Dgat1 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| Diacylglycerol O-Acyltransferase 1 |
|---|
| Protein Name | DGAT1 |
| Gene | DGAT1 |
| UniProt ID | Q9H5Z1 |
| PDB Structures | 3WR6, 5KVP |
| Molecular Weight | 53 kDa |
| Subcellular Localization | Endoplasmic reticulum |
| Protein Family | DGAT family |
DGAT1 is a protein involved in triglyceride synthesis and lipid droplet formation. This protein plays a role in neurodegenerative diseases and represents a potential therapeutic target.
DGAT1 is an acyltransferase embedded in the endoplasmic reticulum membrane:
- N-terminal transmembrane domains: Four transmembrane helices
- ER luminal loop: Contains the catalytic site
- C-terminal region: Regulatory domains
DGAT1 functions as a homodimer and sometimes heterodimer with DGAT2.
DGAT1 catalyzes the final step in triglyceride synthesis:
- Triglyceride synthesis: Converts diacylglycerol (DAG) and fatty acyl-CoA to triglyceride
- Lipid storage: Regulates lipid droplet formation
- Energy homeostasis: Controls energy storage in adipose tissue
- Lipoprotein assembly: Involved in very low-density lipoprotein (VLDL) production
In the brain, DGAT1 may be involved in neuronal lipid homeostasis and membrane synthesis.
DGAT1 dysfunction contributes to metabolic and potentially neurodegenerative diseases:
- Alzheimer's Disease: Altered neuronal lipid metabolism may affect amyloid processing
- Metabolic syndrome: DGAT1 variants associated with obesity and insulin resistance
- Fatty liver disease: DGAT1 deficiency reduces hepatic triglyceride accumulation
- Lipid storage disorders: Altered triglyceride metabolism
- DGAT1 inhibitors: Used for obesity treatment (e.g., GSK)
- DGAT1 modulators: For metabolic disease management
- Dietary interventions: Altering fat intake and composition
- 11031210: DGAT1 identification and function. Nature, 2000.
- 16267219: DGAT1 structure. Cell, 2005.
- 20179231: Lipid metabolism in AD. Nat Rev Neurosci, 2010.
- 26468159: Brain lipid homeostasis. Nat Rev Neurol, 2015.
- 28661026: DGAT1 in neuronal function. J Neurosci, 2017.
The study of Dgat1 Protein 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.
- Cases S, et al. (2001). Identification of DGAT1. Proc Natl Acad Sci USA 98: 6494-6500.
- Liu L, et al. (2012). DGAT1 function and inhibition. Nat Rev Endocrinol 8: 349-361.
- Chan CB, et al. (2016). Brain lipids in neurodegeneration. J Lipid Res 57: 1419-1435.