Evidence map›Paper›PMID 31808291›Full record

ArticleEMBO reports2020

Effector loading onto the VgrG carrier activates type VI secretion system assembly.

Chih-Feng Wu, Yun-Wei Lien, Devanand Bondage, Jer-Sheng Lin, Martin Pilhofer, Yu-Ling Shih, Jeff H Chang, Erh-Min Lai

Abstract read
In one paragraph

Article in EMBO reports, 2020. 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. TheMicroorganisms · 2026
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  19. Hcp of the Type VI Secretion System (T6SS) inInternational journal of molecular sciences · 2022
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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

8 authors.

Chih-Feng WuInstitute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan.ORCID 0000-0001-5771-8062
Yun-Wei LienInstitute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan.
Devanand BondageInstitute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan.ORCID 0000-0003-4944-2849
Jer-Sheng LinInstitute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan.
Martin PilhoferInstitute of Molecular Biology & Biophysics, Eidgenössische Technische Hochschule Zürich, Zürich, Switzerland.ORCID 0000-0002-3649-3340
Yu-Ling ShihInstitute of Biological Chemistry, Academia Sinica, Taipei, Taiwan.ORCID 0000-0002-8232-2569
Jeff H ChangDepartment of Botany and Plant Pathology, Oregon State University, Corvallis, OR, USA.ORCID 0000-0002-1833-0695
Erh-Min LaiInstitute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan.ORCID 0000-0003-3630-8683

Funding

European Research Council 679209Ministry of Science and Technology, Taiwan (MOST) 104-2311-B-001-025-MY3Ministry of Science and Technology, Taiwan (MOST) 106-2311-B-001-009Ministry of Science and Technology, Taiwan (MOST) 107-2311-B-001-019-MY3Swiss National Science Foundation 179255USDA | National Institute of Food and Agriculture (NIFA) 2014-51181-22384
6 · The paper itself

Abstract

The type VI secretion system (T6SS) is used by many bacteria to engage in social behavior and can affect the health of its host plant or animal. Because activities associated with T6SSs are often costly, T6SSs must be tightly regulated. However, our knowledge regarding how T6SS assembly and contraction are regulated remains limited. Using the plant pathogen Agrobacterium tumefaciens, we show that effectors are not just passengers but also impact on T6SS assembly. The A. tumefaciens strain C58 encodes one T6SS and two Tde DNase toxin effectors used as major weapons for interbacterial competition. Here, we demonstrate that loading of Tde effectors onto their cognate carriers, the VgrG spikes, is required for active T6SS secretion. The assembly of the TssBC contractile sheath occurs only in the presence of Tde effectors. The requirement of effector loading for efficient T6SS secretion was also validated in other A. tumefaciens strains. We propose that such a mechanism is used by bacteria as a strategy for efficacious T6SS firing and to ensure that effectors are loaded onto the T6SS prior to completing its assembly.

Indexed as

Type VI Secretion SystemsAgrobacterium tumefaciensBacterial ProteinsDeoxyribonucleasesBacterial ProteinsDeoxyribonucleasesType VI Secretion SystemsAgrobacterium tumefacienseffectorinterbacterial competitiontype VI secretion systemVgrG

Identifiers

PMID31808291
PMCPMC6945064

What OpenQuestion holds

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Registered trials

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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.