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Genes regulating copper metabolism
E D Harris1, Y Qian, M C Reddy
1Department of Biochemistry and Biophysics, Texas A&M University, College Station 77843-2128, USA.
Molecular and Cellular Biochemistry
|November 21, 1998
Summary
Copper metabolism involves complex transport mechanisms. This review focuses on copper-transporting ATPases (Cu-ATPases), crucial for cellular copper homeostasis and linked to Menkes disease.
Area of Science:
- Biochemistry
- Molecular Biology
- Human Physiology
Background:
- Copper (Cu) metabolism is intricately linked to nutrition and cellular function.
- Complex mechanisms involving transport proteins and ligands facilitate Cu bioavailability, absorption, and enzyme incorporation.
- Understanding Cu transport through blood, cellular uptake, and enzyme integration is ongoing.
Purpose of the Study:
- To review the role of copper-transporting ATPases (Cu-ATPases) in mammalian cells.
- To focus on the Cu-ATPase identified in Menkes disease.
- To explore the existence and function of multiple Cu-ATPase isoforms in copper homeostasis.
Main Methods:
- Analysis of cloned and sequenced genes for Menkes and Wilson diseases.
- Deduction of mammalian Cu-ATPase primary structure from cDNA.
- Review of existing literature on Cu-ATPase tissue and developmental specificity.
Main Results:
- Membrane-bound Cu-ATPases are vital for Cu transport and homeostasis in mammals.
- Mammalian Cu-ATPases exhibit tissue and developmental specificity.
- Multiple forms of Cu-ATPase exist, suggesting specialized roles.
Conclusions:
- Cu-ATPases are essential for transmembrane copper transport and maintaining intracellular copper balance.
- The study of Cu-ATPases, particularly those linked to Menkes disease, offers insights into copper physiology.
- Different isoforms of Cu-ATPase likely play distinct roles in normal copper metabolism.