“…There is evidence that Cd II can substitute for Mn II in other enzymes, such as photosystem II [41] and Mn‐dependent protein serine phosphatase [42]. Furthermore, Mn II and Cd II can replace other hard metals, such as Mg II , in the binuclear metal‐binding site of d ‐xylose isomerase [43] and Ca II in peanut peroxidase [44], phospholipase A [45,46], and Ca II ‐dependent endonuclease [47]. Finally, there is evidence that Cd II can effectively compete with Mn II in Mn II ‐specific transport systems [48–50].…”