Reference: Stasyk OV, et al. (1999) A Pichia pastoris VPS15 homologue is required in selective peroxisome autophagy. Curr Genet 36(5):262-9

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Abstract

Methylotrophic yeasts contain large peroxisomes during growth on methanol. Upon exposure to excess glucose or ethanol these organelles are selectively degraded by autophagy. Here we describe the cloning of a Pichia pastoris gene (PpVPS15) involved in peroxisome degradation, which is homologous to Saccharomyces cerevisiae VPS15. In methanol-grown cells of a P. pastoris VPS15 deletion strain, the levels of peroxisomal marker enzymes remained high after addition of excess glucose or ethanol. Electron microscopic studies revealed that the organelles were not taken up by vacuoles, suggesting that PpVPS15 is required at an early stage in peroxisome degradation.

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Journal Article | Research Support, Non-U.S. Gov't | Research Support, U.S. Gov't, P.H.S. | Comparative Study
Authors
Stasyk OV, van der Klei IJ, Bellu AR, Shen S, Kiel JA, Cregg JM, Veenhuis M
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