Journal
FREE RADICAL BIOLOGY AND MEDICINE
Volume 38, Issue 10, Pages 1267-1277Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.freeradbiomed.2005.02.006
Keywords
signaling; mitochondria; tyrosine phosphorylation; tyrosine kinase; tyrosine phosphatase; adaptor protein; free radicals
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Mitochondria are multifunctional organelles that participate in a range of cellular processes such as energy production, proliferation, death, and senescence. The involvement of mitochondria in such distinct aspects of cell life requires the existence of an integrated system of signals that enter and exit the organelle according to the diverse needs of the cell. The recent discovery of several protein kinases and phosphatases that localize partially or predominantly inside mitochondria opens new perspectives into the regulation of these signals. This review focuses on tyrosine phosphorylation in mitochondria. A description of the protein tyrosine kinases and phosphatases which regulate this process along with the mitochondrial tyrosine-phosphorylated proteins identified to date is followed by a discussion of the possible involvement of tyrosine phosphorylation in mitochondrial signaling and future perspectives for developments in this emerging field. (c) 2005 Elsevier Inc. All rights reserved.
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