Journal
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
Volume 1777, Issue 7-8, Pages 965-972Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.bbabio.2008.04.031
Keywords
glutamate; mitochondria; glutamate dehydrogenase; glutamate carrier; pancreatic beta-cell; SIRT
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Glutamate is implicated in numerous metabolic and signalling functions that vary according to specific tissues. Glutamate metabolism is tightly controlled by activities of mitochondrial enzymes and transmembrane carriers, in particular glutamate dehydrogenase and mitochondrial glutamate carriers that have been identified in recent years. It is remarkable that, although glutamate-specific enzymes and transporters share similar properties in most tissues, their regulation varies greatly according to particular organs in order to achieve tissue specific functions. This is illustrated in this review when comparing glutamate handling in liver, brain, and pancreatic beta-cells. We describe the main cellular glutamate pathways and their specific functions in different tissues, ultimately contributing to the control of metabolic homeostasis at the organism level. (C) 2008 Elsevier B.V. All rights reserved.
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