Evidence map›Paper›PMID 31896714›Full record

ArticleScience (New York, N.Y.)2020

Electrostatic control of photoisomerization pathways in proteins.

Matthew G Romei, Chi-Yun Lin, Irimpan I Mathews, Steven G Boxer

Abstract read
In one paragraph

Article in Science (New York, N.Y.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing 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

50 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. A twisted chromophore powers a turn-on fluorescent protein chloride sensor.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  9. Article
  10. XFEL Beamline Optical Instrumentation for Ultrafast Science.The journal of physical chemistry. B · 2024
    Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Matthew G RomeiDepartment of Chemistry, Stanford University, Stanford, CA 94305, USA. sboxer@stanford.edu.ORCID 0000-0001-6798-7493
Chi-Yun LinDepartment of Chemistry, Stanford University, Stanford, CA 94305, USA. sboxer@stanford.edu.ORCID 0000-0001-6555-8767
Irimpan I MathewsStanford Synchrotron Radiation Lightsource, Menlo Park, CA 94025, USA.ORCID 0000-0001-6254-3519
Steven G BoxerDepartment of Chemistry, Stanford University, Stanford, CA 94305, USA.ORCID 0000-0001-9167-4286

Funding

X-ray Absorption Spectroscopy (XAS) pp.711-759P41GM103393 · NIGMS · STANFORD UNIVERSITY · PI HODGSON, KEITH O · 2012 to 2019
$30.6M
Biophysical Studies of Macromolecules and Molecular AssembliesR35GM118044 · NIGMS · STANFORD UNIVERSITY · PI STEVEN G. BOXER · 2016 to 2026
$7.2M
NIGMS NIH HHS P41 GM103393NIGMS NIH HHS R35 GM118044
6 · The paper itself

Abstract

Rotation around a specific bond after photoexcitation is central to vision and emerging opportunities in optogenetics, super-resolution microscopy, and photoactive molecular devices. Competing roles for steric and electrostatic effects that govern bond-specific photoisomerization have been widely discussed, the latter originating from chromophore charge transfer upon excitation. We systematically altered the electrostatic properties of the green fluorescent protein chromophore in a photoswitchable variant, Dronpa2, using amber suppression to introduce electron-donating and electron-withdrawing groups to the phenolate ring. Through analysis of the absorption (color), fluorescence quantum yield, and energy barriers to ground- and excited-state isomerization, we evaluate the contributions of sterics and electrostatics quantitatively and demonstrate how electrostatic effects bias the pathway of chromophore photoisomerization, leading to a generalized framework to guide protein design.

Indexed as

Static ElectricityFluorescenceIsomerismLuminescent ProteinsProtein ConformationRotationLuminescent Proteins

Identifiers

PMID31896714
PMCPMC7035911

What OpenQuestion holds

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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.