Evidence map›Paper›PMID 34040228›Full record

ReviewNature reviews. Microbiology2021

Type VII secretion systems: structure, functions and transport models.

Angel Rivera-Calzada, Nikolaos Famelis, Oscar Llorca, Sebastian Geibel

Abstract readReview
PubMed Publisher
In one paragraph

Review in Nature reviews. Microbiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 4% 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

65 citing papers in PubMed, 1 synthesis or guideline pooled it, 101 citations in OpenAlex.

  1. Pooled it
  2. Oral Actinobacteria sense and defend against parasitic epibionts.bioRxiv : the preprint server for biology · 2026
    Article
  3. Article
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  7. Review
  8. Article
  9. International journal of molecular sciences · 2026
    Article
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  15. ESX-5 Deletions inbioRxiv : the preprint server for biology · 2025
    Article
  16. Article
  17. A widespread family of molecular chaperones promotes the intracellular stability of type VIIb secretion system-exported toxins.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  18. Review
  19. Review
  20. Article

5 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 2 countries.

Angel Rivera-CalzadaStructural Biology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain. ariverac@cnio.es.ORCID http://orcid.org/0000-0003-2472-5535
Nikolaos FamelisInstitute for Molecular Infection Biology, Julius-Maximilian University of Würzburg, Würzburg, Germany.ORCID http://orcid.org/0000-0002-0134-2139
Oscar LlorcaStructural Biology Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain.ORCID http://orcid.org/0000-0001-5705-0699
Sebastian GeibelInstitute for Molecular Infection Biology, Julius-Maximilian University of Würzburg, Würzburg, Germany. sebastian.geibel@uni-wuerzburg.de.ORCID http://orcid.org/0000-0003-0068-680X
Spanish National Cancer Research Centre · ESUniversity of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Type VII secretion systems (T7SSs) have a key role in the secretion of effector proteins in non-pathogenic mycobacteria and pathogenic mycobacteria such as Mycobacterium tuberculosis, the main causative agent of tuberculosis. Tuberculosis-causing mycobacteria, still accounting for 1.4 million deaths annually, rely on paralogous T7SSs to survive in the host and efficiently evade its immune response. Although it is still unknown how effector proteins of T7SSs cross the outer membrane of the diderm mycobacterial cell envelope, recent advances in the structural characterization of these secretion systems have revealed the intricate network of interactions of conserved components in the plasma membrane. This structural information, added to recent advances in the molecular biology and regulation of mycobacterial T7SSs as well as progress in our understanding of their secreted effector proteins, is shedding light on the inner working of the T7SS machinery. In this Review, we highlight the implications of these studies and the derived transport models, which provide new scenarios for targeting the deathly human pathogen M. tuberculosis.

Indexed as

Biological TransportCell MembraneMycobacteriumProtein ConformationType VII Secretion SystemsType VII Secretion Systems

Identifiers

PMID34040228
OpenAlexW3165713878

What OpenQuestion holds

Textmetadata
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.