HMA4 (Heavy metal ATPase 4); cadmium-transporting ATPase. Identical to Putative cadmium/zinc-transporting ATPase 2 (HMA4) [Arabidopsis Thaliana] (GB:O64474); similar to HMA3 (Heavy metal ATPase 3), ATPase, coupled to transmembrane movement of ions, phosphorylative mechanism [Arabidopsis thaliana] (TAIR:AT4G30120.1); similar to HMA2 (Heavy metal ATPase 2), cadmium-transporting ATPase [Arabidopsis thaliana] (TAIR:AT4G30110.1); similar to P1B-type ATPase 4 [Arabidopsis halleri] (GB:ABB29495.1); similar to P1B-type ATPase 4 [Arabidopsis halleri subsp. gemmifera] (GB:AAY29151.1); similar to putative heavy metal transporting P-type ATPase [Thlaspi