Abstract
ABSTRACT Vac8 is the sole armadillo-repeat (ARM) protein in yeast. The function of Vac8 in the cytoplasm-to-vacuole targeting pathway has been known for a long time but its role in the phagophore assembly site localization and recruitment of autophagy-related protein complexes is slowly coming to light. Because Vac8 is also involved in formation of the nuclear-vacuole junction and vacuole inheritance, the protein needs to be a competent and wide-ranging mediator of cellular processes. In this article, we discuss two recent studies reporting on Vac8 and its binding partners. We describe Vac8 in the context of crystallized protein complexes as well as predicted models to reveal the versatility of Vac8 and its potential to become a subject of future autophagy research. Abbreviation: ARM, armadillo repeat; Cvt, cytoplasm-to-vacuole targeting; IDPR, intrinsically disordered protein region NVJ, nucleus-vacuole junction; SEC, size-exclusion chromatography.
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