Plays an important role in zinc transport and homeostasis. Could also be involved in cadmium detoxification. ATP + H2O + Zn(2+)(in) = ADP + H(+) + phosphate + Zn(2+)(out) ATP + Cd(2+)(in) + H2O = ADP + Cd(2+)(out) + H(+) + phosphate Predominantly expressed in the vascular tissues of roots, stems, and leaves. Also detected in developing anthers. Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IB subfamily.