This spatial configuration of the polypeptide chain is the secondary structure. 肽鏈的這個空間構象就是二級結構。
The changes of intermolecular forces and secondary structure of the rice protein modified by deamidation with acid were studied. 大米蛋白經酸法脫醯胺改性引起分子間作用力和二級結構發生變化。