期刊
TRENDS IN CELL BIOLOGY
卷 29, 期 7, 页码 534-548出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tcb.2019.03.007
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资金
- Deutsche Forschungsgemeinschaft [BE 4679/2-2, PF 202/9-1]
- Research Training Group [278002225/RTG 2202]
- Excellence Strategy of Germany [EXC-2189, 390939984]
Mitochondrial biogenesis requires the import of a large number of precursor proteins from the cytosol. Although specific membrane-bound preprotein translocases have been characterized in detail, it was assumed that protein transfer from the cytosol to mitochondria mainly involved unselective binding to molecular chaperones. Recent findings suggest an unexpected versatility of protein transfer to mitochondria. Cytosolic factors have been identified that bind to selected subsets of preproteins and guide them to mitochondrial receptors in a post-translational manner. Cotranslational import processes are emerging. Mechanisms for crosstalk between protein targeting to mitochondria and other cell organelles, in particular the endoplasmic reticulum (ER) and peroxisomes, have been uncovered. We discuss how a network of cytosolic machineries and targeting pathways promote and regulate preprotein transfer into mitochondria.
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