&ensp;</span>of <span  title="" class="an ">&ensp;</span><span  title="ProteinName" class="an ProteinName">Ca</span><span  title="" class="an ">&ensp;</span>channels <span  title="" class="an ">&ensp;</span>by <span  title="" class="an ">&ensp;</span>intracellular <span  title="" class="an ">&ensp;</span><span  title="ProteinName, CAP" class="an ProteinName CAP">ATP</span><span  title="" class="an ">&ensp;</span>in <span  title="" class="an ">&ensp;</span>frog <span  title="" class="an ">&ensp;</span><span 