Evidence map›Paper›PMID 19211785›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Dodging the crisis of folding proteins with knots.

Joanna I Sułkowska, Piotr Sułkowski, José Onuchic

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 1 pooled it
–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

76 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Novel Knotted Solenoid fold with order-shifted coil arrangement leads to nontrivial 3Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Article
  5. Article
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  7. Knotted artifacts in predicted 3D RNA structures.PLoS computational biology · 2024
    Article
  8. AlphaFold predicts novel human proteins with knots.Protein science : a publication of the Protein Society · 2023
    Article
  9. Article
  10. Are there double knots in proteins? Prediction andFrontiers in molecular biosciences · 2023
    Article
  11. Article
  12. AlphaFold predicts the most complex protein knot and composite protein knots.Protein science : a publication of the Protein Society · 2022
    Article
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16 more citing papers are in PubMed but not listed here.

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

3 authors.

Joanna I SułkowskaCenter for Theoretical Biological Physics, University of California at San Diego, Gilman Drive 9500, La Jolla, CA 92037, USA.
Piotr Sułkowski
José Onuchic

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Proteins with nontrivial topology, containing knots and slipknots, have the ability to fold to their native states without any additional external forces invoked. A mechanism is suggested for folding of these proteins, such as YibK and YbeA, that involves an intermediate configuration with a slipknot. It elucidates the role of topological barriers and backtracking during the folding event. It also illustrates that native contacts are sufficient to guarantee folding in approximately 1-2% of the simulations, and how slipknot intermediates are needed to reduce the topological bottlenecks. As expected, simulations of proteins with similar structure but with knot removed fold much more efficiently, clearly demonstrating the origin of these topological barriers. Although these studies are based on a simple coarse-grained model, they are already able to extract some of the underlying principles governing folding in such complex topologies.

Indexed as

Protein FoldingKineticsModels, MolecularProteinsProtein Structure, TertiaryProteins

Identifiers

PMID19211785
PMCPMC2651233

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.