Evidence map›Paper›PMID 22647788›Full record

ArticlemBio2012

Selective purification of recombinant neuroactive peptides using the flagellar type III secretion system.

Hanna M Singer, Marc Erhardt, Andrew M Steiner, Min-Min Zhang, Doju Yoshikami, Grzegorz Bulaj, Baldomero M Olivera, Kelly T Hughes

Abstract read
In one paragraph

Article in mBio, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed.

  1. Article
  2. Article
  3. AttenuatedActa pharmaceutica Sinica. B · 2026
    Article
  4. Article
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  6. Article
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  15. Article
  16. Article
  17. Article
  18. Article
  19. Bacteria in Cancer Therapy: Renaissance of an Old Concept.International journal of microbiology · 2016
    Review
  20. Type III secretion systems: the bacterial flagellum and the injectisome.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2015
    Review
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.

Hanna M SingerDèpartement de Médecine, Université de Fribourg, Fribourg, Switzerland.
Marc Erhardt
Andrew M Steiner
Min-Min Zhang
Doju Yoshikami
Grzegorz Bulaj
Baldomero M Olivera
Kelly T Hughes

Funding

Venoms, Biological Resources, Molecular BiologyP01GM048677 · NIGMS · UNIVERSITY OF UTAH · PI BANDYOPADHYAY, PRADIP K · 1993 to 2018
$32.2M
Coupling gene regulation to flagellar morphogenesisR01GM056141 · NIGMS · UNIVERSITY OF WASHINGTON · PI HUGHES, KELLY T · 1998 to 2023
$8.3M
Translational Control Coupled to Flagellum AssemblyR01GM062206 · NIGMS · UNIVERSITY OF WASHINGTON · PI HUGHES, KELLY T · 2001 to 2011
$1.7M
NIGMS NIH HHS GM062206NIGMS NIH HHS GM48677NIGMS NIH HHS P01 GM048677NIGMS NIH HHS R01 GM056141NIGMS NIH HHS R01 GM062206
6 · The paper itself

Abstract

unlabelledThe structure, assembly, and function of the bacterial flagellum involves about 60 different proteins, many of which are selectively secreted via a specific type III secretion system (T3SS) (J. Frye et al., J. Bacteriol. 188:2233-2243, 2006). The T3SS is reported to secrete proteins at rates of up to 10,000 amino acid residues per second. In this work, we showed that the flagellar T3SS of Salmonella enterica serovar Typhimurium could be manipulated to export recombinant nonflagellar proteins through the flagellum and into the surrounding medium. We translationally fused various neuroactive peptides and proteins from snails, spiders, snakes, sea anemone, and bacteria to the flagellar secretion substrate FlgM. We found that all tested peptides of various sizes were secreted via the bacterial flagellar T3SS. We subsequently purified the recombinant μ-conotoxin SIIIA (rSIIIA) from Conus striatus by affinity chromatography and confirmed that T3SS-derived rSIIIA inhibited mammalian voltage-gated sodium channel Na(V)1.2 comparably to chemically synthesized SIIIA. IMPORTANCE: Manipulation of the flagellar secretion system bypasses the problems of inclusion body formation and cellular degradation that occur during conventional recombinant protein expression. This work serves as a proof of principle for the use of engineered bacterial cells for rapid purification of recombinant neuroactive peptides and proteins by exploiting secretion via the well-characterized flagellator type III secretion system.

Indexed as

Amino Acid SequenceAnimalsBacterial ProteinsConotoxinsFlagellaMolecular Sequence DataPeptidesProtein TransportRecombinant Fusion ProteinsSalmonella typhimuriumSea AnemonesSnailsSnakesSpidersBacterial ProteinsConotoxinsPeptidesRecombinant Fusion Proteins

Identifiers

PMID22647788
PMCPMC3372961

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.