Sequence analysis and alignment showed significant homologies with the correlated parasite cysteine proteinases, and the Cys, His and Asn residues that formed catalytic triad were of high conservation.

• 氨基酸序列的同源性分析显示 ,该序列与相关虫种半胱氨酸蛋白酶存在着很高的同源性 ,组成半胱氨酸催化三联体的半胱氨酸、组胺酸和天冬酰胺残基高度保守。