Goba, I. ; Goricanec, D.* ; Schum, D.* ; Hillenbrand, M.* ; Plückthun, A.* ; Hagn, F.
Probing the conformation states of neurotensin receptor 1 variants by NMR site-directed methyl labeling.
ChemBioChem 22, 139-146 (2021)
G protein-coupled receptors (GPCRs) are key players in mediating signal transduction across the cell membrane. However, due to their intrinsic instability, many GPCRs are not suitable for structural investigations. Various approaches have been developed in recent years to remedy this situation, ranging from the use of more native membrane mimetics to protein-stabilization methods. The latter approach typically results in GPCRs that contain various numbers of mutations. However, probing the functionality of such variants by in vitro and in vivo assays is often time consuming. In addition, to validate the suitability of such GPCRs for structural investigations, an assessment of their conformation state is required. NMR spectroscopy has been proven to be suitable to probe the conformation state of GPCRs in solution. Here, by using chemical labeling with an isotope-labeled methyl probe, we show that the activity and the conformation state of stabilized neurotensin receptor 1 variants obtained from directed evolution can be efficiently assayed in 2D NMR experiments. This strategy enables the quantification of the active and inactive conformation states and the derivation of an estimation of the basal as well as agonist-induced activity of the receptor. Furthermore, this assay can be used as a readout when re-introducing agonist-dependent signaling into a highly stabilized, and thus rigidified, receptor by mutagenesis. This approach will be useful in cases where low production yields do not permit the addition of labeled compounds to the growth medium and where 1D NMR spectra of selectively F-19-labeled receptors are not sufficient to resolve signal overlap for a more detailed analysis.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Dynamics ; Gpcrs ; Membrane ; Nmr Spectroscopy ; Signaling; Phospholipid-bilayer Nanodiscs; Protein-coupled Receptor; Detergent Stability; Activation; Evolution; Dynamics; Gpcr
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2021
Prepublished im Jahr
2020
HGF-Berichtsjahr
2020
ISSN (print) / ISBN
1439-4227
e-ISSN
1439-7633
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 22,
Heft: 5,
Seiten: 139-146
Artikelnummer: ,
Supplement: ,
Reihe
Verlag
Wiley
Verlagsort
Postfach 101161, 69451 Weinheim, Germany
Tag d. mündl. Prüfung
0000-00-00
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Gutachter
Prüfer
Topic
Hochschule
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Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30505 - New Technologies for Biomedical Discoveries
Forschungsfeld(er)
Enabling and Novel Technologies
PSP-Element(e)
G-553600-001
Förderungen
Projekt DEAL
Schweizerische Nationalfonds
Helmholtz Society
Deutsche Forschungsgemeinschaft
Copyright
Erfassungsdatum
2020-12-01