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Single molecule tracking fluorescence microscopy in mitochondria reveals highly dynamic but confined movement of Tom40
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology.
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2011 (English)In: Scientific reports, ISSN 2045-2322, Vol. 1, 195- p.Article in journal (Refereed) Published
Abstract [en]

Tom40 is an integral protein of the mitochondrial outer membrane, which as the central component of the Translocase of the Outer Membrane (TOM) complex forms a channel for protein import. We characterize the diffusion properties of individual Tom40 molecules fused to the photoconvertable fluorescent protein Dendra2 with millisecond temporal resolution. By imaging individual Tom40 molecules in intact isolated yeast mitochondria using photoactivated localization microscopy with sub-diffraction limited spatial precision, we demonstrate that Tom40 movement in the outer mitochondrial membrane is highly dynamic but confined in nature, suggesting anchoring of the TOM complex as a whole.

Place, publisher, year, edition, pages
2011. Vol. 1, 195- p.
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Medical and Health Sciences
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URN: urn:nbn:se:uu:diva-171504DOI: 10.1038/srep00195ISI: 000300564800001OAI: oai:DiVA.org:uu-171504DiVA: diva2:511204
Available from: 2012-03-20 Created: 2012-03-20 Last updated: 2012-03-20Bibliographically approved

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Elf, Johan

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