Zinc/cadmium transporter that plays an essential role in promoting translocation of zinc and cadmium from roots to shoots (PubMed:21388416, PubMed:22123790, PubMed:23575418, PubMed:22548273). May control cadmium loading into xylem (PubMed:21388416). In roots, transports zinc and cadmium from the apoplast to the symplast to facilitate translocation via the phloem. In nodes, functions to load zinc and cadmium to the phloem for the preferential distribution to the upper nodes and panicles (PubMed:23575418). ATP + H2O + Zn(2+)(in) = ADP + H(+) + phosphate + Zn(2+)(out) ATP + Cd(2+)(in) + H2O = ADP + Cd(2+)(out) + H(+) + phosphate In roots, localizes at the pericycle cells. In nodes, localizes in the phloem parenchyma and companion cells of both enlarged and diffuse vascular bundles. Reduced plant height and biomass. Reduced grain yield. Decreased levels of zinc an cadmium in grain, rachis, husk and nodes. Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IB subfamily.