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2015 ; 11
(12
): 2377-8
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Reticulophagy and nucleophagy: New findings and unsolved issues
#MMPMID26566146
Nakatogawa H
; Mochida K
Autophagy
2015[]; 11
(12
): 2377-8
PMID26566146
show ga
Autophagy targets various intracellular components ranging from proteins and
nucleic acids to organelles for their degradation in lysosomes or vacuoles. In
selective types of autophagy, receptor proteins play central roles in target
selection. These proteins bind or localize to specific targets, and also interact
with Atg8 family proteins on forming autophagosomal membranes, leading to the
efficient sequestration of the targets by the membranes. Our recent study
revealed that yeast cells actively degrade the endoplasmic reticulum (ER) and
even part of the nucleus via selective autophagy under nitrogen-deprived
conditions. We identified novel receptors, Atg39 and Atg40, specific to these
pathways. Here, we summarize our findings on 'reticulophagy' (or 'ER-phagy') and
'nucleophagy', and discuss key issues that remain to be solved in future studies.