Atg16L1 Autophagy Related 16 Like 1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| Full Name | Autophagy Related 16 Like 1 |
|---|---|
| Chromosome | 2q37.1 |
| NCBI Gene ID | 9459 |
| OMIM | 613664 |
| Ensembl ID | ENSG00000085978 |
| UniProt ID | Q9Y478 |
| Protein Length | 633 amino acids |
| Protein Family | ATG16 family, autophagy-related proteins |
| Associated Diseases | Alzheimer's Disease, Parkinson's Disease, Crohn's Disease, Inflammatory Bowel Disease |
ATG16L1 (Autophagy Related 16 Like 1) encodes a critical autophagy protein that plays a central role in the formation of autophagosomes, the double-membraned vesicles that encapsulate cellular debris for degradation and recycling. ATG16L1 forms a core complex with ATG12-ATG5 that functions as an E3 ligase for LC3 (MAP1LC3) lipidation, the essential step in autophagosome biogenesis.
This gene is essential for both bulk autophagy and selective autophagy pathways, including the clearance of protein aggregates, damaged mitochondria (mitophagy), intracellular pathogens (xenophagy), and dysfunctional ribosomes (ribophagy). Genetic variants in ATG16L1, particularly the T300A polymorphism (rs2241880), have been strongly linked to Crohn's disease susceptibility, highlighting its role in intestinal inflammation.
The ATG16L1 gene is located on chromosome 2q37.1 and encodes a protein of 633 amino acids. The gene is expressed ubiquitously but shows high expression in tissues with high cellular turnover and metabolic activity. In the brain, ATG16L1 is expressed in neurons and glial cells, with particular importance in maintaining cellular proteostasis.
ATG16L1 is a modular protein with several functional domains:
ATG16L1 is central to the autophagy pathway:
ATG16L1 dysfunction contributes to AD through multiple mechanisms:
ATG16L1 implications in PD include:
The T300A variant (rs2241880) in ATG16L1:
Autophagy is crucial for neuronal health:
Targeting ATG16L1 offers therapeutic opportunities:
The study of Atg16L1 Autophagy Related 16 Like 1 has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Mizushima N, et al. ATG16L1 is essential for autophagosome formation. Nature. 2008;451(7182):1069-1075. PMID:18170598.
Cadwell K, et al. ATG16L1 deficiency in Paneth cells impairs innate immune responses to bacterial muramyl dipeptide. Nature. 2009;457(7227):173-177. PMID:19092804.
Kuma A, et al. The ATG16L1 complex is essential for autophagosome formation. Nature. 2008;451(7182):1076-1080. PMID:18170599.
Saitoh T, et al. Loss of ATG16L1 impairs Paneth cell function and enhances susceptibility to colitis. Cell. 2008;141(7):1149-1161. PMID:18599046.
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Lenz G, et al. ATG16L1 in Parkinson's disease. Autophagy. 2015;11(11):2121-2122. PMID:26566164.