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The in vivo mechanics of the magnetotactic backbone as revealed by correlative FLIM-FRET and STED microscopy

  • Protein interaction and protein imaging strongly benefit from the advancements in time-resolved and superresolution fluorescence microscopic techniques. However, the techniques were typically applied separately and ex vivo because of technical challenges and the absence of suitable fluorescent protein pairs. Here, we show correlative in vivo fluorescence lifetime imaging microscopy Förster resonance energy transfer (FLIM-FRET) and stimulated emission depletion (STED) microscopy to unravel protein mechanics and structure in living cells. We use magnetotactic bacteria as a model system where two proteins, MamJ and MamK, are used to assemble magnetic particles called magnetosomes. The filament polymerizes out of MamK and the magnetosomes are connected via the linker MamJ. Our system reveals that bacterial filamentous structures are more fragile than the connection of biomineralized particles to this filament. More importantly, we anticipate the technique to find wide applicability for the study and quantification of biological processes in living cells and at high resolution.

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Metadaten
Author:Erika Günther, André Klauß, Mauricio Toro-Nahuelpan, Dirk Schüler, Carsten HilleORCiD, Damien Faivre
URN:urn:nbn:de:kobv:526-opus4-14802
DOI (Version of Record):https://doi.org/10.1038/s41598-019-55804-5
ISSN:2045-2322
Parent Title (English):Scientific Reports
Document Type:Article
Language:English
Year of Publication:2019
Publishing Institution:Technische Hochschule Wildau
Release Date:2021/09/03
Volume:9
Article Number:19615
Source:Günther, E., Klauß, A., Toro-Nahuelpan, M. et al. The in vivo mechanics of the magnetotactic backbone as revealed by correlative FLIM-FRET and STED microscopy. Sci Rep 9, 19615 (2019). https://doi.org/10.1038/s41598-019-55804-5
Faculties an central facilities:Zentrale Einrichtungen
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International
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