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Copper Ion Transport
- Molecular classification
- Transporter, P-type ATPase, Metallo-chaperone
01
Overview
Copper ion transport refers to the directed movement of copper (Cu) ions into, out of, or within a cell, or between cells. This process is mediated by specific transporter proteins or pores that ensure copper is delivered where needed for essential biological functions while preventing toxic accumulation. Key proteins include CTR1 (SLC31A1) for import, CTR2 (SLC31A2) for distribution, ATP7A and ATP7B for export, and metallo-chaperones like ATOX1, CCS, and COX17 for intracellular trafficking. Dysregulation of these transporters leads to disorders such as Menkes disease (ATP7A defect) and Wilson disease (ATP7B defect).
02
Biological functions
Metal ion transportCofactor deliveryRedox homeostasisAntioxidant defenseMitochondrial respiration
03
Disease associations
Menkes diseaseWilson diseaseCopper deficiencyCopper toxicity
04
Safety considerations
Disruption of copper homeostasis leading to toxicityPotential for off-target effects on other metal ion transport systems
05
Biomarkers
CTR1 expressionATP7A expressionATP7B expressionCellular copper levels
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