SLC25A48 controls mitochondrial choline import and metabolism Choline metabolism depends on its mitochondrial import, but the mechanism remains unknown. SLC25A48 is a previously uncharacterized mitochondrial inner membrane carrier protein. The Frontiers Regulation of Heme Synthesis by Mitochondrial Homeostasis Proteins Mitochondrial Glutathione in Cellular Redox Homeostasis and Disease Manifestation Metabolic sensing and control in mitochondria: Molecular Cell Use of Genetically Encoded Tools to Interrogate Mechanisms of Glutathione Homeostasis from Mitochondria to Mice