The sub-family of the P-type ATPases superfamily, P 1B -ATPases, comprises primary metal transporters using ATP as the source of energy. According to their function, they contain the specific structural motifs (Cys-Pro-Cys/His/Ser motif) and His rich domains, that may participate in metal binding and transport across the membranes. Higher plants possess more P 1B -ATPases then do other organisms and these are located in different cell membranes and tissues having a variety of tasks.