Evidence map›Paper›PMID 18052079›Full record

ArticleBiochemistry2007

On the relationship between thermal stability and catalytic power of enzymes.

Maite Roca, Hanbin Liu, Benjamin Messer, Arieh Warshel

Abstract read
In one paragraph

Article in Biochemistry, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing 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

39 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Enzyme dynamics-a brief review.Biophysical reviews · 2023
    Article
  9. Article
  10. Natural Evolution Provides Strong Hints about Laboratory Evolution of Designer Enzymes.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  11. Enhancing computational enzyme design by a maximum entropy strategy.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

4 authors.

Maite RocaDepartment of Chemistry, University of Southern California, 418 SGM Building, 3620 McClintock Avenue, Los Angeles, California 90089-1062, USA. mtrm@usc.edu
Hanbin Liu
Benjamin Messer
Arieh Warshel

Funding

THEORETICAL STUDIES OF ENZYMATIC REACTIONSR01GM024492 · NIGMS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI WARSHEL, ARIEH · 1985 to 2017
$5.0M
NIGMS NIH HHS GM024492NIGMS NIH HHS R01 GM024492
6 · The paper itself

Abstract

The possible relationship between the thermal stability and the catalytic power of enzymes is of great current interest. In particular, it has been suggested that thermophilic or hyperthermophilic (Tm) enzymes have lower catalytic power at a given temperature than the corresponding mesophilic (Ms) enzymes, because the thermophilic enzymes are less flexible (assuming that flexibility and catalysis are directly correlated). These suggestions presume that the reduced dynamics of the thermophilic enzymes is the reason for their reduced catalytic power. The present paper takes the specific case of dihydrofolate reductase (DHFR) and explores the validity of the above argument by simulation approaches. It is found that the Tm enzymes have restricted motions in the direction of the folding coordinate, but this is not relevant to the chemical process, since the motions along the reaction coordinate are perpendicular to the folding motions. Moreover, it is shown that the rate of the chemical reaction is determined by the activation barrier and the corresponding reorganization energy, rather than by dynamics or flexibility in the ground state. In fact, as far as flexibility is concerned, we conclude that the displacement along the reaction coordinate is larger in the Tm enzyme than in the Ms enzyme and that the general trend in enzyme catalysis is that the best catalyst involves less motion during the reaction than the less optimal catalyst. The relationship between thermal stability and catalysis appears to reflect the fact that to obtain small electrostatic reorganization energy it is necessary to invest some folding energy in the overall preorganization process. Thus, the optimized catalysts are less stable. This trend is clearly observed in the DHFR case.

Indexed as

TemperatureCatalysisComputer SimulationCrystallography, X-RayEnzyme ActivationEscherichia coliModels, MolecularProtein DenaturationProtein FoldingProtein Structure, TertiarySubstrate SpecificityTetrahydrofolate DehydrogenaseTetrahydrofolate Dehydrogenase

Identifiers

PMID18052079
PMCPMC3174049

What OpenQuestion holds

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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.