PP2A promotes ESCRT-0 complex formation on vacuolar membranes and microautophagy induction after TORC1 inactivation.
[No authors listed]
摘要
Deformation of vacuolar membranes mediated by endosomal sorting complex required for transport (ESCRT) is necessary for microautophagy. Target of rapamycin complex 1 (TORC1) protein kinase negatively regulates ESCRT-0 (Vps27-Hse1) recruitment onto vacuolar membranes and microautophagy induction. However, whether and how protein phosphatase regulates these events is unknown. Here, we show that the TORC1-downstream protein phosphatase PP2A-Cdc55 is important for these events after TORC1 inactivation in budding yeast. Loss of PP2A-Cdc55 compromised vacuolar localization of Hse1, but not Vps27. This study revealed that the orchestrated action of PP2A induces microautophagy upon TORC1 inactivation.
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基因功能
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原始数据
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文献解读
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