e <span  title="" class="an ">&ensp;</span>Because <span  title="" class="an ">&ensp;</span><span  title="ProteinName" class="an ProteinName">Mg</span><span  title="" class="an ">&ensp;</span>ions <span  title="" class="an ">&ensp;</span>interact <span  title="" class="an ">&ensp;</span>with <span  title="" class="an ">&ensp;</span><span  title="ProteinName, CAP" class="an ProteinName CAP">ATP</span><span  title="" class="an ">&ensp;</span>ions <span  title="" class="an ">&ensp;</span>to <span  title="" cla