Evidence map›Paper›PMID 19445951›Full record

ArticleJournal of molecular biology2009

Different members of a simple three-helix bundle protein family have very different folding rate constants and fold by different mechanisms.

Beth G Wensley, Martina Gärtner, Wan Xian Choo, Sarah Batey, Jane Clarke

Abstract read
In one paragraph

Article in Journal of molecular biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing 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

25 citing papers in PubMed.

  1. Article
  2. Review
  3. Cotranslational folding cooperativity of contiguous domains of α-spectrin.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  4. Article
  5. Sequence-, structure-, and dynamics-based comparisons of structurally homologous CheY-like proteins.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  6. Article
  7. Protein unfolding rates correlate as strongly as folding rates with native structure.Protein science : a publication of the Protein Society · 2015
    Article
  8. Review
  9. Interplay between partner and ligand facilitates the folding and binding of an intrinsically disordered protein.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Article
  10. General mechanism of two-state protein folding kinetics.Journal of the American Chemical Society · 2014
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Take home lessons from studies of related proteins.Current opinion in structural biology · 2013
    Review
  16. Article
  17. Article
  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

5 authors.

Beth G WensleyDepartment of Chemistry, MRC Centre for Protein Engineering, University of Cambridge, UK.
Martina Gärtner
Wan Xian Choo
Sarah Batey
Jane Clarke

Funding

Medical Research Council MC_U105485808Wellcome Trust 064417Wellcome Trust GR064417MA
6 · The paper itself

Abstract

The 15th, 16th, and 17th repeats of chicken brain alpha-spectrin (R15, R16, and R17, respectively) are very similar in terms of structure and stability. However, R15 folds and unfolds 3 orders of magnitude faster than R16 and R17. This is unexpected. The rate-limiting transition state for R15 folding is investigated using protein engineering methods (Phi-value analysis) and compared with previously completed analyses of R16 and R17. Characterisation of many mutants suggests that all three proteins have similar complexity in the folding landscape. The early rate-limiting transition states of the three domains are similar in terms of overall structure, but there are significant differences in the patterns of Phi-values. R15 apparently folds via a nucleation-condensation mechanism, which involves concomitant folding and packing of the A- and C-helices, establishing the correct topology. R16 and R17 fold via a more framework-like mechanism, which may impede the search to find the correct packing of the helices, providing a possible explanation for the fast folding of R15.

Indexed as

Protein FoldingAmino Acid SequenceAnimalsChickensHumansKineticsMolecular Sequence DataMutant ProteinsMutationProtein Structure, SecondaryProtein Structure, TertiarySpectrinThermodynamicsMutant ProteinsSpectrin

Identifiers

PMID19445951
PMCPMC2852649

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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.