a Department of Molecular and Cell Biology , University of California , Berkeley , CA , USA.
b California Institute for Quantitative Biosciences , University of California , Berkeley , CA , USA.
Autophagy. 2019 Jun;15(6):1122-1123. doi: 10.1080/15548627.2019.1596501. Epub 2019 Mar 30.
Macroautophagy/autophagy is an evolutionarily conserved degradation system with fundamental biological functions. The activation of the class III phosphatidylinositol 3-kinase (PtdIns3K) complexes and the subsequent production of phosphatidylinositol 3-phosphate (PtdIns3P) are pivotal to autophagy. Using a combination of structural biology, biochemistry, and biophysics, we revealed how the non-catalytic subunit BECN1 serves as a membrane-binding switch in the regulation of PtdIns3K complexes and autophagy.
自噬是一种进化上保守的降解系统,具有基本的生物学功能。III 类磷酸肌醇 3-激酶(PtdIns3K)复合物的激活以及随后的磷酸肌醇 3-磷酸(PtdIns3P)的产生对于自噬至关重要。我们利用结构生物学、生物化学和生物物理学的结合,揭示了非催化亚基 BECN1 如何在 PtdIns3K 复合物和自噬的调节中作为膜结合开关发挥作用。