Evidence map›Paper›PMID 28876923›Full record

ArticleJournal of the American Chemical Society2017

Spirohexene-Tetrazine Ligation Enables Bioorthogonal Labeling of Class B G Protein-Coupled Receptors in Live Cells.

Carlo P Ramil, Maoqing Dong, Peng An, Tracey M Lewandowski, Zhipeng Yu, Laurence J Miller, Qing Lin

Open access · greenAbstract read
In one paragraph

Article in Journal of the American Chemical Society, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
4.5field-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

33 citing papers in PubMed, 67 citations in OpenAlex.

  1. Review
  2. Site-Selective Peptide and Protein Functionalization with Cyclopropenium Cations.Angewandte Chemie (International ed. in English) · 2025
    Article
  3. Article
  4. Review
  5. Review
  6. Cannabinoid Receptor Signaling is Dependent on Sub-Cellular Location.bioRxiv : the preprint server for biology · 2024
    Article
  7. Minimalist TetrazineJournal of the American Chemical Society · 2024
    Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Photoclick Chemistry: A Bright Idea.Chemical reviews · 2021
    Review
  16. Article
  17. Bioorthogonal chemistry.Nature reviews. Methods primers · 2021
    Article
  18. Article
  19. Review
  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 at 2 institutions in 1 country.

Carlo P RamilDepartment of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States.ORCID 0000-0002-1036-855X
Maoqing DongDepartment of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic , Scottsdale, Arizona 85259, United States.
Peng AnDepartment of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States.
Tracey M LewandowskiDepartment of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States.
Zhipeng YuDepartment of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States.
Laurence J MillerDepartment of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic , Scottsdale, Arizona 85259, United States.
Qing LinDepartment of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States.ORCID 0000-0002-9196-5718
University at Buffalo, State University of New York · USMayo Clinic in Arizona · US

Funding

Development and Applications of Photoinducible Bioorthogonal ChemistryR01GM085092 · NIGMS · STATE UNIVERSITY OF NEW YORK AT BUFFALO · PI LIN, QING · 2009 to 2017
$2.8M
NIGMS NIH HHS R01 GM085092
6 · The paper itself

Abstract

A new bioorthogonal reactant pair, spiro[2.3]hex-1-ene (Sph) and 3,6-di(2-pyridyl)-s-tetrazine (DpTz), for the strain-promoted inverse electron-demand Diels-Alder cycloaddition, that is, tetrazine ligation, is reported. As compared to the previously reported strained alkenes such as trans-cyclooctene (TCO) and 1,3-disubstituted cyclopropene, Sph exhibits balanced reactivity and stability in tetrazine ligation with the protein substrates. A lysine derivative of Sph, SphK, was site-selectively incorporated into the extracellular loop regions (ECLs) of GCGR and GLP-1R, two members of class B G protein-coupled receptors (GPCRs) in mammalian cells with the incorporation efficiency dependent on the location. Subsequent bioorthogonal reactions with the fluorophore-conjugated DpTz reagents afforded the fluorescently labeled GCGR and GLP-1R ECL mutants with labeling yield as high as 68%. A multitude of functional assays were performed with these GPCR mutants, including ligand binding, ligand-induced receptor internalization, and ligand-stimulated intracellular cAMP accumulation. Several positions in the ECL3s of GCGR and GLP-1R were identified that tolerate SphK mutagenesis and subsequent bioorthogonal labeling. The generation of functional, fluorescently labeled ECL3 mutants of GCGR and GLP-1R should allow biophysical studies of conformation dynamics of this important class of GPCRs in their native environment in live cells.

Indexed as

AlkenesAnimalsCell SurvivalCycloaddition ReactionFluorescent DyesHEK293 CellsHumansLigandsMutationReceptors, G-Protein-CoupledSpiro CompoundsStaining and Labeling1-hexeneAlkenesFluorescent DyesLigandsReceptors, G-Protein-CoupledSpiro Compounds

Identifiers

PMID28876923
PMCPMC5753752
OpenAlexW2751705296

What OpenQuestion holds

Textmetadata
LicenceTDM
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.