ULK1 Antibody – Rabbit Polyclonal

ULK1: Serine/threonine-protein kinase involved in autophagy in response to starvation. Acts upstream of phosphatidylinositol 3- kinase PIK3C3 to regulate the formation of autophagophores, the precursors of autophagosomes. Part of regulatory feedback loops in autophagy: acts both as a downstream effector and negative regulator of mammalian target of rapamycin complex 1 (mTORC1) via interaction with RPTOR. Activated via phosphorylation by AMPK and also acts as a regulator of AMPK by mediating phosphorylation of AMPK subunits PRKAA1, PRKAB2 and PRKAG1, leading to negatively regulate AMPK activity. May phosphorylate ATG13/KIAA0652 and RPTOR; however such data need additional evidences. Plays a role early in neuronal differentiation and is required for granule cell axon formation. Interacts with GABARAP and GABARAPL2. Interacts (via C- terminus) with ATG13/KIAA0652. Part of a complex consisting of ATG13/KIAA0652, ULK1 and RB1CC1. Associates with the mammalian target of rapamycin complex 1 (mTORC1) through an interaction with RPTOR; the association depends on nutrient conditions and is reduced during starvation. Ubiquitously expressed. Detected in the following adult tissues: skeletal muscle, heart, pancreas, brain, placenta, liver, kidney, and lung. Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. APG1/unc-51/ULK1 subfamily.

Protein type: Protein kinase, Other; EC 2.7.11.1; Protein kinase, Ser/Thr (non-receptor); Kinase, protein; Autophagy; Other group; ULK family

Chromosomal Location of Human Ortholog: 12q24.3

Cellular Component: neuron projection; cytoplasmic vesicle membrane; cell soma; cytoplasm; pre-autophagosomal structure membrane; autophagic vacuole; cytosol

Molecular Function: protein serine/threonine kinase activity; protein binding; protein complex binding; protein kinase binding; ATP binding; Rab GTPase binding

Biological Process: axon extension; protein amino acid autophosphorylation; neurite regeneration; negative regulation of collateral sprouting; cerebellar granule cell differentiation; protein amino acid phosphorylation; radial glia guided migration of granule cell; response to starvation; cellular response to nutrient levels; protein localization; receptor internalization; Ras protein signal transduction; regulation of autophagy; regulation of nerve growth factor receptor signaling pathway; positive regulation of macroautophagy; positive regulation of autophagy; neurite development; autophagic vacuole formation