Evidence map›Paper›PMID 25345653›Full record

ReviewMolecular microbiology2015

Of linkers and autochaperones: an unambiguous nomenclature to identify common and uncommon themes for autotransporter secretion.

Igor Drobnak, Esther Braselmann, Julie L Chaney, Denisse L Leyton, Harris D Bernstein, Trevor Lithgow, Joen Luirink, James P Nataro, Patricia L Clark

Abstract readReview
In one paragraph

Review in Molecular microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
–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

25 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Frontiers in microbiology · 2021
    Article
  10. Secrete or perish: The role of secretion systems inComputational and structural biotechnology journal · 2021
    Review
  11. Adhesive Functions or Pseudogenization of Type Va Autotransporters inFrontiers in cellular and infection microbiology · 2021
    Article
  12. Article
  13. Properties of protein unfolded states suggest broad selection for expanded conformational ensembles.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Review
  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

9 authors.

Igor DrobnakDepartment of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA.
Esther Braselmann
Julie L Chaney
Denisse L Leyton
Harris D Bernstein
Trevor Lithgow
Joen Luirink
James P Nataro
Patricia L Clark

Funding

Biogenesis of bacterial outer membrane proteinsZIADK052037 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI BERNSTEIN, HARRIS · 2009 to 2025
$21.6M
Chemistry-Biochemistry-Biology Training Program at Notre DameT32GM075762 · NIGMS · UNIVERSITY OF NOTRE DAME · PI CHANG, MAYLAND F, MOBASHERY, SHAHRIAR · 2007 to 2021
$3.7M
OUTER MEMBRANE SECRETION MECHANISM FOR AUTOTRANSPORTER PROTEINSR01GM097573 · NIGMS · UNIVERSITY OF NOTRE DAME · PI CLARK, PATRICIA LOUISE · 2011 to 2014
$1.1M
NIGMS NIH HHS R01 GM097573NIGMS NIH HHS T32 GM075762
6 · The paper itself

Abstract

Autotransporter (AT) proteins provide a diverse array of important virulence functions to Gram-negative bacterial pathogens, and have also been adapted for protein surface display applications. The 'autotransporter' moniker refers to early models that depicted these proteins facilitating their own translocation across the bacterial outer membrane. Although translocation is less autonomous than originally proposed, AT protein segments upstream of the C-terminal transmembrane β-barrel have nevertheless consistently been found to contribute to efficient translocation and/or folding of the N-terminal virulence region (the 'passenger'). However, defining the precise secretion functions of these AT regions has been complicated by the use of multiple overlapping and ambiguous terms to define AT sequence, structural, and functional features, including 'autochaperone', 'linker' and 'junction'. Moreover, the precise definitions and boundaries of these features vary among ATs and even among research groups, leading to an overall murky picture of the contributions of specific features to translocation. Here we propose a unified, unambiguous nomenclature for AT structural, functional and conserved sequence features, based on explicit criteria. Applied to 16 well-studied AT proteins, this nomenclature reveals new commonalities for translocation but also highlights that the autochaperone function is less closely associated with a conserved sequence element than previously believed.

Indexed as

Amino Acid SequenceBacterial ProteinsBiological TransportCarrier ProteinsConserved SequenceGram-Negative BacteriaMolecular ChaperonesVirulence FactorsBacterial ProteinsCarrier ProteinsMolecular ChaperonesVirulence Factors

Identifiers

PMID25345653
PMCPMC4275399

What OpenQuestion holds

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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.