Single-molecule FRET imaging of GPCR dimers in living cells.
Journal
Nature methods
ISSN: 1548-7105
Titre abrégé: Nat Methods
Pays: United States
ID NLM: 101215604
Informations de publication
Date de publication:
04 2021
04 2021
Historique:
received:
25
02
2020
accepted:
29
01
2021
pubmed:
10
3
2021
medline:
29
6
2021
entrez:
9
3
2021
Statut:
ppublish
Résumé
Class C G protein-coupled receptors (GPCRs) are known to form stable homodimers or heterodimers critical for function, but the oligomeric status of class A and B receptors, which constitute >90% of all GPCRs, remains hotly debated. Single-molecule fluorescence resonance energy transfer (smFRET) is a powerful approach with the potential to reveal valuable insights into GPCR organization but has rarely been used in living cells to study protein systems. Here, we report generally applicable methods for using smFRET to detect and track transmembrane proteins diffusing within the plasma membrane of mammalian cells. We leverage this in-cell smFRET approach to show agonist-induced structural dynamics within individual metabotropic glutamate receptor dimers. We apply these methods to representative class A, B and C receptors, finding evidence for receptor monomers, density-dependent dimers and constitutive dimers, respectively.
Identifiants
pubmed: 33686301
doi: 10.1038/s41592-021-01081-y
pii: 10.1038/s41592-021-01081-y
pmc: PMC8232828
mid: NIHMS1714965
doi:
Substances chimiques
Receptors, G-Protein-Coupled
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
397-405Subventions
Organisme : NIMH NIH HHS
ID : T32 MH018870
Pays : United States
Organisme : NIMH NIH HHS
ID : R01 MH054137
Pays : United States
Organisme : NIGMS NIH HHS
ID : R01 GM098859
Pays : United States
Organisme : NIGMS NIH HHS
ID : R35 GM119619
Pays : United States
Organisme : NEI NIH HHS
ID : R15 EY024451
Pays : United States
Commentaires et corrections
Type : CommentIn
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