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001-es BibID:	BIBFORM083089
035-os BibID:	(WoS)000509420400074 (Scopus)85078380578
Első szerző:	Rehó Bálint
Cím:	Simultaneous Mapping of Molecular Proximity and Comobility Reveals Agonist-Enhanced Dimerization and DNA Binding of Nuclear Receptors / Rehó Bálint, Lau Lukas, Mocsár Gábor, Müller Gabriele, Fadel Lina, Brázda Péter, Nagy László, Tóth Katalin, Vámosi György
Dátum:	2020
ISSN:	0003-2700
Megjegyzések:	Single Plane Illumination Microscopy (SPIM) revolutionized time lapse imaging of live cells and organisms due to its high speed and reduced photodamage. Quantitative mapping of molecular (co)mobility by fluorescence (cross-) correlation spectroscopy (F(C)CS) in a SPIM has been introduced to reveal molecular diffusion and binding. A complementary aspect of interactions is proximity, which can be studied by Fo?rster resonance energy transfer (FRET). Here, we extend SPIM-FCCS by alternating laser excitation, which reduces false positive cross-correlation and facilitates comapping of FRET. Thus, different aspects of interacting systems can be studied simultaneously, and molecular subpopulations can be discriminated by multiparameter analysis. After demonstrating the benefits of the method on the AP-1 transcription factor, the dimerization and DNA binding behavior of retinoic acid receptor (RAR) and retinoid X receptor (RXR) is revealed, and an extension of the molecular switch model of the nuclear receptor action is proposed. Our data imply that RAR agonist enhances RAR?RXR heterodimerization, and chromatin binding/dimerization are positively correlated. We also propose a ligand induced conformational change bringing the N-termini of RAR and RXR closer together. The RXR agonist increased homodimerization of RXR suggesting that RXR may act as an autonomous transcription factor.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Analytical Chemistry. - 92 : 2 (2020), p. 2207-2215. -
További szerzők:	Lau, Lukas Mocsár Gábor (1981-) (biofizikus) Müller, Gabriele Fadel, Lina (1988-) (gyógyszerész) Brázda Péter (1980-) (biológus, angol-magyar szakfordító) Nagy László (1966-) (molekuláris sejtbiológus, biokémikus) Tóth Katalin (biofizikus) Vámosi György (1967-) (biofizikus)
Pályázati támogatás:	GINOP-2.3.2-15-2016-00026 GINOP GINOP-2.3.3-15-2016-00030 GINOP NN129371 from the National Research, Development, and Innovation Office, Hungary Egyéb German Academic Exchange Service Egyéb Tempus Public Foundation 273478 Egyéb
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