Evidence map›Paper›PMID 19193764›Full record

ArticleMolecular biology of the cell2009

Clustering of C-terminal stromal domains of Tha4 homo-oligomers during translocation by the Tat protein transport system.

Carole Dabney-Smith, Kenneth Cline

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

42 citing papers in PubMed, 65 citations in OpenAlex.

  1. Review
  2. The mechanism of Tat-dependent protein translocation.Microbial cell (Graz, Austria) · 2026
    Article
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
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  14. Engineered Cross-Linking to Study the Pore Architecture of the CRAC Channel.Methods in molecular biology (Clifton, N.J.) · 2018
    Article
  15. Article
  16. Article
  17. A signal sequence suppressor mutant that stabilizes an assembled state of the twin arginine translocase.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  18. Article
  19. Review
  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 at 1 institution in 1 country.

Carole Dabney-SmithPlant Molecular and Cellular Biology Program and Department of Horticultural Sciences, University of Florida, Gainesville, FL 32611, USA.
Kenneth Cline
University of Florida · US

Funding

NUCLEAR GENES THAT MEDIATE CHLOROPLAST ASSEMBLYR01GM048179 · NIGMS · UNIVERSITY OF OREGON · PI BARKAN, ALICE · 1997 to 2000
$188k
NIGMS NIH HHS R01 GM48179
6 · The paper itself

Abstract

The chloroplast Twin arginine translocation (Tat) pathway uses three membrane proteins and the proton gradient to transport folded proteins across sealed membranes. Precursor proteins bind to the cpTatC-Hcf106 receptor complex, triggering Tha4 assembly and protein translocation. Tha4 is required only for the translocation step and is thought to be the protein-conducting component. The organization of Tha4 oligomers was examined by substituting pairs of cysteine residues into Tha4 and inducing disulfide cross-links under varying stages of protein translocation. Tha4 formed tetramers via its transmembrane domain in unstimulated membranes and octamers in membranes stimulated by precursor and the proton gradient. Tha4 formed larger oligomers of at least 16 protomers via its carboxy tail, but such C-tail clustering only occurred in stimulated membranes. Mutational studies showed that transmembrane domain directed octamers as well as C-tail clusters require Tha4's transmembrane glutamate residue and its amphipathic helix, both of which are necessary for Tha4 function. A novel double cross-linking strategy demonstrated that both transmembrane domain directed- and C-tail directed oligomerization occur in the translocase. These results support a model in which Tha4 oligomers dock with a precursor-receptor complex and undergo a conformational switch that results in activation for protein transport. This possibly involves accretion of additional Tha4 into a larger transport-active homo-oligomer.

Indexed as

Amino Acid SequenceAmino Acid SubstitutionCysteineMembrane ProteinsMolecular Sequence DataPisum sativumPlant ProteinsProtein Structure, QuaternaryProtein Structure, TertiaryProtein SubunitsProtein TransportStructure-Activity RelationshipThylakoidsCysteineMembrane ProteinsPlant ProteinsProtein SubunitsTha4 protein, plant

Identifiers

PMID19193764
PMCPMC2663938
OpenAlexW2109036246

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.