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Edward Mallinckrodt Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri 63110
Copper is an essential
transition metal that permits the facile transfer of electrons in a
series of critical biochemical pathways. Menkes disease and Wilson's
disease are inherited disorders of copper metabolism resulting from the
absence or dysfunction of homologous copper-transporting ATPases that
reside in the trans-Golgi network of all cells. Despite striking
differences in the clinical presentation of these two diseases, the
respective ATPases function in precisely the same manner within the
cell and the unique clinical features of each disease are entirely the
result of the tissue-specific expression of each protein. Elucidation
of the basic defect in these rare genetic disorders has provided a
valuable heuristic paradigm for understanding the mechanisms of
cellular copper homeostasis.
Wilson's disease; Menkes disease; adenosine triphosphatase
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