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Microtubules are in close proximity to the mitochondria in the cardiomyocyte. Nanotunnels (top right) span adjacent mitochondria. Inset (middle): Mitochondria interact with both kinesin and dynein motors. Inset (left): VDAC is inhibited by free tubulin through binding of the β-tubulin tail. (A color version of this figure is available in the online journal.)
