ArticleFrontiers in cellular and infection microbiology2016
The PorX Response Regulator of the Porphyromonas gingivalis PorXY Two-Component System Does Not Directly Regulate the Type IX Secretion Genes but Binds the PorL Subunit.
Article in Frontiers in cellular and infection microbiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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.
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.
Who cites it
18 citing papers in PubMed, 28 citations in OpenAlex.
- The survival status ofJournal of oral microbiology · 2026Review
- Advances in the type IX secretion system: an exploration focusing onCurrent research in microbial sciences · 2025Review
- Unveiling the molecular mechanisms of the type IX secretion system's response regulator: Structural and functional insights.PNAS nexus · 2024Article
- Structure-function analysis of PorXScientific reports · 2024Article
- Response regulator PorX coordinates oligonucleotide signalling and gene expression to control the secretion of virulence factors.Nucleic acids research · 2022Article
- Purification, crystallization and crystallographic analysis of the PorX response regulator associated with the type IX secretion system.Acta crystallographica. Section F, Structural biology communications · 2022Article
- A unique bacterial secretion machinery with multiple secretion centers.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Protein Interactome Analysis of the Type IX Secretion System Identifies PorW as the Missing Link between the PorK/N Ring Complex and the Sov Translocon.Microbiology spectrum · 2022Article
- A PorX/PorY and σmSphere · 2021Article
- Research progress on two-component signal transduction systems inHua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology · 2021Review
- Structure and mechanism of the proton-driven motor that powers type 9 secretion and gliding motility.Nature microbiology · 2021Article
- Amino acids as wetting agents: surface translocation by Porphyromonas gingivalis.The ISME journal · 2019Article
- Article
- [Research progress on the type Ⅸ secretion system of Porphyromonas gingivalis].Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology · 2017Article
- Characterization of theThe Journal of biological chemistry · 2017Article
- Two-component signal transduction systems in oral bacteria.Journal of oral microbiology · 2017Review
- The Type IX Secretion System (T9SS): Highlights and Recent Insights into Its Structure and Function.Frontiers in cellular and infection microbiology · 2017Review
- The PorX/PorY system is a virulence factor of Porphyromonas gingivalis and mediates the activation of the type IX secretion system.The Journal of biological chemistryArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Type IX secretion system (T9SS) is a versatile multi-protein complex restricted to bacteria of the Bacteriodetes phylum and responsible for the secretion or cell surface exposition of diverse proteins that participate to S-layer formation, gliding motility or pathogenesis. The T9SS is poorly characterized but a number of proteins involved in the assembly of the secretion apparatus in the oral pathogen Porphyromonas gingivalis have been identified based on genome substractive analyses. Among these proteins, PorY, and PorX encode typical two-component system (TCS) sensor and CheY-like response regulator respectively. Although the porX and porY genes do not localize at the same genetic locus, it has been proposed that PorXY form a bona fide TCS. Deletion of porX in P. gingivalis causes a slight decrease of the expression of a number of other T9SS genes, including sov, porT, porP, porK, porL, porM, porN, and porY. Here, we show that PorX and the soluble cytoplasmic domain of PorY interact. Using electrophoretic mobility shift, DNA-protein co-purification and heterologous host expression assays, we demonstrate that PorX does not bind T9SS gene promoters and does not directly regulate expression of the T9SS genes. Finally, we show that PorX interacts with the cytoplasmic domain of PorL, a component of the T9SS membrane core complex and propose that the CheY-like PorX protein might be involved in the dynamics of the T9SS.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.