Evidence map›Paper›PMID 20336253›Full record

ArticlePhysical chemistry chemical physics : PCCP2010

A natural missing link between activated and downhill protein folding scenarios.

Feng Liu, Caroline Maynard, Gregory Scott, Artem Melnykov, Kathleen B Hall, Martin Gruebele

Abstract read
In one paragraph

Article in Physical chemistry chemical physics : PCCP, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. 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

6 authors.

Feng LiuCenter for Biophysics and Computational Biology, University of Illinois at Urbana-Champaign, IL 61801, USA.
Caroline Maynard
Gregory Scott
Artem Melnykov
Kathleen B Hall
Martin Gruebele

Funding

Protein refolding and transient aggregate formation studied by very fast pressureR01GM093318 · NIGMS · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI GRUEBELE, MARTIN · 2010 to 2020
$3.1M
Assembly and stability of supramolecular PTB: exon complexesR01GM077231 · NIGMS · WASHINGTON UNIVERSITY · PI HALL, KATHLEEN B · 2007 to 2010
$1.5M
NIGMS NIH HHS GM0772231NIGMS NIH HHS R01 GM077231NIGMS NIH HHS R01 GM093318
6 · The paper itself

Abstract

We propose protein PTB1 : 4W as a good candidate for engineering into a downhill folder. PTB1 : 4W has a probe-dependent thermal unfolding curve and sub-millisecond T-jump relaxation kinetics on more than one time scale. Its refolding rate in denaturant is a non-linear function of denaturant concentration (curved chevron plot). Yet at high denaturant concentration its unfolding is probe-independent, and the folding kinetics can be fitted to a single exponential decay. The domain appears to fold via a mechanism between downhill folding and activated folding over several small barriers, and when denaturant is added, one of these barriers greatly increases and simplifies the observed folding to apparent two-state kinetics. We predict the simplest free energy function consistent with the thermal denaturation and kinetics experiments by using the singular value Smoluchowski dynamics (SVSD) model. PTB1 : 4W is a natural 'missing link' between downhill and activated folding. We suggest mutations that could move the protein into the downhill folding limit.

Indexed as

Protein FoldingAmino Acid SequenceModels, MolecularMolecular Sequence DataProteinsProteins

Identifiers

PMID20336253
PMCPMC7382783

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Registered trials

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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.