Menkes and Wilson diseases are related to copper homeostasis. This study looks at the Drosophila ortholog of the human genes associated with Menkes and Wilson diseases, Drosophila ATP7.
Sellami A, Wegener C, Veenstra JA. Functional significance of the copper transporter ATP7 in peptidergic neurons and endocrine cells in Drosophila melanogaster. FEBS Lett. 2012 Aug 16. PubMed PMID: 22981378.