Evidence map›Paper›PMID 17908913›Full record

ArticleThe Journal of cell biology2007

Two electrical potential-dependent steps are required for transport by the Escherichia coli Tat machinery.

Umesh K Bageshwar, Siegfried M Musser

Abstract read
In one paragraph

Article in The Journal of cell biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing 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

46 citing papers in PubMed.

  1. Review
  2. The mechanism of Tat-dependent protein translocation.Microbial cell (Graz, Austria) · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Review
  14. Review
  15. Article
  16. mBio · 2018
    Article
  17. Review
  18. Article
  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

2 authors.

Umesh K BageshwarDepartment of Molecular and Cellular Medicine, College of Medicine, Texas A&M Health Science Center, College Station, TX 77843, USA.
Siegfried M Musser

Funding

Single Molecule Analysis of Bacterial Protein TransportR01GM065534 · NIGMS · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI MUSSER, SIEGFRIED M · 2003 to 2010
$1.6M
NIGMS NIH HHS GM065534NIGMS NIH HHS R01 GM065534
6 · The paper itself

Abstract

The twin-arginine translocation (Tat) pathway in Escherichia coli transports fully folded and assembled proteins across the energy-transducing periplasmic membrane. In chloroplasts, Tat transport requires energy input only from the proton motive force. To elucidate the mechanism and energetics of bacterial Tat protein transport, we developed an efficient in vitro transport assay using TatABC-enriched inverted membrane vesicles and the physiological precursor pre-SufI. We report transport efficiencies of 60-80% for nanomolar pre-SufI concentrations. Dissipation of the pH gradient does not reduce pre-SufI transport efficiency. Instead, pre-SufI transport requires at least two electrical potential (Deltapsi)-dependent steps that differ in both the duration and minimum magnitude of the required Deltapsi. The data are consistent with a model in which a substantial Deltapsi of short duration is required for an early transport step, and in which a small Deltapsi of long duration is necessary to drive a later transport step.

Indexed as

Action PotentialsAmino Acid SequenceEscherichia coliEscherichia coli ProteinsGreen Fluorescent ProteinsHydrogen-Ion ConcentrationKineticsMembrane Transport ProteinsMolecular Sequence DataProtein TransportProton-Motive ForceEscherichia coli ProteinsGreen Fluorescent ProteinsMembrane Transport ProteinsSufI protein, E colitwin-arginine translocase complex, E coli

Identifiers

PMID17908913
PMCPMC2064739

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.