Atg101 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| ATG101 - Autophagy Related 1 | |
|---|---|
| Gene Symbol | ATG101 |
| Chromosomal Location | 14q24.2 |
| NCBI Gene ID | 84888 |
| OMIM | 618328 |
| Ensembl ID | ENSG00000160072 |
| UniProt ID | Q9Y4P1 |
| Associated Diseases | Alzheimer's Disease, Parkinson's Disease, Cancer |
The ATG101 gene (Autophagy Related 1) encodes an essential component of the ULK1 complex, which initiates the autophagy process. ATG101 is a 271-amino acid protein that plays a critical role in regulating autophagy—the cellular degradation pathway responsible for clearing damaged organelles, misfolded proteins, and intracellular pathogens. Autophagy is particularly important in neurons, which are post-mitotic cells that cannot dilute harmful protein aggregates through cell division.
ATG101 is a relatively late addition to the autophagy machinery, discovered as a component of the ULK1 (UNC-51 Like Kinase 1) complex. The gene is located on chromosome 14q24.2 and encodes a protein that contains no known enzymatic domains but functions as a scaffolding protein that bridges multiple components of the autophagy initiation machinery.
The ULK1 complex consists of:
ATG101 binds directly to the ULK1 kinase domain and to ATG13, stabilizing the entire complex and facilitating autophagosome formation.
ATG101 functions as a critical scaffold within the ULK1 complex:
In neurons, ATG101-mediated autophagy is essential for:
In Alzheimer's disease (AD), autophagic flux is impaired, leading to accumulation of autophagosomes and reduced clearance of amyloid-beta and tau aggregates. ATG101 dysregulation contributes to this impairment:
Parkinson's disease (PD) involves accumulation of alpha-synuclein in Lewy bodies. Autophagy, particularly mitophagy, is critical for clearing damaged mitochondria in dopaminergic neurons:
Beyond neurodegeneration, ATG101 has context-dependent roles in cancer:
ATG101 represents a potential therapeutic target: