The combination of leucine， oxidation， and gluconeogenesis， which is using amino acid carbon to make glucose， results in a decrease protein mass.

所有因素，包括亮氨酸，氧化和糖异生增加导致质减少。

In this paper,the geometries of leucine,its thermolytic intermediate and final products are optimized by AM1 method,respectively.The parameters of the total energy and bond order etc are obtained.

用AM1方法全优化计算了亮氨酸及其热分解中间产物、产物分子的几何构型，得到其总能量、键级等数据。