Evidence map›Paper›PMID 20116858›Full record

ArticleJournal of inorganic biochemistry2010

QM/MM X-ray refinement of zinc metalloenzymes.

Xue Li, Seth A Hayik, Kenneth M Merz

Abstract read
In one paragraph

Article in Journal of inorganic biochemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

21 citing papers in PubMed.

  1. A database overview of metal-coordination distances in metalloproteins.Acta crystallographica. Section D, Structural biology · 2024
    Article
  2. Article
  3. 'International journal of molecular sciences · 2021
    Article
  4. Force Field Parameters for FeMolecules (Basel, Switzerland) · 2021
    Article
  5. Article
  6. Quantum crystallography.Chemical science · 2017
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Conformational Analysis of Free and Bound Retinoic Acid.Journal of chemical theory and computation · 2012
    Article
  15. PDB ligand conformational energies calculated quantum-mechanically.Journal of chemical information and modeling · 2012
    Article
  16. QM/MM refinement and analysis of protein bound retinoic acid.Journal of computational chemistry · 2012
    Article
  17. Nuclear magnetic resonance signal chemical shifts and molecular simulations: a multidisciplinary approach to modeling copper protein structures.Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry · 2012
    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.

Xue LiDepartment of Chemistry and the Quantum Theory Project, 2328 New Physics Building, PO Box 118435, University of Florida, Gainesville, FL 32611-8435, USA.
Seth A Hayik
Kenneth M Merz

Funding

Mettalloenzyme Structure/FunctionR01GM044974 · NIGMS · UNIVERSITY OF FLORIDA · PI MERZ, KENNETH M. · 1997 to 2010
$2.0M
The Bioinorganic Chemistry of Nickel: The UreasesR01GM066859 · NIGMS · UNIVERSITY OF FLORIDA · PI DEUMENS, ERIK · 2003 to 2011
$1.9M
Enhancement and Deployment of the Quantum Mechanical X-ray Refinement ModelR44GM079899 · NIGMS · QUANTUMBIO, INC. · PI WESTERHOFF, LANCE M · 2008 to 2010
$1.4M
THEORETICAL STUDY--METALLOENZYME STRUCTURE AND FUNCTIONR29GM044974 · NIGMS · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI MERZ, KENNETH M · 1991 to 1995
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NIGMS NIH HHS GM044974NIGMS NIH HHS GM079899NIGMS NIH HHS R01 GM044974NIGMS NIH HHS R01 GM066859NIGMS NIH HHS R44 GM079899
6 · The paper itself

Abstract

Zinc metalloenzymes play an important role in biology. However, due to the limitation of molecular force field energy restraints used in X-ray refinement at medium or low resolutions, the precise geometry of the zinc coordination environment can be difficult to distinguish from ambiguous electron density maps. Due to the difficulties involved in defining accurate force fields for metal ions, the QM/MM (quantum-mechanical/molecular-mechanical) method provides an attractive and more general alternative for the study and refinement of metalloprotein active sites. Herein we present three examples that indicate that QM/MM based refinement yields a superior description of the crystal structure based on R and R(free) values and on the inspection of the zinc coordination environment. It is concluded that QM/MM refinement is an useful general tool for the improvement of the metal coordination sphere in metalloenzyme active sites.

Indexed as

Protein ConformationAlcohol DehydrogenaseCatalytic DomainCrystallography, X-RayFungal ProteinsHumansMetalloexopeptidasesModels, MolecularMolecular Sequence DataMolecular StructureQuantum TheoryThermodynamicsZincAlcohol DehydrogenaseFungal ProteinsMetalloexopeptidasesZinc

Identifiers

PMID20116858
PMCPMC2843799

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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.