GPXs prevent the organism from damage of free radicals by scavenging hydrogen peroxide and lipid hydroperoxide, and maintain the normally physiological functions of the cells and tissues.

• 科学家投入相当大的精力研究GPX的结构与功能关系，设计合成了大量的GPX模拟物，并研究了这些模拟物的生物学效应。