Imported across the plasma membrane by SLC1A5, glutamine has emerged as a metabolic fuel that is catabolized by mitochondrial glutaminase to support tumor growth. The missing link between cytoplasmic and mitochondrial glutamine metabolism is now provided by Yoo et al., identifying the mitochondrial glutamine importer as a variant of SLC1A5.
Keywords: alternative promoter; glutamine; hypoxia; metabolism; mitochondria; transporter.
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