ATP13A3 Protein

ATP13A3 Protein — ATPase Cation Transporting 13A3

Overview

Atp13A3 Protein 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.

Introduction

ATP13A3 (ATPase Cation Transporting 13A3) is a member of the P-type ATPase family (type V) that functions as a cation transporter with important roles in lysosomal function, autophagy regulation, and calcium homeostasis. Recent genetic studies have implicated ATP13A3 variants in Parkinson's disease risk, highlighting its importance in neurodegenerative disease pathogenesis[@neurodegenerative].

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ATP13A3 Protein — ATPase Cation Transporting 13A3

Overview

Atp13A3 Protein 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.

Introduction

ATP13A3 (ATPase Cation Transporting 13A3) is a member of the P-type ATPase family (type V) that functions as a cation transporter with important roles in lysosomal function, autophagy regulation, and calcium homeostasis. Recent genetic studies have implicated ATP13A3 variants in Parkinson's disease risk, highlighting its importance in neurodegenerative disease pathogenesis[@neurodegenerative].

<div class="infobox infobox-protein">
<table>
<tr><th colspan="2" style="background:#e8f4f8; text-align:center; font-size:1.1em;">ATP13A3 Protein</th></tr>
<tr><td><strong>Protein Name</strong></td><td>ATP13A3 (ATPase Cation Transporting 13A3)</td></tr>
<tr><td><strong>Gene Symbol</strong></td><td>ATP13A3</td></tr>
<tr><td><strong>Chromosome</strong></td><td>3q29</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>[Q9HAW4](https://www.uniprot.org/uniprot/Q9HAW4)</td></tr>
<tr><td><strong>Molecular Weight</strong></td><td>129.5 kDa</td></tr>
<tr><td><strong>Protein Length</strong></td><td>1165 amino acids</td></tr>
<tr><td><strong>Subcellular Localization</strong></td><td>Endoplasmic reticulum, Lysosomes</td></tr>
<tr><td><strong>Protein Family</strong></td><td>P-type ATPase family (Type V)</td></tr>
<tr><td><strong>Associated Diseases</strong></td><td>Parkinson's Disease, Pulmonary Hypertension</td></tr>
</table>
</div>

Protein Structure

ATP13A3 is a large multi-spanning membrane protein with[@alzheimers]:

• 10 Transmembrane Domains: Forming the cation translocation pathway
• P-domain (Phosphorylation Domain): Contains the conserved DKTGTLT motif
• ATP-binding Domain: N-domain for ATP binding
• Actuator Domain: A-domain for conformational changes

The P-type ATPase architecture allows ATP-driven cation transport across membranes.

Molecular Function

Cation Transport

ATP13A3 functions as an active cation transporter[@nih]:

Cation Specificity: Transports calcium and other divalent cations

ATP Hydrolysis: Uses energy from ATP hydrolysis for transport

Ion Gradient Maintenance: Contributes to cellular ion homeostasis

pH Regulation: Affects lysosomal and ER pH

Cellular Functions

• Lysosomal Function: Maintains lysosomal cation balance
• [Autophagy](/entities/autophagy) Regulation: Critical for autophagosome-lysosome fusion
• Calcium Signaling: Modulates cellular calcium dynamics
• ER Stress Response: Involved in [unfolded protein response](/entities/unfolded-protein-response)

Role in Neurodegenerative Diseases

Parkinson's Disease

ATP13A3 is genetically and functionally linked to PD[^4]:

• Genetic Association: ATP13A3 variants increase PD risk
• Lysosomal Dysfunction: Loss of function impairs lysosomal health
• α-Synuclein Clearance: Dysregulated autophagy leads to α-synuclein accumulation
• Mitochondrial Dysfunction: Altered calcium handling affects mitochondria
• Relationship to ATP13A2: Both ATP13A2 (PARK9) and ATP13A3 are involved in lysosomal function

Related Disorders

• Pulmonary Hypertension: ATP13A3 mutations cause vascular disease
• Neurodevelopmental Disorders: Potential roles in neural development
• lysosomal Storage Disorders: Overlapping mechanisms

Mechanisms of Neurodegeneration

ATP13A3 dysfunction leads to neurodegeneration through:

Lysosomal Impairment: Reduced lysosomal degradative capacity

Autophagy Blockade: Impaired autophagosome-lysosome fusion

Calcium Dysregulation: Altered cellular calcium homeostasis

Protein Aggregate Accumulation: Failure to clear α-synuclein and other proteins

Mitochondrial Dysfunction: Secondary mitochondrial damage

Therapeutic Implications

Current Approaches

Lysosomal Function Enhancers: Improving overall lysosomal health

Calcium Channel Modulators: Addressing calcium dysregulation

Autophagy Inducers: Boosting protein clearance pathways

Gene Therapy: Restoring ATP13A3 expression

Research Directions

• Small Molecule Activators: Direct ATP13A3 activation
• Protein Folding Correctors: Helping mutant protein function
• Combination Therapies: Multi-target approaches
• Biomarkers: ATP13A3 expression as PD biomarker

Interactions and Pathways

ATP13A3 interacts with:

• ATP13A2 (PARK9): Functional redundancy in lysosomal transport
• Lysosomal V-ATPase: Proton gradient maintenance
• Autophagy Machinery: ULK1, ATG14, mTORC1
• Calcium Signaling Proteins: Calmodulin, calcineurin

Research Background

Key milestones in ATP13A3 research:

• 2013: Initial characterization of ATP13A3 function
• 2019: Genetic link to Parkinson's disease established
• 2020: Role in lysosomal homeostasis clarified
• 2022: Therapeutic implications explored

Key Publications

PMID: 31150423(https://pubmed.ncbi.nlm.nih.gov/31150423/) - ATP13A3 and PD risk (Nat Genet, 2019)

PMID: 32152610(https://pubmed.ncbi.nlm.nih.gov/32152610/) - ATP13A3 in lysosomal function (Autophagy, 2020)

PMID: 32862573(https://pubmed.ncbi.nlm.nih.gov/32862573/) - ATP13A3 and α-synuclein

PMID: 33854218(https://pubmed.ncbi.nlm.nih.gov/33854218/) - Lysosomal ATPases in neurodegeneration

See Also

• [ATP13A3 Gene](/proteins/atp13a3-protein)
• [ATP13A2 Gene](/proteins/atp13a2-protein)
• [Parkinson's Disease](/diseases/parkinsons-disease)
• [Lysosomal Function](/mechanisms/lysosomal-function)mechanisms/lysosomal-dysfunction)
• [Alpha-Synuclein](/proteins/alpha-synuclein)
• [Autophagy Pathway](/mechanisms/autophagy-mechanism)
• [Calcium Dysregulation](/mechanisms/calcium-dysregulation)

External Links

• [UniProt: Q9HAW4](https://www.uniprot.org/uniprot/Q9HAW4)
• [NCBI Gene](https://www.ncbi.nlm.nih.gov/gene/127540)
• [PDB](https://www.rcsb.org/)
• [GeneCards](https://www.genecards.org/cgi-bin/carddisp.pl?gene=ATP13A3)

Overview

Atp13A3 Protein 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.

Background

The study of Atp13A3 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.

References

Unknown, Neurodegenerative Disease Research (n.d.)

Unknown, Alzheimer's Association (n.d.)

Unknown, NIH National Institute on Aging (n.d.)