SLC25A39 is necessary for mitochondrial glutathione import in mammalian cells Request PDF Up regulated SLC25A39 promotes cell growth and metastasis via regulating ROS production in colorectal cancer 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 Researchers Reveal How Mitochondria Import Antioxidants Technology Networks The glutathione system maintains the thiol redox balance in the mitochondria of fission yeast ScienceDirect