Evidence map›Paper›PMID 33795886›Full record

ArticleNature chemical biology2021

The HaloTag as a general scaffold for far-red tunable chemigenetic indicators.

Claire Deo, Ahmed S Abdelfattah, Hersh K Bhargava, Adam J Berro, Natalie Falco, Helen Farrants, Benjamien Moeyaert, Mariam Chupanova, Luke D Lavis, Eric R Schreiter

Abstract read
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In one paragraph

Article in Nature chemical biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 85 papers.

0numbers the graph read from it
0cells of the map it votes in
85citing papers in PubMed
11.1field-weighted citation impact, top 1% 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

85 citing papers in PubMed, 174 citations in OpenAlex.

  1. Article
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  4. Review
  5. Review
  6. Article
  7. Tension TRAAKer: a chemigenetic fluorescent membrane tension reporter.bioRxiv : the preprint server for biology · 2026
    Article
  8. Precise calcium-to-spike inference using biophysical generative models.bioRxiv : the preprint server for biology · 2026
    Article
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  18. Article
  19. Protein engineering: status report.Protein engineering, design & selection : PEDS · 2026
    Review
  20. Article

25 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

10 authors at 1 institution in 3 countries.

Claire Deo *Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.ORCID http://orcid.org/0000-0003-0119-3118
Ahmed S Abdelfattah *Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.ORCID http://orcid.org/0000-0001-8131-1772
Hersh K BhargavaJanelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.ORCID http://orcid.org/0000-0003-4675-9293
Adam J BerroJanelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.
Natalie FalcoJanelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.
Helen FarrantsJanelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.
Benjamien MoeyaertJanelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.ORCID http://orcid.org/0000-0003-1643-9993
Mariam ChupanovaJanelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.
Luke D LavisJanelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA. lavisl@janelia.hhmi.org.ORCID http://orcid.org/0000-0002-0789-6343
Eric R SchreiterJanelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA. schreitere@janelia.hhmi.org.ORCID http://orcid.org/0000-0002-2864-7469
Howard Hughes Medical Institute · US

Funding

Howard Hughes Medical Institute
6 · The paper itself

Abstract

Functional imaging using fluorescent indicators has revolutionized biology, but additional sensor scaffolds are needed to access properties such as bright, far-red emission. Here, we introduce a new platform for 'chemigenetic' fluorescent indicators, utilizing the self-labeling HaloTag protein conjugated to environmentally sensitive synthetic fluorophores. We solve a crystal structure of HaloTag bound to a rhodamine dye ligand to guide engineering efforts to modulate the dye environment. We show that fusion of HaloTag with protein sensor domains that undergo conformational changes near the bound dye results in large and rapid changes in fluorescence output. This generalizable approach affords bright, far-red calcium and voltage sensors with highly tunable photophysical and chemical properties, which can reliably detect single action potentials in cultured neurons.

Indexed as

Action PotentialsAnimalsBioengineeringCalciumCells, CulturedCrystallography, X-RayElectrophysiological PhenomenaFluorescent DyesHydrolasesKineticsMolecular ConformationMolecular StructureNeuronsPrimary Cell CultureProteinsRatsCalciumFluorescent Dyeshaloalkane dehalogenaseHydrolasesProteinsRhodamines

Identifiers

PMID33795886
OpenAlexW3146748761

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.