Evidence map›Paper›PMID 32873643›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

RubyACRs, nonalgal anion channelrhodopsins with highly red-shifted absorption.

Elena G Govorunova, Oleg A Sineshchekov, Hai Li, Yumei Wang, Leonid S Brown, John L Spudich

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing 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

40 citing papers in PubMed.

  1. Article
  2. Multicolor photoreactions of the red light-activated channelrhodopsin Chrimson.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Apusomonad rhodopsins: A new family of ultraviolet to blue light-absorbing rhodopsin channels.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  4. Article
  5. Blue-shifted ancyromonad channelrhodopsins for multiplex optogenetics.bioRxiv : the preprint server for biology · 2025
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Sequential absorption of two photons creates a bistable form of RubyACR responsible for its strong desensitization.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  16. Article
  17. Potassium-selective channelrhodopsins.Biophysics and physicobiology · 2023
    Article
  18. Article
  19. Article
  20. Optogenetics at the presynapse.Nature neuroscience · 2022
    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.

Elena G GovorunovaCenter for Membrane Biology, Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center, McGovern Medical School, Houston, TX 77030.ORCID 0000-0003-0522-9683
Oleg A SineshchekovCenter for Membrane Biology, Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center, McGovern Medical School, Houston, TX 77030.ORCID 0000-0002-6358-7764
Hai LiCenter for Membrane Biology, Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center, McGovern Medical School, Houston, TX 77030.ORCID 0000-0002-3969-6709
Yumei WangCenter for Membrane Biology, Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center, McGovern Medical School, Houston, TX 77030.ORCID 0000-0002-0551-3468
Leonid S BrownDepartment of Physics and Biophysics Interdepartmental Group, University of Guelph, Guelph, ON N1G 2W1, Canada.ORCID 0000-0002-5614-8317
John L SpudichCenter for Membrane Biology, Department of Biochemistry and Molecular Biology, The University of Texas Health Science Center, McGovern Medical School, Houston, TX 77030; John.L.Spudich@uth.tmc.edu.

Funding

Structure/Function of Microbial Sensory RhodopsinsR01GM027750 · NIGMS · YESHIVA UNIVERSITY · PI SPUDICH, JOHN LEE · 1985 to 2020
$6.6M
NIGMS NIH HHS R01 GM027750
6 · The paper itself

Abstract

Channelrhodopsins are light-gated ion channels widely used to control neuronal firing with light (optogenetics). We report two previously unknown families of anion channelrhodopsins (ACRs), one from the heterotrophic protists labyrinthulea and the other from haptophyte algae. Four closely related labyrinthulea ACRs, named RubyACRs here, exhibit a unique retinal-binding pocket that creates spectral sensitivities with maxima at 590 to 610 nm, the most red-shifted channelrhodopsins known, long-sought for optogenetics, and more broadly the most red-shifted microbial rhodopsins thus far reported. We identified three spectral tuning residues critical for the red-shifted absorption. Photocurrents recorded from the RubyACR from

Indexed as

AnionsChannelrhodopsinsCryptophytaHEK293 CellsHumansIon Channel GatingIon ChannelsLightMembrane PotentialsNeuronsOptogeneticsRhodopsinAnionsChannelrhodopsinsIon ChannelsRhodopsinchannelrhodopsinsion channelsoptogeneticsphotobiology

Identifiers

PMID32873643
PMCPMC7502701

What OpenQuestion holds

Textmetadata
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.