Evidence map›Paper›PMID 32457471›Full record

ArticleNature communications2020

Computer simulations explain the anomalous temperature optimum in a cold-adapted enzyme.

Jaka Sočan, Miha Purg, Johan Åqvist

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 8% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Computer Simulations of the Temperature Dependence of Enzyme Reactions.Journal of chemical theory and computation · 2025
    Review
  8. High-Spin States of Manganese(III) Enable Robust Cold-Adapted Activity of MnOAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  9. Computational Analysis of Heat Capacity Effects in Protein-Ligand Binding.Journal of chemical theory and computation · 2024
    Article
  10. Article
  11. Article
  12. Why Do Empirical Valence Bond Simulations Yield Accurate Arrhenius Plots?Journal of chemical theory and computation · 2024
    Article
  13. Enthalpies and entropies of hydration from Monte Carlo simulations.Physical chemistry chemical physics : PCCP · 2024
    Article
  14. Article
  15. 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

3 authors at 1 institution in 1 country.

Jaka SočanDepartment of Cell & Molecular Biology, Uppsala University, Biomedical Center, Box 596, SE-751 24, Uppsala, Sweden.
Miha PurgDepartment of Cell & Molecular Biology, Uppsala University, Biomedical Center, Box 596, SE-751 24, Uppsala, Sweden.
Johan ÅqvistDepartment of Cell & Molecular Biology, Uppsala University, Biomedical Center, Box 596, SE-751 24, Uppsala, Sweden. aqvist@xray.bmc.uu.se.ORCID http://orcid.org/0000-0003-2091-0610
Uppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cold-adapted enzymes from psychrophilic species show the general characteristics of being more heat labile, and having a different balance between enthalpic and entropic contributions to free energy barrier of the catalyzed reaction compared to mesophilic orthologs. Among cold-adapted enzymes, there are also examples that show an enigmatic inactivation at higher temperatures before unfolding of the protein occurs. Here, we analyze these phenomena by extensive computer simulations of the catalytic reactions of psychrophilic and mesophilic α-amylases. The calculations yield temperature dependent reaction rates in good agreement with experiment, and also elicit the anomalous rate optimum for the cold-adapted enzyme, which occurs about 15 °C below the melting point. This result allows us to examine the structural basis of thermal inactivation, which turns out to be caused by breaking of a specific enzyme-substrate interaction. This type of behaviour is also likely to be relevant for other enzymes displaying such anomalous temperature optima.

Indexed as

Adaptation, Biologicalalpha-AmylasesAnimalsBiocatalysisCatalytic DomainCold TemperatureComputer SimulationEnzyme StabilityKineticsModels, MolecularMolecular Dynamics SimulationPancreatic alpha-AmylasesProtein ConformationPseudoalteromonasSus scrofaThermodynamicsalpha-AmylasesPancreatic alpha-Amylases

Identifiers

PMID32457471
PMCPMC7250929
OpenAlexW3014771307

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.