metalloprotein
... that the presence of the metal ion in metalloprotein enzymes allows them to perform functions, such as catalyzing redox reactions, that other polypeptide enzymes cannot achieve?
... that the presence of the <a href="./Metal" id="mwFMY" rel="mw:WikiLink" title="Metal">metal</a> <a href="./Ion" id="mwFMc" rel="mw:WikiLink" title="Ion">ion</a> in <b id="mwFMg"><a href="./Metalloprotein" id="mwFMk" rel="mw:WikiLink" title="Metalloprotein">metalloprotein</a></b> <a href="./Enzyme" id="mwFMo" rel="mw:WikiLink" title="Enzyme">enzymes</a> allows them to perform functions, such as <a href="./Catalysis" id="mwFMs" rel="mw:WikiLink" title="Catalysis">catalyzing</a> <a href="./Redox" id="mwFMw" rel="mw:WikiLink" title="Redox">redox</a> reactions, that other <a href="./Peptide" id="mwFM0" rel="mw:WikiLink" title="Peptide">polypeptide</a> enzymes cannot achieve?