sp;</span>function <span  title="" class="an ">&ensp;</span>mutations <span  title="" class="an ">&ensp;</span>result <span  title="" class="an ">&ensp;</span>in <span  title="" class="an ">&ensp;</span>intracellular <span  title="" class="an ">&ensp;</span>accumulation <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span><span  title="CAP" class="an CAP">CNG</span><span  title="" class="an ">&ensp;</span>channel <span  title="" class="an ">&ensp;</span>subunits <span  title=