Evidence map›Paper›PMID 31197146›Full record

ArticleNature communications2019

Environmental pH and peptide signaling control virulence of Streptococcus pyogenes via a quorum-sensing pathway.

Hackwon Do, Nishanth Makthal, Arica R VanderWal, Matthew Ojeda Saavedra, Randall J Olsen, James M Musser, Muthiah Kumaraswami

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
7.3field-weighted citation impact, top 3% of its field
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

39 citing papers in PubMed, 63 citations in OpenAlex.

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  12. Pentamidine inhibition of streptopain attenuatesbioRxiv : the preprint server for biology · 2025
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  18. The potential of Bacillus and Enterococcus probiotic strains to combat helicobacter pylori attachment to the biotic and abiotic surfaces.International microbiology : the official journal of the Spanish Society for Microbiology · 2023
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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 at 1 institution in 1 country.

Hackwon DoCenter for Molecular and Translational Human Infectious Diseases Research, Houston Methodist Research Institute, Houston, TX, 77030, USA.
Nishanth MakthalCenter for Molecular and Translational Human Infectious Diseases Research, Houston Methodist Research Institute, Houston, TX, 77030, USA.
Arica R VanderWalCenter for Molecular and Translational Human Infectious Diseases Research, Houston Methodist Research Institute, Houston, TX, 77030, USA.
Matthew Ojeda SaavedraCenter for Molecular and Translational Human Infectious Diseases Research, Houston Methodist Research Institute, Houston, TX, 77030, USA.
Randall J OlsenCenter for Molecular and Translational Human Infectious Diseases Research, Houston Methodist Research Institute, Houston, TX, 77030, USA.
James M MusserCenter for Molecular and Translational Human Infectious Diseases Research, Houston Methodist Research Institute, Houston, TX, 77030, USA.
Muthiah KumaraswamiCenter for Molecular and Translational Human Infectious Diseases Research, Houston Methodist Research Institute, Houston, TX, 77030, USA. mkumaraswami@houstonmethodist.org.ORCID http://orcid.org/0000-0002-9959-5598
Houston Methodist · US

Funding

Molecular mechanism of virulence regulation in Streptococcus pyogenesR01AI109096 · NIAID · METHODIST HOSPITAL RESEARCH INSTITUTE · PI KUMARASWAMI, MUTHIAH · 2015 to 2019
$2.0M
NIAID NIH HHS R01 AI109096
6 · The paper itself

Abstract

Bacteria control gene expression in concert with their population density by a process called quorum sensing, which is modulated by bacterial chemical signals and environmental factors. In the human pathogen Streptococcus pyogenes, production of secreted virulence factor SpeB is controlled by a quorum-sensing pathway and environmental pH. The quorum-sensing pathway consists of a secreted leaderless peptide signal (SIP), and its cognate receptor RopB. Here, we report that the SIP quorum-sensing pathway has a pH-sensing mechanism operative through a pH-sensitive histidine switch located at the base of the SIP-binding pocket of RopB. Environmental acidification induces protonation of His144 and reorganization of hydrogen bonding networks in RopB, which facilitates SIP recognition. The convergence of two disparate signals in the SIP signaling pathway results in induction of SpeB production and increased bacterial virulence. Our findings provide a model for investigating analogous crosstalk in other microorganisms.

Indexed as

AnimalsBacterial ProteinsDisease Models, AnimalExotoxinsFemaleGene Expression Regulation, BacterialHistidineHumansHydrogen-Ion ConcentrationMiceProtein Sorting SignalsQuorum SensingSignal TransductionStreptococcal InfectionsStreptococcus pyogenesVirulenceBacterial Proteinserythrogenic toxinExotoxinsHistidineProtein Sorting SignalsRopB protein, Rhizobium leguminosarum

Identifiers

PMID31197146
PMCPMC6565748
OpenAlexW2952018489

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.