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FEBS Lett. 2010 Apr 2;584(7):1367-73. doi: 10.1016/j.febslet.2010.01.019. Epub 2010 Jan 17.

Molecular mechanism and physiological role of pexophagy.

Author information

1
Division of Biological Sciences, University of California, San Diego, La Jolla, CA 92093-0322, USA.

Abstract

Pexophagy is a selective autophagy process wherein damaged and/or superfluous peroxisomes undergo vacuolar degradation. In methylotropic yeasts, where pexophagy has been studied most extensively, this process occurs by either micro- or macropexophagy: processes analogous to micro- and macroautophagy. Recent studies have identified specific factors and illustrated mechanisms involved in pexophagy. Although mechanistically pexophagy relies heavily on the core autophagic machinery, the latest findings about the role of auxiliary pexophagy factors have highlighted specialized membrane structures required for micropexophagy, and shown how cargo selectivity is achieved and how cargo size dictates the requirement for these factors during pexophagy. These insights and additional observations in the literature provide a framework for an understanding of the physiological role(s) of pexophagy.

PMID:
20083110
PMCID:
PMC2843806
DOI:
10.1016/j.febslet.2010.01.019
[Indexed for MEDLINE]
Free PMC Article

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