Selective degradation of peroxisomes in yeasts
- PMID: 12740822
- DOI: 10.1002/jemt.10325
Selective degradation of peroxisomes in yeasts
Abstract
In the last two decades, much progress has been made in understanding the process of induction and biogenesis of peroxisomes, essential organelles in all eukaryotes. Only relatively recently, the first molecular studies on the selective degradation of this important organelle-a process known as pexophagy, which occurs when the organelles have become redundant-have been performed, especially using methylotrophic yeasts. The finding that pexophagy and other transport pathways to the vacuole (vacuolar protein sorting, autophagy, cytoplasm-to-vacuole-targeting and endocytosis) utilize common but also unique genes has placed pexophagy in the heart of the machinery that recycles cellular material. The quest is now on to understand how peroxisome degradation has become such a highly selective process and what the signals are that trigger it. In addition, because the prime determinant of pexophagy is located on the peroxisome itself, it has become essential to study the role of peroxisomal membrane proteins in the degradation process in detail. This review highlights the main achievements of the last years.
Copyright 2003 Wiley-Liss, Inc.
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