Evidence map›Paper›PMID 26655472›Full record

ArticleStructure (London, England : 1993)2015

Perturbation of the Conformational Dynamics of an Active-Site Loop Alters Enzyme Activity.

Donald Gagné, Rachel L French, Chitra Narayanan, Miljan Simonović, Pratul K Agarwal, Nicolas Doucet

Abstract read
In one paragraph

Article in Structure (London, England : 1993), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

23 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Protein dynamics: The future is bright and complicated!Structural dynamics (Melville, N.Y.) · 2023
    Article
  7. Leveraging intrinsic flexibility to engineer enhanced enzyme catalytic activity.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  8. Article
  9. Structure-Based Design of an RNase Chimera for Antimicrobial Therapy.International journal of molecular sciences · 2021
    Article
  10. Review
  11. 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

6 authors.

Donald GagnéINRS-Institut Armand-Frappier, Université du Québec, 531 Boulevard des Prairies, Laval, QC H7V 1B7, Canada.
Rachel L FrenchDepartment of Biochemistry and Molecular Genetics, University of Illinois at Chicago, 900 South Ashland, Chicago, IL 60607, USA.
Chitra NarayananINRS-Institut Armand-Frappier, Université du Québec, 531 Boulevard des Prairies, Laval, QC H7V 1B7, Canada.
Miljan SimonovićDepartment of Biochemistry and Molecular Genetics, University of Illinois at Chicago, 900 South Ashland, Chicago, IL 60607, USA.
Pratul K AgarwalComputational Biology Institute and Computer Science and Mathematics Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37830, USA; Department of Biochemistry, Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, USA.
Nicolas DoucetINRS-Institut Armand-Frappier, Université du Québec, 531 Boulevard des Prairies, Laval, QC H7V 1B7, Canada; PROTEO, the Québec Network for Research on Protein Function, Engineering, and Applications, 1045 Avenue de la Médecine, Université Laval, QC G1V 0A6, Canada; GRASP, the Groupe de Recherche Axé sur la Structure des Protéines, 3649 Promenade Sir William Osler, McGill University, Montréal, QC H3G 0B1, Canada. Electronic address: nicolas.doucet@iaf.inrs.ca.

Funding

Conformational sub-states in enzyme catalysis: Applications to ribonucleaseR01GM105978 · NIGMS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI AGARWAL, PRATUL K, CHENNUBHOTLA, SRINIVAS CHAKRA · 2014 to 2018
$2.8M
NIGMS NIH HHS R01 GM105978NIGMS NIH HHS R01GM105978
6 · The paper itself

Abstract

The role of internal dynamics in enzyme function is highly debated. Specifically, how small changes in structure far away from the reaction site alter protein dynamics and overall enzyme mechanisms is of wide interest in protein engineering. Using RNase A as a model, we demonstrate that elimination of a single methyl group located >10 Å away from the reaction site significantly alters conformational integrity and binding properties of the enzyme. This A109G mutation does not perturb structure or thermodynamic stability, both in the apo and ligand-bound states. However, significant enhancement in conformational dynamics was observed for the bound variant, as probed over nano- to millisecond timescales, resulting in major ligand repositioning. These results illustrate the large effects caused by small changes in structure on long-range conformational dynamics and ligand specificities within proteins, further supporting the importance of preserving wild-type dynamics in enzyme systems that rely on flexibility for function.

Indexed as

Catalytic DomainMolecular Dynamics SimulationAdenosine MonophosphateAmino Acid SequenceAnimalsCattleMolecular Sequence DataMutationProtein BindingRibonuclease, PancreaticUridine MonophosphateAdenosine MonophosphateRibonuclease, PancreaticUridine Monophosphate

Identifiers

PMID26655472
PMCPMC4680847

What OpenQuestion holds

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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.