Evidence map›Paper›PMID 24139041›Full record

ArticleNeuron2013

In vivo expression of a light-activatable potassium channel using unnatural amino acids.

Ji-Yong Kang, Daichi Kawaguchi, Irene Coin, Zheng Xiang, Dennis D M O'Leary, Paul A Slesinger, Lei Wang

Open access · bronzeAbstract read
In one paragraph

Article in Neuron, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
4.8field-weighted citation impact, top 4% of its field
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

70 citing papers in PubMed, 127 citations in OpenAlex.

  1. Modular architecture of KEMBO reports · 2025
    Review
  2. Review
  3. Review
  4. Light-Activatable Ubiquitin for Studying Linkage-Specific Ubiquitin Chain Formation Kinetics.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  5. Review
  6. Review
  7. Review
  8. Review
  9. Review
  10. Review
  11. Review
  12. Article
  13. Review
  14. Article
  15. Review
  16. Evolution and synthetic biology.Current opinion in microbiology · 2023
    Review
  17. Article
  18. Review
  19. Article
  20. Review

10 more citing papers are in PubMed but not listed here.

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 at 1 institution in 1 country.

Ji-Yong KangThe Jack H. Skirball Center for Chemical Biology and Proteomics, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
Daichi Kawaguchi
Irene Coin
Zheng Xiang
Dennis D M O'Leary
Paul A Slesinger
Lei Wang
Salk Institute for Biological Studies · US

Funding

Viral Vector Core (VVC)P30CA014195 · NCI · SALK INSTITUTE FOR BIOLOGICAL STUDIES · PI Ye Zheng · 1985 to 2026
$82.8M
EARLY EVENTS IN CORTICAL DEVELOPMENTR01NS031558 · NINDS · SALK INSTITUTE FOR BIOLOGICAL STUDIES · PI O'LEARY, DENNIS D · 1994 to 2015
$4.5M
Early Events in Cortical DevelopmentR37NS031558 · NINDS · SALK INSTITUTE FOR BIOLOGICAL STUDIES · PI O'LEARY, DENNIS D · 2004 to 2010
$4.0M
Genetically Encoding Novel Amino Acids to Investigate Wnt Signaling in C. elegansDP2OD004744 · OD · SALK INSTITUTE FOR BIOLOGICAL STUDIES · PI WANG, LEI · 2008 to 2009
$3.0M
Transcriptional Factors in Forebrain PatterningR01MH086147 · NIMH · SALK INSTITUTE FOR BIOLOGICAL STUDIES · PI O'LEARY, DENNIS D · 2009 to 2013
$2.3M
NCI NIH HHS P30 CA014195NCI NIH HHS P30CA014195NIH HHS 1DP2OD004744-01NIH HHS DP2 OD004744NIMH NIH HHS R01 MH086147NIMH NIH HHS R01MH086147NINDS NIH HHS R01 NS031558NINDS NIH HHS R01NS31558NINDS NIH HHS R37 NS031558
6 · The paper itself

Abstract

Optical control of protein function provides excellent spatial-temporal resolution for studying proteins in situ. Although light-sensitive exogenous proteins and ligands have been used to manipulate neuronal activity, a method for optical control of neuronal proteins using unnatural amino acids (Uaa) in vivo is lacking. Here, we describe the genetic incorporation of a photoreactive Uaa into the pore of an inwardly rectifying potassium channel Kir2.1. The Uaa occluded the pore, rendering the channel nonconducting, and, on brief light illumination, was released to permit outward K(+) current. Expression of this photoinducible inwardly rectifying potassium (PIRK) channel in rat hippocampal neurons created a light-activatable PIRK switch for suppressing neuronal firing. We also expanded the genetic code of mammals to express PIRK channels in embryonic mouse neocortex in vivo and demonstrated a light-activated PIRK current in cortical neurons. These principles could be generally expanded to other proteins expressed in the brain to enable optical regulation.

Indexed as

LightAnimalsCerebral CortexExcitatory Amino Acid AgonistsGene ExpressionHEK293 CellsHippocampusHumansMembrane PotentialsMiceNeural InhibitionNeuronsPotassium Channels, Inwardly RectifyingExcitatory Amino Acid AgonistsKir2.1 channelPotassium Channels, Inwardly Rectifying

Identifiers

PMID24139041
PMCPMC3815458
OpenAlexW2086244730

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.