FEATURES

FAMILY

DESCRIPTION

Also known as VPS15_YEAST, VPS15, GRD8, VAC4, VPL19. Serine/threonine-protein kinase required for cytoplasm to vacuole transport (Cvt) and autophagy as a part of the autophagy-specific VPS34 PI3-kinase complex I. This complex is essential to recruit the ATG8-phosphatidylinositol conjugate and the ATG12-ATG5 conjugate to the pre-autophagosomal structure. Is also involved in endosome-to-Golgi retrograde transport as part of the VPS34 PI3-kinase complex II. This second complex is required for the endosome-to-Golgi retrieval of PEP1 and KEX2, and the recruitment of VPS5 and VPS7, two components of the retromer complex, to endosomal membranes (probably through the synthesis of a specific pool of phosphatidylinositol 3-phosphate recruiting the retromer to the endosomes). By regulating VPS34 kinase activity, VPS15 appears to be essential for the efficient delivery of soluble hydrolases to the yeast vacuole. Component of the autophagy-specific VPS34 PI3-kinase complex I composed of VPS15, VPS30, VPS34, ATG14 and ATG38; and of the VPS34 PI3-kinase complex II composed of VPS15, VPS30, VPS34 and VPS38.

EXTERNAL LINKS

VPS15

Serine/threonine-protein kinase VPS15

VPS15

Molecular Synopsis