Protein carrier for copper important iniron homeostasis

cytochrome oxidase

Explanation:

Copper may help participate in Heme synthesis by action through cytochrome oxidase. Reutilization of iron by the spleen reticuloendothelial cells is subjected to inhibition by the excess copper.

Basically copper helps in intrcytoplasmic transport of iron and helps maintain the iron gradient by heme synthesis . Any alteration In iron concentration I.e

1. Decrease in iron levels indicates very high copper levels

2.Increase in iron levels indicates deficiency of copper.

not sure if this what   you'r looking for would be percent composition