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2015 ; 33
(ä): 74-81
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The mitochondrial unfolded protein response?synchronizing genomes
#MMPMID25543897
Jovaisaite V
; Auwerx J
Curr Opin Cell Biol
2015[Apr]; 33
(ä): 74-81
PMID25543897
show ga
Maintenance of the mitochondrial proteome is performed primarily by chaperones,
which fold and assemble proteins, and by proteases, which degrade excess damaged
proteins. Upon various types of mitochondrial stress, triggered genetically or
pharmacologically, dysfunction of the proteome is sensed and communicated to the
nucleus, where an extensive transcriptional program, aimed to repair the damage,
is activated. This feedback loop, termed the mitochondrial unfolded protein
response (UPR(mt)), synchronizes the activity of the mitochondrial and nuclear
genomes and as such ensures the quality of the mitochondrial proteome. Here we
review the recent advances in the UPR(mt) field and discuss its induction,
signaling, communication with the other mitochondrial and major cellular
regulatory pathways, as well as its potential implications on health and
lifespan.