Evidence map›Paper›PMID 20731381›Full record

ArticleJournal of the American Chemical Society2010

Mapping solvation dynamics at the function site of flavodoxin in three redox states.

Chih-Wei Chang, Ting-Fang He, Lijun Guo, Jeffrey A Stevens, Tanping Li, Lijuan Wang, Dongping Zhong

Abstract read
In one paragraph

Article in Journal of the American Chemical Society, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing 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

25 citing papers in PubMed.

  1. Article
  2. Ultrafast Dynamics and Catalytic Mechanism of Fatty Acid Photodecarboxylase.Angewandte Chemie (International ed. in English) · 2022
    Article
  3. Roles of Ferredoxin-NADPAntioxidants (Basel, Switzerland) · 2022
    Review
  4. The nature of proton-coupled electron transfer in a blue light using flavin domain.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  5. Revealing the origin of multiphasic dynamic behaviors in cyanobacteriochrome.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Dynamics and mechanisms of DNA repair by photolyase.Physical chemistry chemical physics : PCCP · 2015
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Determining complete electron flow in the cofactor photoreduction of oxidized photolyase.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
  19. Ultrafast real-time visualization of active site flexibility of flavoenzyme thymidylate synthase ThyX.Proceedings of the National Academy of Sciences of the United States of America · 2013
    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

7 authors.

Chih-Wei ChangDepartment of Physics, Ohio State University, Columbus, Ohio 43210, USA.
Ting-Fang He
Lijun Guo
Jeffrey A Stevens
Tanping Li
Lijuan Wang
Dongping Zhong

Funding

Functional Dynamics and Molecular Mechanism of PhotolayseR01GM074813 · NIGMS · OHIO STATE UNIVERSITY · PI ZHONG, DONGPING · 2007 to 2016
$2.6M
NIGMS NIH HHS GM074854NIGMS NIH HHS R01 GM074813
6 · The paper itself

Abstract

Flavoproteins are unique redox coenzymes, and the dynamic solvation at their function sites is critical to the understanding of their electron-transfer properties. Here, we report our complete characterization of the function-site solvation of holoflavodoxin in three redox states and of the binding-site solvation of apoflavodoxin. Using intrinsic flavin cofactor and tryptophan residue as the local optical probes with two site-specific mutations, we observed distinct ultrafast solvation dynamics at the function site in the three states and at the related recognition site of the cofactor, ranging from a few to hundreds of picoseconds. The initial ultrafast motion in 1-2.6 ps reflects the local water-network relaxation around the shallow, solvent-exposed function site. The second relaxation in 20-40 ps results from the coupled local water-protein fluctuation. The third dynamics in hundreds of picoseconds is from the intrinsic fluctuation of the loose loops flanking the cofactor at the function site. These solvation dynamics with different amplitudes well correlate with the redox states from the oxidized form, to the more rigid semiquinone and to the much looser hydroquinone. This observation of the redox control of local protein conformation plasticity and water network flexibility is significant, and such an intimate relationship is essential to the biological function of interprotein electron transfer.

Indexed as

ThermodynamicsCrystallography, X-RayFlavodoxinModels, MolecularOxidation-ReductionSolventsFlavodoxinSolvents

Identifiers

PMID20731381
PMCPMC2943414

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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.