Bertini I, Rosato A
Magnetic Resonance Center (CERM), University of Florence, Via L.Sacconi 6, 50019, Sesto Fiorentino, Italy.
Cell Mol Life Sci. 2008 Jan;65(1):89-91. doi: 10.1007/s00018-007-7439-6.
Menkes disease is caused by mutations in the copper-transporting P(1B)-type ATPase ATP7A. ATP7A has a dual function: it serves to incorporate copper into copper-dependent enzymes, and it maintains intracellular copper levels by removing excess copper from the cytosol. To accomplish both functions, the protein traffics between different cellular locations depending on copper levels. The mechanism for sensing the concentration of copper, for trafficking, as well as the details of the mechanism of copper translocation across the membrane are unknown.
门克斯病由铜转运P(1B)型ATP酶ATP7A的突变引起。ATP7A具有双重功能:它将铜整合到依赖铜的酶中,并通过从细胞质中去除过量的铜来维持细胞内铜水平。为了完成这两种功能,该蛋白质会根据铜水平在不同的细胞位置之间运输。目前尚不清楚感知铜浓度、运输的机制以及铜跨膜转运机制的细节。