Evidence map›Paper›PMID 22735532›Full record

ArticleBiophysical journal2012

Cotranslational protein folding within the ribosome tunnel influences trigger-factor recruitment.

Ku-Feng Lin, Chia-Sui Sun, Yi-Chen Huang, Sunney I Chan, Jiri Koubek, Tzong-Huah Wu, Joseph J-T Huang

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

14 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Mechanisms of Cotranslational Protein Maturation in Bacteria.Frontiers in molecular biosciences · 2021
    Review
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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

7 authors at 2 institutions in 1 country.

Ku-Feng LinInstitute of Chemistry, Academia Sinica, Nankang, Taipei, Taiwan.
Chia-Sui Sun
Yi-Chen Huang
Sunney I Chan
Jiri Koubek
Tzong-Huah Wu
Joseph J-T Huang
Institute of Chemistry, Academia Sinica · TWInstitute of Biomedical Sciences, Academia Sinica · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In recent years, various folding zones within the ribosome tunnel have been identified and explored through x-ray, cryo-electron microscopy (cryo-EM), and molecular biology studies. Here, we generated ribosome-bound nascent polypeptide complexes (RNCs) with different polyalanine (poly-A) inserts or signal peptides from membrane/secretory proteins to explore the influence of nascent chain compaction in the Escherichia coli ribosome tunnel on chaperone recruitment. By employing time-resolved fluorescence resonance energy transfer and immunoblotting, we were able to show that the poly-A inserts embedded in the passage tunnel can form a compacted structure (presumably helix) and reduce the recruitment of Trigger Factor (TF) when the helical motif is located in the region near the tunnel exit. Similar experiments on nascent chains containing signal sequences that may form compacted structural motifs within the ribosome tunnel and lure the signal recognition particle (SRP) to the ribosome, provided additional evidence that short, compacted nascent chains interfere with TF binding. These findings shed light on the possible controlling mechanism of nascent chains within the tunnel that leads to chaperone recruitment, as well as the function of L23, the ribosomal protein that serves as docking sites for both TF and SRP, in cotranslational protein targeting.

Indexed as

Protein BiosynthesisProtein FoldingAmino Acid SequenceEscherichia coli ProteinsFluorescence Resonance Energy TransferMembrane ProteinsModels, MolecularMolecular Sequence DataPeptide FragmentsPeptidylprolyl IsomerasePoly AProtein Sorting SignalsProtein Structure, SecondaryRibosomesRNA, TransferSignal Recognition ParticleEscherichia coli ProteinsMembrane ProteinsPeptide FragmentsPeptidylprolyl IsomerasePoly AProtein Sorting SignalsRNA, TransferSignal Recognition Particletrigger factor, E coli

Identifiers

PMID22735532
PMCPMC3379017
OpenAlexW2033662167

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.