Tracking the activity and position of mitochondrial beta-barrel proteins. Wang et al. Springer Protocols, volume 2778, in press (2023)

28. April 2023 /

Total interference reflection fluorescence (TIRF) microscopy of lipid bilayers is an effective technique for studying the lateral movement and ion channel activity of single integral membrane proteins. Here we describe how to integrate the mitochondrial outer membrane preprotein translocase TOM-CC and its beta-barrel protein-conducting channel Tom40 into supported lipid bilayers to identify possible relationships between movement and channel activity. We propose that our approach can be readily applied to membrane protein channels where transient tethering to either membrane-proximal or intramembrane structures is accompanied by a change in channel permeation.

For reference, see: T racking the activity and position of mitochondrial beta-barrel proteins. Wang S. & Nussberger S.  In: Transmembrane beta-barrel proteins: Methods and Protocols, Ieva, R. ed., Springer Protocols - Methods in Molecular Biology, volume 2778, ISBN 978-1-0716-3733-3, in press (2023)

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