp functions as an alarmone in metazoa.Communications biology · 2020
    Article
  19. Article
  20. 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

7 authors.

Wieland SteinchenPhilipps-University Marburg, LOEWE Center for Synthetic Microbiology & Department of Chemistry, Hans-Meerwein-Straße, 35043 Marburg, Germany. wieland.steinchen@synmikro.uni-marburg.de.
Marian S VogtPhilipps-University Marburg, LOEWE Center for Synthetic Microbiology & Department of Chemistry, Hans-Meerwein-Straße, 35043 Marburg, Germany.
Florian AltegoerPhilipps-University Marburg, LOEWE Center for Synthetic Microbiology & Department of Chemistry, Hans-Meerwein-Straße, 35043 Marburg, Germany.
Pietro I GiammarinaroPhilipps-University Marburg, LOEWE Center for Synthetic Microbiology & Department of Chemistry, Hans-Meerwein-Straße, 35043 Marburg, Germany.
Petra HorvatekUniversity of Tübingen, Interfaculty Institute of Microbiology and Infection Medicine, Elfriede-Aulhorn-Straße 6, 72076 Tübingen, Germany.
Christiane WolzUniversity of Tübingen, Interfaculty Institute of Microbiology and Infection Medicine, Elfriede-Aulhorn-Straße 6, 72076 Tübingen, Germany.
Gert BangePhilipps-University Marburg, LOEWE Center for Synthetic Microbiology & Department of Chemistry, Hans-Meerwein-Straße, 35043 Marburg, Germany. gert.bange@synmikro.uni-marburg.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The nutritional alarmones ppGpp and pppGpp (collectively: (p)ppGpp) are nucleotide-based second messengers enabling bacteria to respond to environmental and stress conditions. Several bacterial species contain two highly homologous (p)ppGpp synthetases named RelP (SAS2, YwaC) and RelQ (SAS1, YjbM). It is established that RelQ forms homotetramers that are subject to positive allosteric regulation by pppGpp, but structural and mechanistic insights into RelP lack behind. Here we present a structural and mechanistic characterization of RelP. In stark contrast to RelQ, RelP is not allosterically regulated by pppGpp and displays a different enzyme kinetic behavior. This discrepancy is evoked by different conformational properties of the guanosine-substrate binding site (G-Loop) of both proteins. Our study shows how minor structural divergences between close homologues result in new functional features during the course of molecular evolution.

Indexed as

Gene Expression Regulation, BacterialAllosteric RegulationBacteriaBacterial ProteinsBinding SitesGuanosine TetraphosphateLigasesSubstrate SpecificityBacterial Proteinsguanosine 3',5'-polyphosphate synthetasesGuanosine TetraphosphateLigases

Identifiers

PMID29391580
PMCPMC5794853

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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.