Evidence map›Paper›PMID 30531789›Full record

ArticleNature communications2018

Transmembrane but not soluble helices fold inside the ribosome tunnel.

Manuel Bañó-Polo, Carlos Baeza-Delgado, Silvia Tamborero, Anthony Hazel, Brayan Grau, IngMarie Nilsson, Paul Whitley, James C Gumbart, Gunnar von Heijne, Ismael Mingarro

Abstract read
In one paragraph

Article in Nature communications, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing 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

26 citing papers in PubMed.

  1. Article
  2. Review
  3. Structural insights into SARS-CoV-2 nonstructural protein 4 (nsp4) biogenesis.Protein science : a publication of the Protein Society · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Folding and Insertion of Transmembrane Helices at the ER.International journal of molecular sciences · 2021
    Review
  18. Article
  19. Article
  20. Mechanisms of Cotranslational Protein Maturation in Bacteria.Frontiers in molecular biosciences · 2021
    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

10 authors.

Manuel Bañó-PoloEstructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BioTecMed), Departament de Bioquímica i Biologia Molecular, Universitat de València, E-46100, Burjassot, Spain.
Carlos Baeza-DelgadoEstructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BioTecMed), Departament de Bioquímica i Biologia Molecular, Universitat de València, E-46100, Burjassot, Spain.
Silvia TamboreroEstructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BioTecMed), Departament de Bioquímica i Biologia Molecular, Universitat de València, E-46100, Burjassot, Spain.
Anthony HazelSchool of Physics, School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA.
Brayan GrauEstructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BioTecMed), Departament de Bioquímica i Biologia Molecular, Universitat de València, E-46100, Burjassot, Spain.
IngMarie NilssonCenter for Biomembrane Research, Department of Biochemistry and Biophysics, Stockholm University, SE-10691, Stockholm, Sweden.
Paul WhitleyDepartment of Biology and Biochemistry, Centre for Regenerative Medicine, University of Bath, Bath, BA2 7AY, UK.
James C GumbartSchool of Physics, School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA.
Gunnar von HeijneCenter for Biomembrane Research, Department of Biochemistry and Biophysics, Stockholm University, SE-10691, Stockholm, Sweden.ORCID http://orcid.org/0000-0002-4490-8569
Ismael MingarroEstructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BioTecMed), Departament de Bioquímica i Biologia Molecular, Universitat de València, E-46100, Burjassot, Spain. Ismael.Mingarro@uv.es.ORCID http://orcid.org/0000-0002-1910-1229

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Integral membrane proteins are assembled into the ER membrane via a continuous ribosome-translocon channel. The hydrophobicity and thickness of the core of the membrane bilayer leads to the expectation that transmembrane (TM) segments minimize the cost of harbouring polar polypeptide backbones by adopting a regular pattern of hydrogen bonds to form α-helices before integration. Co-translational folding of nascent chains into an α-helical conformation in the ribosomal tunnel has been demonstrated previously, but the features governing this folding are not well understood. In particular, little is known about what features influence the propensity to acquire α-helical structure in the ribosome. Using in vitro translation of truncated nascent chains trapped within the ribosome tunnel and molecular dynamics simulations, we show that folding in the ribosome is attained for TM helices but not for soluble helices, presumably facilitating SRP (signal recognition particle) recognition and/or a favourable conformation for membrane integration upon translocon entry.

Indexed as

Protein FoldingProtein Structure, SecondaryAmino Acid SequenceAnimalsEndoplasmic ReticulumHydrophobic and Hydrophilic InteractionsMembrane ProteinsMolecular Dynamics SimulationRibosomesSequence Homology, Amino AcidSignal Recognition ParticleMembrane ProteinsSignal Recognition Particle

Identifiers

PMID30531789
PMCPMC6286305

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.