Dao Protein (D Amino Acid Oxidase) plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Dao Protein (D Amino Acid Oxidase) is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
:: infobox .infobox-protein
| DAO Protein (D-Amino Acid Oxidase) | |
|---|---|
| Gene | DAO |
| UniProt | P14920 |
| Molecular Weight | ~39 kDa |
| Subcellular Localization | Peroxisomes |
| Protein Family | D-amino acid oxidase family |
| Aliases | DAO, DAAO |
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ATP7A is a copper-transporting P-type ATPase that plays essential roles in copper homeostasis. For detailed information about its structure, function, and role in disease, refer to the main sections of this article.
DAO is a flavin adenine dinucleotide (FAD)-dependent enzyme that catalyzes the oxidative deamination of D-amino acids. The protein consists of approximately 346 amino acids and adopts a typical TIM barrel fold common to flavin-dependent oxidases. The active site contains FAD as a prosthetic group, which is essential for catalytic activity.
D-amino acid oxidase (DAO) is primarily expressed in peroxisomes and catalyzes the oxidative deamination of D-amino acids, converting them to their corresponding keto acids with the production of hydrogen peroxide (H₂O₂). In the nervous system, DAO plays a role in:
Mutations in the DAO gene have been associated with ALS and frontotemporal dementia (FTD). DAO deficiency leads to increased D-serine levels, which may cause NMDA receptor overactivation and excitotoxicity. The enzymatic activity of DAO is crucial for maintaining proper D-serine homeostasis in the brain.
DAO variants have been implicated in schizophrenia susceptibility. Altered DAO activity may contribute to dysregulated D-serine signaling, affecting NMDA receptor function important for cognitive processes.
Defects in DAO function can lead to accumulated D-serine, which may contribute to neurotoxicity through excessive NMDA receptor stimulation.
DAO inhibitors are being investigated as potential therapeutic agents for:
Dao Protein (D Amino Acid Oxidase) plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.